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 0.1.24-13a467a-m [2019-10-15 01:29:50,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:29:50,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:29:50,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:29:50,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:29:50,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:29:50,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:29:50,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:29:50,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:29:50,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:29:50,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:29:50,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:29:50,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:29:50,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:29:50,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:29:50,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:29:50,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:29:50,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:29:50,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:29:50,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:29:50,754 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:29:50,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:29:50,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:29:50,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:29:50,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:29:50,774 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:29:50,775 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:29:50,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:29:50,777 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 01:29:50,811 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:29:50,811 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:29:50,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:29:50,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:29:50,813 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:29:50,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:29:50,813 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:29:50,813 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:29:50,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:29:50,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:29:50,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:29:50,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:29:50,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:29:50,817 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:29:50,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:29:50,818 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:29:50,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:29:50,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:29:50,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:29:50,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:29:50,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:29:50,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:29:50,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:29:50,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:29:50,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:29:50,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:29:50,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:29:50,820 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:29:50,821 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 01:29:51,111 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:29:51,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:29:51,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:29:51,140 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:29:51,141 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:29:51,142 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg5.i [2019-10-15 01:29:51,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/873b54703/5faa2a88069c4eb5a55157a9389e9fc3/FLAG67fbf892d [2019-10-15 01:29:51,737 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:29:51,738 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg5.i [2019-10-15 01:29:51,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/873b54703/5faa2a88069c4eb5a55157a9389e9fc3/FLAG67fbf892d [2019-10-15 01:29:52,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/873b54703/5faa2a88069c4eb5a55157a9389e9fc3 [2019-10-15 01:29:52,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:29:52,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:29:52,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:29:52,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:29:52,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:29:52,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:29:52" (1/1) ... [2019-10-15 01:29:52,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cfc3857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:29:52, skipping insertion in model container [2019-10-15 01:29:52,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:29:52" (1/1) ... [2019-10-15 01:29:52,159 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:29:52,180 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:29:52,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:29:52,415 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:29:52,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:29:52,451 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:29:52,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:29:52 WrapperNode [2019-10-15 01:29:52,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:29:52,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:29:52,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:29:52,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:29:52,550 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:29:52" (1/1) ... [2019-10-15 01:29:52,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:29:52" (1/1) ... [2019-10-15 01:29:52,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:29:52" (1/1) ... [2019-10-15 01:29:52,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:29:52" (1/1) ... [2019-10-15 01:29:52,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:29:52" (1/1) ... [2019-10-15 01:29:52,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:29:52" (1/1) ... [2019-10-15 01:29:52,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:29:52" (1/1) ... [2019-10-15 01:29:52,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:29:52,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:29:52,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:29:52,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:29:52,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:29:52" (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 01:29:52,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:29:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:29:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2019-10-15 01:29:52,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:29:52,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:29:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:29:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2019-10-15 01:29:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:29:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:29:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:29:52,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:29:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:29:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:29:52,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:29:53,044 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:29:53,045 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-15 01:29:53,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:29:53 BoogieIcfgContainer [2019-10-15 01:29:53,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:29:53,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:29:53,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:29:53,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:29:53,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:29:52" (1/3) ... [2019-10-15 01:29:53,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7e4208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:29:53, skipping insertion in model container [2019-10-15 01:29:53,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:29:52" (2/3) ... [2019-10-15 01:29:53,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7e4208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:29:53, skipping insertion in model container [2019-10-15 01:29:53,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:29:53" (3/3) ... [2019-10-15 01:29:53,056 INFO L109 eAbstractionObserver]: Analyzing ICFG mapavg5.i [2019-10-15 01:29:53,065 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:29:53,076 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:29:53,086 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:29:53,107 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:29:53,107 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:29:53,107 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:29:53,107 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:29:53,108 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:29:53,108 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:29:53,108 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:29:53,108 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:29:53,124 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-10-15 01:29:53,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-15 01:29:53,130 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:29:53,131 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:29:53,132 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:29:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:29:53,138 INFO L82 PathProgramCache]: Analyzing trace with hash 10585024, now seen corresponding path program 1 times [2019-10-15 01:29:53,148 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:29:53,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776375024] [2019-10-15 01:29:53,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:29:53,149 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:29:53,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:29:53,248 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:29:53,249 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880249873] [2019-10-15 01:29:53,249 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 01:29:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:29:53,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:29:53,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:29:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:29:53,429 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:29:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 01:29:53,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776375024] [2019-10-15 01:29:53,499 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:29:53,500 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880249873] [2019-10-15 01:29:53,501 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:29:53,502 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-15 01:29:53,502 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662913364] [2019-10-15 01:29:53,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:29:53,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:29:53,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:29:53,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:29:53,531 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 4 states. [2019-10-15 01:29:53,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:29:53,677 INFO L93 Difference]: Finished difference Result 45 states and 57 transitions. [2019-10-15 01:29:53,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:29:53,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-10-15 01:29:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:29:53,689 INFO L225 Difference]: With dead ends: 45 [2019-10-15 01:29:53,690 INFO L226 Difference]: Without dead ends: 22 [2019-10-15 01:29:53,693 INFO L600 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 [2019-10-15 01:29:53,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-15 01:29:53,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-15 01:29:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-15 01:29:53,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-15 01:29:53,732 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 25 [2019-10-15 01:29:53,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:29:53,733 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-15 01:29:53,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:29:53,733 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-15 01:29:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-15 01:29:53,735 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:29:53,736 INFO L380 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] [2019-10-15 01:29:53,937 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:29:53,941 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:29:53,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:29:53,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1325864512, now seen corresponding path program 1 times [2019-10-15 01:29:53,942 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:29:53,942 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031600363] [2019-10-15 01:29:53,942 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:29:53,943 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:29:53,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:29:53,965 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:29:53,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [726143030] [2019-10-15 01:29:53,966 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 01:29:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:29:54,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:29:54,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:29:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:29:54,063 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:29:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:29:54,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031600363] [2019-10-15 01:29:54,148 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:29:54,149 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726143030] [2019-10-15 01:29:54,149 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:29:54,149 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-10-15 01:29:54,149 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980216294] [2019-10-15 01:29:54,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:29:54,152 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:29:54,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:29:54,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:29:54,154 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2019-10-15 01:29:54,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:29:54,206 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2019-10-15 01:29:54,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 01:29:54,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2019-10-15 01:29:54,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:29:54,208 INFO L225 Difference]: With dead ends: 35 [2019-10-15 01:29:54,208 INFO L226 Difference]: Without dead ends: 23 [2019-10-15 01:29:54,210 INFO L600 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 [2019-10-15 01:29:54,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-15 01:29:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-15 01:29:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-15 01:29:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-10-15 01:29:54,217 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 27 [2019-10-15 01:29:54,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:29:54,217 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-10-15 01:29:54,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:29:54,218 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-10-15 01:29:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 01:29:54,219 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:29:54,219 INFO L380 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] [2019-10-15 01:29:54,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:29:54,424 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:29:54,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:29:54,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1765970496, now seen corresponding path program 1 times [2019-10-15 01:29:54,424 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:29:54,425 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722137217] [2019-10-15 01:29:54,425 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:29:54,425 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:29:54,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:29:54,457 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:29:54,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1569983100] [2019-10-15 01:29:54,458 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 [2019-10-15 01:29:54,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:29:54,530 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:29:54,533 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:29:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 01:29:54,571 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:29:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 01:29:54,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722137217] [2019-10-15 01:29:54,645 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:29:54,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569983100] [2019-10-15 01:29:54,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1108644154] [2019-10-15 01:29:54,674 INFO L162 IcfgInterpreter]: Started Sifa with 20 locations of interest [2019-10-15 01:29:54,674 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:29:54,685 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:29:54,699 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:29:54,699 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:29:54,943 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-15 01:29:57,151 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:30:00,761 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|)) [2019-10-15 01:30:01,522 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:30:07,129 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |main_~#x~0.offset| (+ |main_~#x~0.offset| 4)) [2019-10-15 01:30:09,132 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|))) [2019-10-15 01:30:12,775 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))) [2019-10-15 01:30:15,608 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |main_~#x~0.offset| (+ |main_~#x~0.offset| 4)) [2019-10-15 01:30:17,940 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|))) [2019-10-15 01:30:19,948 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|)) [2019-10-15 01:30:21,989 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))) [2019-10-15 01:30:27,246 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:30:30,438 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|))) [2019-10-15 01:30:33,587 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|)) [2019-10-15 01:30:38,270 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-15 01:30:40,775 WARN L160 IndexEqualityManager]: solver failed to check if following equality is implied: (= |main_~#x~0.offset| (+ |main_~#x~0.offset| 4))