/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/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-crafted/mapavg5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:16:55,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:16:55,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:16:55,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:16:55,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:16:55,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:16:55,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:16:55,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:16:55,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:16:55,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:16:55,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:16:55,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:16:55,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:16:55,519 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:16:55,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:16:55,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:16:55,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:16:55,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:16:55,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:16:55,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:16:55,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:16:55,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:16:55,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:16:55,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:16:55,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:16:55,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:16:55,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:16:55,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:16:55,553 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 [2019-11-07 01:16:55,580 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:16:55,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:16:55,584 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:16:55,584 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:16:55,584 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:16:55,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:16:55,585 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:16:55,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:16:55,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:16:55,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:16:55,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:16:55,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:16:55,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:16:55,589 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:16:55,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:16:55,590 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:16:55,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:16:55,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:16:55,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:16:55,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:16:55,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:16:55,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:16:55,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:16:55,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:16:55,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:16:55,593 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:16:55,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:16:55,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:16:55,595 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 [2019-11-07 01:16:55,902 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:16:55,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:16:55,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:16:55,920 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:16:55,921 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:16:55,921 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg5.i [2019-11-07 01:16:55,986 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22678c8f9/549a469f5ab2476ba78113e9587c8abd/FLAGf46bdf60a [2019-11-07 01:16:56,455 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:16:56,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg5.i [2019-11-07 01:16:56,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22678c8f9/549a469f5ab2476ba78113e9587c8abd/FLAGf46bdf60a [2019-11-07 01:16:56,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22678c8f9/549a469f5ab2476ba78113e9587c8abd [2019-11-07 01:16:56,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:16:56,883 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:16:56,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:16:56,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:16:56,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:16:56,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175e7e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:56, skipping insertion in model container [2019-11-07 01:16:56,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:16:56" (1/1) ... [2019-11-07 01:16:56,929 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:16:56,984 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:16:57,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:16:57,321 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:16:57,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:16:57,358 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:16:57,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57 WrapperNode [2019-11-07 01:16:57,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:16:57,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:16:57,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:16:57,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:16:57,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (1/1) ... [2019-11-07 01:16:57,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:16:57,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:16:57,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:16:57,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:16:57,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (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 [2019-11-07 01:16:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:16:57,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:16:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2019-11-07 01:16:57,542 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:16:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:16:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:16:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2019-11-07 01:16:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 01:16:57,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:16:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 01:16:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 01:16:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 01:16:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:16:57,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:16:57,951 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:16:57,951 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 01:16:57,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:16:57 BoogieIcfgContainer [2019-11-07 01:16:57,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:16:57,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:16:57,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:16:57,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:16:57,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:16:56" (1/3) ... [2019-11-07 01:16:57,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fa272c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:16:57, skipping insertion in model container [2019-11-07 01:16:57,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:16:57" (2/3) ... [2019-11-07 01:16:57,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fa272c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:16:57, skipping insertion in model container [2019-11-07 01:16:57,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:16:57" (3/3) ... [2019-11-07 01:16:57,960 INFO L109 eAbstractionObserver]: Analyzing ICFG mapavg5.i [2019-11-07 01:16:57,970 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:16:57,978 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:16:57,988 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:16:58,011 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:16:58,011 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:16:58,011 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:16:58,012 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:16:58,012 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:16:58,012 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:16:58,012 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:16:58,012 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:16:58,028 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-07 01:16:58,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-07 01:16:58,034 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:58,034 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:16:58,036 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash 10585024, now seen corresponding path program 1 times [2019-11-07 01:16:58,048 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:58,049 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945956107] [2019-11-07 01:16:58,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:58,254 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 01:16:58,260 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302022348] [2019-11-07 01:16:58,260 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 [2019-11-07 01:16:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:58,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 01:16:58,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:16:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 01:16:58,438 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:16:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-07 01:16:58,497 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945956107] [2019-11-07 01:16:58,498 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 01:16:58,498 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302022348] [2019-11-07 01:16:58,499 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:16:58,500 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-07 01:16:58,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950949174] [2019-11-07 01:16:58,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 01:16:58,507 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:16:58,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:16:58,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 01:16:58,523 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 4 states. [2019-11-07 01:16:58,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:16:58,641 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2019-11-07 01:16:58,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 01:16:58,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-11-07 01:16:58,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:16:58,653 INFO L225 Difference]: With dead ends: 45 [2019-11-07 01:16:58,654 INFO L226 Difference]: Without dead ends: 22 [2019-11-07 01:16:58,657 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 01:16:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-07 01:16:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-07 01:16:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-07 01:16:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-11-07 01:16:58,701 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 25 [2019-11-07 01:16:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:16:58,702 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-11-07 01:16:58,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 01:16:58,702 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-11-07 01:16:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-07 01:16:58,704 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:58,704 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:16:58,912 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:16:58,912 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:58,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:58,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1325864512, now seen corresponding path program 1 times [2019-11-07 01:16:58,913 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:58,916 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741682797] [2019-11-07 01:16:58,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:58,977 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 01:16:58,977 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271484997] [2019-11-07 01:16:58,977 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 [2019-11-07 01:16:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:59,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 01:16:59,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:16:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 01:16:59,227 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:16:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-07 01:16:59,372 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741682797] [2019-11-07 01:16:59,372 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 01:16:59,373 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271484997] [2019-11-07 01:16:59,373 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-07 01:16:59,373 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-11-07 01:16:59,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824885524] [2019-11-07 01:16:59,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 01:16:59,375 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:16:59,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 01:16:59,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:16:59,376 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2019-11-07 01:16:59,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:16:59,446 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-11-07 01:16:59,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 01:16:59,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-11-07 01:16:59,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:16:59,448 INFO L225 Difference]: With dead ends: 35 [2019-11-07 01:16:59,448 INFO L226 Difference]: Without dead ends: 23 [2019-11-07 01:16:59,449 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-07 01:16:59,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-07 01:16:59,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-07 01:16:59,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-07 01:16:59,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-07 01:16:59,456 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 27 [2019-11-07 01:16:59,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:16:59,457 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-07 01:16:59,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 01:16:59,457 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-11-07 01:16:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-07 01:16:59,458 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:16:59,458 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:16:59,662 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:16:59,663 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:16:59,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:16:59,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1765970496, now seen corresponding path program 1 times [2019-11-07 01:16:59,664 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:16:59,664 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127179271] [2019-11-07 01:16:59,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:16:59,684 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 01:16:59,685 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263741674] [2019-11-07 01:16:59,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:16:59,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:16:59,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:16:59,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:16:59,791 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 01:16:59,791 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:16:59,875 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-07 01:16:59,876 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127179271] [2019-11-07 01:16:59,876 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 01:16:59,876 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263741674] [2019-11-07 01:16:59,876 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2070924793] [2019-11-07 01:16:59,919 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-11-07 01:16:59,919 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:16:59,927 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:16:59,940 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:16:59,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:17:00,134 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-11-07 01:17:08,281 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |main_~#x~0.offset| (+ |main_~#x~0.offset| 4)) [2019-11-07 01:17:10,285 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (let ((.cse0 (select |v_#memory_int_41| |main_~#x~0.base|))) (= (select .cse0 (+ |main_~#x~0.offset| 4)) (select .cse0 |main_~#x~0.offset|))) [2019-11-07 01:17:12,287 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_41| |main_~#x~0.base|))) (= (select .cse0 (+ |main_~#x~0.offset| 4)) (select .cse0 |main_~#x~0.offset|))) [2019-11-07 01:17:14,548 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) [2019-11-07 01:17:16,551 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) [2019-11-07 01:17:18,553 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) [2019-11-07 01:17:20,555 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) [2019-11-07 01:17:24,944 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |main_~#x~0.offset| (+ |main_~#x~0.offset| 4)) [2019-11-07 01:17:28,098 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= main_~temp~0 (select (select |v_#memory_int_41| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) [2019-11-07 01:17:31,461 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) |main_~#x~0.offset|)) [2019-11-07 01:17:32,205 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-11-07 01:17:46,502 WARN L176 IndexEqualityManager]: solver failed to check if following not equals relation is implied: (let ((.cse0 (select |v_#memory_int_41| |main_~#x~0.base|))) (= (select .cse0 (+ |main_~#x~0.offset| 4)) (select .cse0 |main_~#x~0.offset|)))