/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 03:57:11,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 03:57:11,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 03:57:12,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 03:57:12,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 03:57:12,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 03:57:12,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 03:57:12,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 03:57:12,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 03:57:12,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 03:57:12,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 03:57:12,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 03:57:12,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 03:57:12,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 03:57:12,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 03:57:12,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 03:57:12,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 03:57:12,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 03:57:12,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 03:57:12,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 03:57:12,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 03:57:12,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 03:57:12,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 03:57:12,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 03:57:12,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 03:57:12,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 03:57:12,077 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 03:57:12,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 03:57:12,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 03:57:12,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 03:57:12,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 03:57:12,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 03:57:12,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 03:57:12,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 03:57:12,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 03:57:12,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 03:57:12,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 03:57:12,119 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 03:57:12,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 03:57:12,122 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 03:57:12,122 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 03:57:12,123 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 03:57:12,123 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 03:57:12,123 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 03:57:12,123 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 03:57:12,123 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 03:57:12,123 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 03:57:12,124 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 03:57:12,124 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 03:57:12,124 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 03:57:12,124 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 03:57:12,124 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 03:57:12,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 03:57:12,129 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 03:57:12,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 03:57:12,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 03:57:12,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 03:57:12,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 03:57:12,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 03:57:12,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 03:57:12,131 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 03:57:12,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 03:57:12,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 03:57:12,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 03:57:12,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 03:57:12,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 03:57:12,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 03:57:12,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 03:57:12,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 03:57:12,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 03:57:12,133 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 03:57:12,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 03:57:12,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 03:57:12,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 03:57:12,134 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 03:57:12,408 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 03:57:12,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 03:57:12,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 03:57:12,435 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 03:57:12,435 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 03:57:12,436 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i [2019-11-24 03:57:12,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6fe69b0/4ab10a2eca474e0bae05e7781d6b48db/FLAG87ac80df5 [2019-11-24 03:57:13,104 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 03:57:13,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unbounded-1.i [2019-11-24 03:57:13,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6fe69b0/4ab10a2eca474e0bae05e7781d6b48db/FLAG87ac80df5 [2019-11-24 03:57:13,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af6fe69b0/4ab10a2eca474e0bae05e7781d6b48db [2019-11-24 03:57:13,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 03:57:13,432 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 03:57:13,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 03:57:13,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 03:57:13,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 03:57:13,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:57:13" (1/1) ... [2019-11-24 03:57:13,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180dbcb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:13, skipping insertion in model container [2019-11-24 03:57:13,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 03:57:13" (1/1) ... [2019-11-24 03:57:13,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 03:57:13,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 03:57:13,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:57:13,984 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 03:57:14,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 03:57:14,127 INFO L208 MainTranslator]: Completed translation [2019-11-24 03:57:14,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:14 WrapperNode [2019-11-24 03:57:14,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 03:57:14,129 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 03:57:14,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 03:57:14,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 03:57:14,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:14" (1/1) ... [2019-11-24 03:57:14,165 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:14" (1/1) ... [2019-11-24 03:57:14,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 03:57:14,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 03:57:14,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 03:57:14,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 03:57:14,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:14" (1/1) ... [2019-11-24 03:57:14,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:14" (1/1) ... [2019-11-24 03:57:14,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:14" (1/1) ... [2019-11-24 03:57:14,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:14" (1/1) ... [2019-11-24 03:57:14,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:14" (1/1) ... [2019-11-24 03:57:14,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:14" (1/1) ... [2019-11-24 03:57:14,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:14" (1/1) ... [2019-11-24 03:57:14,247 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 03:57:14,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 03:57:14,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 03:57:14,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 03:57:14,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:14" (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 [2019-11-24 03:57:14,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 03:57:14,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 03:57:14,354 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 03:57:14,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 03:57:14,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 03:57:14,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 03:57:14,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 03:57:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 03:57:15,476 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 03:57:15,480 INFO L284 CfgBuilder]: Removed 51 assume(true) statements. [2019-11-24 03:57:15,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:57:15 BoogieIcfgContainer [2019-11-24 03:57:15,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 03:57:15,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 03:57:15,486 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 03:57:15,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 03:57:15,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 03:57:13" (1/3) ... [2019-11-24 03:57:15,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138984fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:57:15, skipping insertion in model container [2019-11-24 03:57:15,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 03:57:14" (2/3) ... [2019-11-24 03:57:15,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138984fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 03:57:15, skipping insertion in model container [2019-11-24 03:57:15,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 03:57:15" (3/3) ... [2019-11-24 03:57:15,496 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-1.i [2019-11-24 03:57:15,508 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 03:57:15,516 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 03:57:15,528 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 03:57:15,560 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 03:57:15,560 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 03:57:15,560 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 03:57:15,560 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 03:57:15,560 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 03:57:15,561 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 03:57:15,561 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 03:57:15,561 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 03:57:15,579 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-24 03:57:15,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 03:57:15,590 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:57:15,591 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 03:57:15,591 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:57:15,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:57:15,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1884938806, now seen corresponding path program 1 times [2019-11-24 03:57:15,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:57:15,612 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671765868] [2019-11-24 03:57:15,612 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:57:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:57:15,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:57:15,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671765868] [2019-11-24 03:57:15,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:57:15,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:57:15,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180387989] [2019-11-24 03:57:15,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:57:15,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:57:15,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:57:15,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 03:57:15,992 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 4 states. [2019-11-24 03:57:16,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:57:16,183 INFO L93 Difference]: Finished difference Result 76 states and 111 transitions. [2019-11-24 03:57:16,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 03:57:16,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-11-24 03:57:16,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:57:16,196 INFO L225 Difference]: With dead ends: 76 [2019-11-24 03:57:16,196 INFO L226 Difference]: Without dead ends: 46 [2019-11-24 03:57:16,200 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 03:57:16,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-24 03:57:16,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2019-11-24 03:57:16,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-24 03:57:16,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions. [2019-11-24 03:57:16,239 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 6 [2019-11-24 03:57:16,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:57:16,239 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 49 transitions. [2019-11-24 03:57:16,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 03:57:16,239 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions. [2019-11-24 03:57:16,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 03:57:16,240 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:57:16,240 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:57:16,241 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:57:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:57:16,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1093768333, now seen corresponding path program 1 times [2019-11-24 03:57:16,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:57:16,242 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863459133] [2019-11-24 03:57:16,242 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:57:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:57:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:57:16,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863459133] [2019-11-24 03:57:16,327 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48286093] [2019-11-24 03:57:16,327 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 [2019-11-24 03:57:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:57:16,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-24 03:57:16,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 03:57:16,665 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2019-11-24 03:57:16,668 INFO L343 Elim1Store]: treesize reduction 18, result has 85.6 percent of original size [2019-11-24 03:57:16,669 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 128 [2019-11-24 03:57:16,670 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 03:57:16,743 INFO L567 ElimStorePlain]: treesize reduction 78, result has 40.5 percent of original size [2019-11-24 03:57:16,745 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 03:57:16,751 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-24 03:57:16,752 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:77, output treesize:58 [2019-11-24 03:57:16,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 03:57:16,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 03:57:16,827 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 03:57:16,828 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 18 [2019-11-24 03:57:16,829 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 03:57:16,890 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 03:57:16,891 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 59 [2019-11-24 03:57:16,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 03:57:16,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 03:57:16,896 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-24 03:57:16,902 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 03:57:16,902 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 18 [2019-11-24 03:57:16,904 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-24 03:57:16,908 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-24 03:57:16,909 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-24 03:57:16,909 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:109, output treesize:7 [2019-11-24 03:57:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:57:16,925 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 03:57:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:57:16,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 03:57:16,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2019-11-24 03:57:16,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881382203] [2019-11-24 03:57:16,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 03:57:16,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:57:16,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 03:57:16,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-11-24 03:57:16,978 INFO L87 Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 5 states. [2019-11-24 03:57:17,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:57:17,213 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2019-11-24 03:57:17,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 03:57:17,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-24 03:57:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:57:17,217 INFO L225 Difference]: With dead ends: 57 [2019-11-24 03:57:17,217 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 03:57:17,218 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-11-24 03:57:17,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 03:57:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2019-11-24 03:57:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-24 03:57:17,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-11-24 03:57:17,239 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 7 [2019-11-24 03:57:17,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:57:17,239 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-24 03:57:17,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 03:57:17,240 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-11-24 03:57:17,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 03:57:17,242 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:57:17,243 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:57:17,457 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 03:57:17,459 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:57:17,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:57:17,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1523768780, now seen corresponding path program 1 times [2019-11-24 03:57:17,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:57:17,460 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404654030] [2019-11-24 03:57:17,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:57:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:57:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:57:17,536 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404654030] [2019-11-24 03:57:17,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:57:17,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 03:57:17,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635687798] [2019-11-24 03:57:17,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:57:17,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:57:17,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:57:17,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 03:57:17,539 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 4 states. [2019-11-24 03:57:17,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:57:17,634 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2019-11-24 03:57:17,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 03:57:17,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-24 03:57:17,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:57:17,637 INFO L225 Difference]: With dead ends: 57 [2019-11-24 03:57:17,638 INFO L226 Difference]: Without dead ends: 55 [2019-11-24 03:57:17,638 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 03:57:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-24 03:57:17,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 37. [2019-11-24 03:57:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-24 03:57:17,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 52 transitions. [2019-11-24 03:57:17,652 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 52 transitions. Word has length 7 [2019-11-24 03:57:17,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:57:17,653 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 52 transitions. [2019-11-24 03:57:17,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 03:57:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 52 transitions. [2019-11-24 03:57:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 03:57:17,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:57:17,654 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:57:17,654 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:57:17,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:57:17,654 INFO L82 PathProgramCache]: Analyzing trace with hash 960295455, now seen corresponding path program 1 times [2019-11-24 03:57:17,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:57:17,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681343457] [2019-11-24 03:57:17,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:57:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:57:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:57:17,751 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681343457] [2019-11-24 03:57:17,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 03:57:17,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 03:57:17,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986721817] [2019-11-24 03:57:17,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 03:57:17,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 03:57:17,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 03:57:17,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 03:57:17,753 INFO L87 Difference]: Start difference. First operand 37 states and 52 transitions. Second operand 4 states. [2019-11-24 03:57:17,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 03:57:17,863 INFO L93 Difference]: Finished difference Result 63 states and 86 transitions. [2019-11-24 03:57:17,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 03:57:17,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-24 03:57:17,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 03:57:17,864 INFO L225 Difference]: With dead ends: 63 [2019-11-24 03:57:17,865 INFO L226 Difference]: Without dead ends: 29 [2019-11-24 03:57:17,866 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 03:57:17,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-24 03:57:17,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-24 03:57:17,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-24 03:57:17,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2019-11-24 03:57:17,872 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 8 [2019-11-24 03:57:17,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 03:57:17,872 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-11-24 03:57:17,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 03:57:17,873 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2019-11-24 03:57:17,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-24 03:57:17,873 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 03:57:17,873 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 03:57:17,873 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 03:57:17,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 03:57:17,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1922386987, now seen corresponding path program 1 times [2019-11-24 03:57:17,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 03:57:17,874 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824690563] [2019-11-24 03:57:17,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 03:57:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:57:18,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 03:57:18,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824690563] [2019-11-24 03:57:18,053 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483382396] [2019-11-24 03:57:18,053 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 [2019-11-24 03:57:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 03:57:18,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 57 conjunts are in the unsatisfiable core [2019-11-24 03:57:18,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 03:57:18,164 INFO L377 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 38 treesize of output 34 [2019-11-24 03:57:18,164 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 03:57:18,195 INFO L567 ElimStorePlain]: treesize reduction 13, result has 72.9 percent of original size [2019-11-24 03:57:18,196 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-24 03:57:18,196 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:35 [2019-11-24 03:57:22,860 WARN L192 SmtUtils]: Spent 4.63 s on a formula simplification that was a NOOP. DAG size: 76 [2019-11-24 03:57:27,673 WARN L192 SmtUtils]: Spent 4.81 s on a formula simplification that was a NOOP. DAG size: 74 [2019-11-24 03:57:32,504 WARN L192 SmtUtils]: Spent 4.83 s on a formula simplification that was a NOOP. DAG size: 72 [2019-11-24 03:57:32,506 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 03:57:32,559 INFO L392 ElimStorePlain]: Different costs {8=[|v_#memory_$Pointer$.offset_91|, v_prenex_9, v_prenex_1], 18=[|v_#memory_$Pointer$.base_90|, v_prenex_12, v_prenex_3]} [2019-11-24 03:57:32,819 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-24 03:57:33,086 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-24 03:57:33,642 INFO L237 Elim1Store]: Index analysis took 842 ms [2019-11-24 03:57:35,414 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2019-11-24 03:57:35,416 INFO L343 Elim1Store]: treesize reduction 88, result has 60.2 percent of original size [2019-11-24 03:57:35,417 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 265 treesize of output 298 [2019-11-24 03:57:35,420 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-24 03:58:13,750 WARN L192 SmtUtils]: Spent 38.33 s on a formula simplification. DAG size of input: 171 DAG size of output: 161 [2019-11-24 03:58:13,752 INFO L567 ElimStorePlain]: treesize reduction 56, result has 93.2 percent of original size [2019-11-24 03:58:14,216 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-24 03:58:15,073 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-24 03:58:15,907 INFO L237 Elim1Store]: Index analysis took 1943 ms [2019-11-24 03:58:19,643 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2019-11-24 03:58:19,644 INFO L343 Elim1Store]: treesize reduction 88, result has 60.2 percent of original size [2019-11-24 03:58:19,645 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 260 treesize of output 293 [2019-11-24 03:58:19,647 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-24 03:58:56,545 WARN L192 SmtUtils]: Spent 36.90 s on a formula simplification. DAG size of input: 180 DAG size of output: 170 [2019-11-24 03:58:56,546 INFO L567 ElimStorePlain]: treesize reduction 56, result has 92.9 percent of original size [2019-11-24 03:58:56,832 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-24 03:58:57,081 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-24 03:58:57,456 INFO L237 Elim1Store]: Index analysis took 693 ms [2019-11-24 03:58:59,709 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2019-11-24 03:58:59,710 INFO L343 Elim1Store]: treesize reduction 88, result has 60.2 percent of original size [2019-11-24 03:58:59,711 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 263 treesize of output 296 [2019-11-24 03:58:59,713 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts.