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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-tiling/pr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:38:29,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:38:29,030 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:38:29,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:38:29,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:38:29,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:38:29,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:38:29,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:38:29,055 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:38:29,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:38:29,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:38:29,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:38:29,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:38:29,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:38:29,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:38:29,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:38:29,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:38:29,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:38:29,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:38:29,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:38:29,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:38:29,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:38:29,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:38:29,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:38:29,079 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:38:29,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:38:29,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:38:29,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:38:29,089 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 [2019-10-15 01:38:29,111 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:38:29,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:38:29,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:38:29,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:38:29,114 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:38:29,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:38:29,115 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:38:29,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:38:29,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:38:29,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:38:29,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:38:29,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:38:29,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:38:29,117 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:38:29,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:38:29,118 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:38:29,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:38:29,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:38:29,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:38:29,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:38:29,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:38:29,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:38:29,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:38:29,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:38:29,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:38:29,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:38:29,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:38:29,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:38:29,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:38:29,385 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:38:29,398 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:38:29,401 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:38:29,402 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:38:29,403 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:38:29,403 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/pr4.c [2019-10-15 01:38:29,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ea735b4/77a6b496b10e497abf074cbb0427a123/FLAG4066c1cf9 [2019-10-15 01:38:29,971 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:38:29,974 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/pr4.c [2019-10-15 01:38:29,981 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ea735b4/77a6b496b10e497abf074cbb0427a123/FLAG4066c1cf9 [2019-10-15 01:38:30,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ea735b4/77a6b496b10e497abf074cbb0427a123 [2019-10-15 01:38:30,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:38:30,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:38:30,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:38:30,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:38:30,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:38:30,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:38:30" (1/1) ... [2019-10-15 01:38:30,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777900ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:30, skipping insertion in model container [2019-10-15 01:38:30,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:38:30" (1/1) ... [2019-10-15 01:38:30,367 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:38:30,386 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:38:30,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:38:30,585 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:38:30,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:38:30,712 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:38:30,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:30 WrapperNode [2019-10-15 01:38:30,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:38:30,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:38:30,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:38:30,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:38:30,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:30" (1/1) ... [2019-10-15 01:38:30,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:30" (1/1) ... [2019-10-15 01:38:30,731 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:30" (1/1) ... [2019-10-15 01:38:30,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:30" (1/1) ... [2019-10-15 01:38:30,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:30" (1/1) ... [2019-10-15 01:38:30,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:30" (1/1) ... [2019-10-15 01:38:30,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:30" (1/1) ... [2019-10-15 01:38:30,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:38:30,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:38:30,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:38:30,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:38:30,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:30" (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 [2019-10-15 01:38:30,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:38:30,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:38:30,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:38:30,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:38:30,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:38:30,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:38:30,826 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:38:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:38:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:38:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:38:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:38:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:38:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:38:30,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:38:30,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:38:31,342 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:38:31,342 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 01:38:31,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:38:31 BoogieIcfgContainer [2019-10-15 01:38:31,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:38:31,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:38:31,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:38:31,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:38:31,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:38:30" (1/3) ... [2019-10-15 01:38:31,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45117737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:38:31, skipping insertion in model container [2019-10-15 01:38:31,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:38:30" (2/3) ... [2019-10-15 01:38:31,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45117737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:38:31, skipping insertion in model container [2019-10-15 01:38:31,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:38:31" (3/3) ... [2019-10-15 01:38:31,352 INFO L109 eAbstractionObserver]: Analyzing ICFG pr4.c [2019-10-15 01:38:31,361 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:38:31,367 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:38:31,378 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:38:31,398 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:38:31,399 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:38:31,399 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:38:31,399 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:38:31,399 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:38:31,399 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:38:31,399 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:38:31,399 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:38:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-15 01:38:31,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:38:31,421 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:38:31,422 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:38:31,424 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:38:31,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:38:31,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1208735159, now seen corresponding path program 1 times [2019-10-15 01:38:31,436 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:38:31,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826118486] [2019-10-15 01:38:31,437 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:38:31,437 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:38:31,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:38:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:38:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:38:31,801 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826118486] [2019-10-15 01:38:31,802 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:38:31,802 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:38:31,802 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050024909] [2019-10-15 01:38:31,807 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:38:31,808 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:38:31,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:38:31,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:38:31,825 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2019-10-15 01:38:31,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:38:31,908 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2019-10-15 01:38:31,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:38:31,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-15 01:38:31,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:38:31,918 INFO L225 Difference]: With dead ends: 42 [2019-10-15 01:38:31,918 INFO L226 Difference]: Without dead ends: 18 [2019-10-15 01:38:31,922 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:38:31,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-15 01:38:31,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-15 01:38:31,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-15 01:38:31,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-15 01:38:31,961 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2019-10-15 01:38:31,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:38:31,962 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-15 01:38:31,962 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:38:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-15 01:38:31,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 01:38:31,963 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:38:31,963 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:38:31,963 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:38:31,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:38:31,964 INFO L82 PathProgramCache]: Analyzing trace with hash -269262317, now seen corresponding path program 1 times [2019-10-15 01:38:31,964 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:38:31,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036543538] [2019-10-15 01:38:31,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:38:31,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:38:31,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:38:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:38:32,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:38:32,477 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036543538] [2019-10-15 01:38:32,477 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740078570] [2019-10-15 01:38:32,477 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 [2019-10-15 01:38:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:38:32,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-15 01:38:32,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:38:32,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:32,664 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:32,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:32,679 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:32,691 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:32,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:32,704 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:32,851 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:32,852 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:35,589 WARN L191 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 163 DAG size of output: 73 [2019-10-15 01:38:35,590 INFO L567 ElimStorePlain]: treesize reduction 481, result has 28.2 percent of original size [2019-10-15 01:38:35,590 INFO L464 ElimStorePlain]: Eliminatee v_prenex_9 vanished before elimination [2019-10-15 01:38:35,590 INFO L464 ElimStorePlain]: Eliminatee v_prenex_10 vanished before elimination [2019-10-15 01:38:35,590 INFO L464 ElimStorePlain]: Eliminatee v_prenex_14 vanished before elimination [2019-10-15 01:38:35,640 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:35,647 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:35,650 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:35,662 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:35,670 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:35,682 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:35,689 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:35,696 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:35,705 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:35,710 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:35,722 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:35,852 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 47 [2019-10-15 01:38:35,853 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:36,099 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-10-15 01:38:36,100 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:38:36,121 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,124 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,128 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,130 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,133 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,137 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,139 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,142 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,144 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,188 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 44 [2019-10-15 01:38:36,189 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:36,419 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2019-10-15 01:38:36,420 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:38:36,420 INFO L464 ElimStorePlain]: Eliminatee v_prenex_11 vanished before elimination [2019-10-15 01:38:36,440 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,442 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,445 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,448 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,451 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,453 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,480 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 41 [2019-10-15 01:38:36,481 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:36,658 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2019-10-15 01:38:36,658 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:38:36,659 INFO L464 ElimStorePlain]: Eliminatee v_prenex_15 vanished before elimination [2019-10-15 01:38:36,659 INFO L464 ElimStorePlain]: Eliminatee v_prenex_1 vanished before elimination [2019-10-15 01:38:36,659 INFO L464 ElimStorePlain]: Eliminatee v_prenex_2 vanished before elimination [2019-10-15 01:38:36,666 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,668 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,669 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,670 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,671 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,672 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,674 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,683 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2019-10-15 01:38:36,683 INFO L496 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:36,847 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-10-15 01:38:36,847 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:38:36,866 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,867 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,868 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,869 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,871 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,873 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,874 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,875 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-15 01:38:36,888 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2019-10-15 01:38:36,889 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:36,990 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-10-15 01:38:36,991 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-15 01:38:36,991 INFO L464 ElimStorePlain]: Eliminatee v_prenex_5 vanished before elimination [2019-10-15 01:38:36,992 INFO L464 ElimStorePlain]: Eliminatee v_prenex_6 vanished before elimination [2019-10-15 01:38:36,992 INFO L464 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2019-10-15 01:38:36,995 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 16 dim-2 vars, End of recursive call: and 5 xjuncts. [2019-10-15 01:38:36,996 INFO L221 ElimStorePlain]: Needed 7 recursive calls to eliminate 18 variables, input treesize:713, output treesize:226 [2019-10-15 01:38:37,229 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-10-15 01:38:37,232 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,234 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,238 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,240 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,242 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,276 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:38:37,322 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:38:37,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,328 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,330 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,377 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,393 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,474 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 96 treesize of output 92 [2019-10-15 01:38:37,489 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:37,491 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:37,493 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:37,512 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:37,512 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:37,513 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:37,526 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 53 treesize of output 49 [2019-10-15 01:38:37,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,527 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:37,528 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:37,548 INFO L567 ElimStorePlain]: treesize reduction 12, result has 66.7 percent of original size [2019-10-15 01:38:37,548 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:38:38,344 WARN L191 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 231 DAG size of output: 228 [2019-10-15 01:38:38,344 INFO L567 ElimStorePlain]: treesize reduction 153, result has 92.8 percent of original size [2019-10-15 01:38:38,360 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 178 treesize of output 170 [2019-10-15 01:38:38,367 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:38,368 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:38,369 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:38,379 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:38,380 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:38,381 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:38,389 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 111 treesize of output 103 [2019-10-15 01:38:38,390 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,395 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:38,400 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:38,423 INFO L567 ElimStorePlain]: treesize reduction 36, result has 40.0 percent of original size [2019-10-15 01:38:38,424 INFO L496 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:38:39,166 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 215 [2019-10-15 01:38:39,166 INFO L567 ElimStorePlain]: treesize reduction 30, result has 98.3 percent of original size [2019-10-15 01:38:39,182 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 91 treesize of output 87 [2019-10-15 01:38:39,194 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:39,195 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:39,195 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:39,216 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:39,217 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:39,217 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:39,225 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 53 treesize of output 49 [2019-10-15 01:38:39,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,226 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,227 INFO L496 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:39,243 INFO L567 ElimStorePlain]: treesize reduction 12, result has 61.3 percent of original size [2019-10-15 01:38:39,244 INFO L496 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:38:39,878 WARN L191 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 201 [2019-10-15 01:38:39,879 INFO L567 ElimStorePlain]: treesize reduction 121, result has 92.9 percent of original size [2019-10-15 01:38:39,906 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 204 treesize of output 194 [2019-10-15 01:38:39,912 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:39,913 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:39,913 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:39,923 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:39,923 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:39,924 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-15 01:38:39,940 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 146 treesize of output 136 [2019-10-15 01:38:39,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,944 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,950 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,951 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,952 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,953 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,956 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,957 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:38:39,960 INFO L496 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2019-10-15 01:38:39,969 INFO L567 ElimStorePlain]: treesize reduction 55, result has 12.7 percent of original size [2019-10-15 01:38:39,969 INFO L496 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:38:40,035 INFO L567 ElimStorePlain]: treesize reduction 1386, result has 0.6 percent of original size [2019-10-15 01:38:40,035 INFO L464 ElimStorePlain]: Eliminatee v_prenex_25 vanished before elimination [2019-10-15 01:38:40,035 INFO L464 ElimStorePlain]: Eliminatee v_prenex_35 vanished before elimination [2019-10-15 01:38:40,036 INFO L464 ElimStorePlain]: Eliminatee v_prenex_45 vanished before elimination [2019-10-15 01:38:40,036 INFO L464 ElimStorePlain]: Eliminatee v_prenex_23 vanished before elimination [2019-10-15 01:38:40,036 INFO L464 ElimStorePlain]: Eliminatee v_prenex_33 vanished before elimination [2019-10-15 01:38:40,036 INFO L464 ElimStorePlain]: Eliminatee v_prenex_29 vanished before elimination [2019-10-15 01:38:40,036 INFO L464 ElimStorePlain]: Eliminatee v_prenex_17 vanished before elimination [2019-10-15 01:38:40,036 INFO L464 ElimStorePlain]: Eliminatee v_prenex_39 vanished before elimination [2019-10-15 01:38:40,037 INFO L464 ElimStorePlain]: Eliminatee v_prenex_27 vanished before elimination [2019-10-15 01:38:40,037 INFO L464 ElimStorePlain]: Eliminatee |#memory_int| vanished before elimination [2019-10-15 01:38:40,037 INFO L464 ElimStorePlain]: Eliminatee v_prenex_37 vanished before elimination [2019-10-15 01:38:40,037 INFO L464 ElimStorePlain]: Eliminatee v_prenex_19 vanished before elimination [2019-10-15 01:38:40,037 INFO L496 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 16 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-15 01:38:40,038 INFO L221 ElimStorePlain]: Needed 9 recursive calls to eliminate 32 variables, input treesize:2192, output treesize:8 [2019-10-15 01:38:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:38:40,064 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1995520555] [2019-10-15 01:38:40,094 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-15 01:38:40,094 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:38:40,100 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:38:40,113 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:38:40,113 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:38:40,285 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 01:38:40,908 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:42,474 WARN L191 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 400 DAG size of output: 384 [2019-10-15 01:38:46,454 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:47,075 WARN L191 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 377 [2019-10-15 01:38:47,124 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:47,168 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:47,214 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:47,640 WARN L191 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 366 [2019-10-15 01:38:48,561 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:49,537 WARN L191 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2019-10-15 01:38:49,574 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:49,604 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:49,643 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:50,001 WARN L191 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 347 [2019-10-15 01:38:50,033 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:50,061 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:50,088 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:50,399 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2019-10-15 01:38:50,669 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:51,171 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2019-10-15 01:38:51,208 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:51,242 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:51,278 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:51,677 WARN L191 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-15 01:38:51,730 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:51,764 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:51,793 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:52,062 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 305 [2019-10-15 01:38:52,086 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:52,117 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:52,144 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:52,407 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2019-10-15 01:38:52,434 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:52,464 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:52,486 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:52,735 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2019-10-15 01:38:52,757 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:52,780 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:52,830 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:53,056 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 272 [2019-10-15 01:38:56,587 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:59,857 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 264 [2019-10-15 01:38:59,876 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:59,900 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:38:59,920 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:00,116 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2019-10-15 01:39:00,148 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:00,184 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:00,209 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:00,409 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2019-10-15 01:39:00,430 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:00,448 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:00,468 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:00,636 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2019-10-15 01:39:00,807 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2019-10-15 01:39:00,953 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:02,516 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 253 [2019-10-15 01:39:02,541 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:02,561 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:02,585 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:02,752 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2019-10-15 01:39:02,771 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:04,454 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2019-10-15 01:39:04,790 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,114 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2019-10-15 01:39:05,131 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,149 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,167 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,278 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2019-10-15 01:39:05,295 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,323 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,339 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,455 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,470 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,491 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,604 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,629 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,649 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,761 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,782 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,803 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:05,909 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2019-10-15 01:39:06,178 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,262 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,277 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,295 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,381 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,396 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,409 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,472 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,485 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,504 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,559 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,573 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,585 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,637 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,767 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,778 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:06,794 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:39:07,071 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-15 01:39:07,096 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2019-10-15 01:39:07,104 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 01:39:07,736 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2019-10-15 01:39:07,915 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 35 [2019-10-15 01:39:08,135 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 01:39:08,136 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8, 11] total 29 [2019-10-15 01:39:08,136 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466241755] [2019-10-15 01:39:08,139 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-10-15 01:39:08,139 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:39:08,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-10-15 01:39:08,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2019-10-15 01:39:08,141 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 29 states. [2019-10-15 01:39:08,450 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2019-10-15 01:39:08,895 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 76 [2019-10-15 01:39:09,475 WARN L191 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2019-10-15 01:39:09,772 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-10-15 01:39:10,085 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2019-10-15 01:39:10,599 WARN L191 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-10-15 01:39:10,927 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-10-15 01:39:11,340 WARN L191 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 77 [2019-10-15 01:39:11,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:39:11,489 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2019-10-15 01:39:11,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-15 01:39:11,490 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 14 [2019-10-15 01:39:11,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:39:11,492 INFO L225 Difference]: With dead ends: 34 [2019-10-15 01:39:11,493 INFO L226 Difference]: Without dead ends: 32 [2019-10-15 01:39:11,494 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=210, Invalid=1430, Unknown=0, NotChecked=0, Total=1640 [2019-10-15 01:39:11,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-15 01:39:11,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-10-15 01:39:11,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-15 01:39:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-10-15 01:39:11,506 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 14 [2019-10-15 01:39:11,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:39:11,506 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-10-15 01:39:11,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-10-15 01:39:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-10-15 01:39:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-15 01:39:11,508 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:39:11,509 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:39:11,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:39:11,710 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:39:11,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:39:11,711 INFO L82 PathProgramCache]: Analyzing trace with hash 749776737, now seen corresponding path program 1 times [2019-10-15 01:39:11,711 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:39:11,712 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251938800] [2019-10-15 01:39:11,712 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:11,712 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:39:11,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:39:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:39:11,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251938800] [2019-10-15 01:39:11,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663765782] [2019-10-15 01:39:11,950 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 [2019-10-15 01:39:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:39:12,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-15 01:39:12,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:39:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:39:12,454 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:39:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:39:12,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1822010934] [2019-10-15 01:39:12,606 INFO L162 IcfgInterpreter]: Started Sifa with 17 locations of interest [2019-10-15 01:39:12,606 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:39:12,606 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:39:12,607 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:39:12,607 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:39:12,662 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 25 for LOIs