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/reducercommutativity/sep10-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:20:37,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:20:37,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:20:37,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:20:37,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:20:37,232 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:20:37,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:20:37,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:20:37,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:20:37,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:20:37,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:20:37,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:20:37,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:20:37,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:20:37,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:20:37,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:20:37,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:20:37,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:20:37,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:20:37,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:20:37,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:20:37,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:20:37,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:20:37,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:20:37,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 23:20:37,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:20:37,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:20:37,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:20:37,304 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 [2019-10-13 23:20:37,318 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:20:37,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:20:37,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:20:37,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:20:37,320 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:20:37,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:20:37,321 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:20:37,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:20:37,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:20:37,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:20:37,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:20:37,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:20:37,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:20:37,322 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:20:37,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:20:37,322 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:20:37,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:20:37,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:20:37,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:20:37,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:20:37,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:20:37,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:20:37,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:20:37,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:20:37,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:20:37,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:20:37,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:20:37,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:20:37,325 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 [2019-10-13 23:20:37,590 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:20:37,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:20:37,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:20:37,609 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:20:37,609 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:20:37,610 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sep10-2.i [2019-10-13 23:20:37,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7aff5db/7285b79a75c64baca34f27c6e8f584a2/FLAG3a96b008b [2019-10-13 23:20:38,122 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:20:38,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/sep10-2.i [2019-10-13 23:20:38,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7aff5db/7285b79a75c64baca34f27c6e8f584a2/FLAG3a96b008b [2019-10-13 23:20:38,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7aff5db/7285b79a75c64baca34f27c6e8f584a2 [2019-10-13 23:20:38,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:20:38,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:20:38,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:20:38,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:20:38,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:20:38,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:20:38" (1/1) ... [2019-10-13 23:20:38,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3ce9ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:38, skipping insertion in model container [2019-10-13 23:20:38,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:20:38" (1/1) ... [2019-10-13 23:20:38,564 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:20:38,582 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:20:38,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:20:38,761 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:20:38,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:20:38,883 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:20:38,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:38 WrapperNode [2019-10-13 23:20:38,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:20:38,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:20:38,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:20:38,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:20:38,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:38" (1/1) ... [2019-10-13 23:20:38,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:38" (1/1) ... [2019-10-13 23:20:38,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:38" (1/1) ... [2019-10-13 23:20:38,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:38" (1/1) ... [2019-10-13 23:20:38,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:38" (1/1) ... [2019-10-13 23:20:38,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:38" (1/1) ... [2019-10-13 23:20:38,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:38" (1/1) ... [2019-10-13 23:20:38,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:20:38,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:20:38,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:20:38,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:20:38,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:38" (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 [2019-10-13 23:20:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:20:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:20:38,992 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2019-10-13 23:20:38,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:20:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:20:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:20:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2019-10-13 23:20:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:20:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:20:38,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:20:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:20:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:20:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:20:38,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:20:39,437 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:20:39,438 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 23:20:39,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:20:39 BoogieIcfgContainer [2019-10-13 23:20:39,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:20:39,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:20:39,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:20:39,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:20:39,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:20:38" (1/3) ... [2019-10-13 23:20:39,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68344391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:20:39, skipping insertion in model container [2019-10-13 23:20:39,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:20:38" (2/3) ... [2019-10-13 23:20:39,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68344391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:20:39, skipping insertion in model container [2019-10-13 23:20:39,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:20:39" (3/3) ... [2019-10-13 23:20:39,447 INFO L109 eAbstractionObserver]: Analyzing ICFG sep10-2.i [2019-10-13 23:20:39,455 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:20:39,463 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:20:39,475 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:20:39,501 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:20:39,502 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:20:39,502 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:20:39,502 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:20:39,502 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:20:39,502 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:20:39,502 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:20:39,503 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:20:39,522 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-13 23:20:39,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-13 23:20:39,528 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:39,529 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] [2019-10-13 23:20:39,532 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:39,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:39,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1553264816, now seen corresponding path program 1 times [2019-10-13 23:20:39,548 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:39,548 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815868053] [2019-10-13 23:20:39,549 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:39,549 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:39,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:39,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 23:20:39,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815868053] [2019-10-13 23:20:39,745 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:20:39,745 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:20:39,746 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994167151] [2019-10-13 23:20:39,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:39,751 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:39,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:39,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:20:39,771 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2019-10-13 23:20:39,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:39,815 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2019-10-13 23:20:39,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:39,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-13 23:20:39,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:39,829 INFO L225 Difference]: With dead ends: 41 [2019-10-13 23:20:39,830 INFO L226 Difference]: Without dead ends: 20 [2019-10-13 23:20:39,835 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:20:39,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-13 23:20:39,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-13 23:20:39,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 23:20:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-10-13 23:20:39,896 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 24 [2019-10-13 23:20:39,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:39,896 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-10-13 23:20:39,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:39,897 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-10-13 23:20:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 23:20:39,901 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:39,901 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] [2019-10-13 23:20:39,902 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:39,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:39,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1274606805, now seen corresponding path program 1 times [2019-10-13 23:20:39,904 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:39,904 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207293743] [2019-10-13 23:20:39,904 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:39,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:39,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:40,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:20:40,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207293743] [2019-10-13 23:20:40,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727526438] [2019-10-13 23:20:40,030 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 [2019-10-13 23:20:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:40,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 23:20:40,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:20:40,141 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:20:40,186 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:20:40,186 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-13 23:20:40,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165396694] [2019-10-13 23:20:40,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:40,189 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:40,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:40,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:20:40,190 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 3 states. [2019-10-13 23:20:40,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:40,206 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2019-10-13 23:20:40,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:40,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-13 23:20:40,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:40,208 INFO L225 Difference]: With dead ends: 33 [2019-10-13 23:20:40,209 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 23:20:40,210 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:20:40,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 23:20:40,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-13 23:20:40,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 23:20:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-10-13 23:20:40,216 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2019-10-13 23:20:40,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:40,217 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-10-13 23:20:40,217 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:40,217 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-10-13 23:20:40,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-13 23:20:40,218 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:40,218 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:40,423 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:40,423 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:40,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:40,424 INFO L82 PathProgramCache]: Analyzing trace with hash -544560989, now seen corresponding path program 1 times [2019-10-13 23:20:40,424 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:40,424 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74120634] [2019-10-13 23:20:40,424 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:40,425 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:40,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:40,505 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74120634] [2019-10-13 23:20:40,506 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:20:40,506 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:20:40,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229001867] [2019-10-13 23:20:40,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:20:40,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:40,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:20:40,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:20:40,508 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 3 states. [2019-10-13 23:20:40,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:40,524 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-13 23:20:40,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:20:40,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-10-13 23:20:40,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:40,526 INFO L225 Difference]: With dead ends: 31 [2019-10-13 23:20:40,527 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 23:20:40,528 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:20:40,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 23:20:40,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-13 23:20:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-13 23:20:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2019-10-13 23:20:40,537 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 28 [2019-10-13 23:20:40,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:40,539 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2019-10-13 23:20:40,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:20:40,539 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2019-10-13 23:20:40,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-13 23:20:40,540 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:40,541 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:40,541 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:40,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:40,542 INFO L82 PathProgramCache]: Analyzing trace with hash -5957836, now seen corresponding path program 1 times [2019-10-13 23:20:40,542 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:40,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334216550] [2019-10-13 23:20:40,542 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:40,542 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:40,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:40,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334216550] [2019-10-13 23:20:40,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179190447] [2019-10-13 23:20:40,650 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 [2019-10-13 23:20:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:40,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:20:40,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:40,770 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 23:20:40,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1381939006] [2019-10-13 23:20:40,843 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:40,844 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:40,850 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:40,857 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:40,858 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:40,987 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:43,187 INFO L199 IcfgInterpreter]: Interpreting procedure sep with input of size 1 for LOIs [2019-10-13 23:20:43,270 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:43,275 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:43,275 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:43,276 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 10 main_~i~1) (not (< main_~i~1 10))) [2019-10-13 23:20:43,276 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 601#(exists ((v_prenex_2 Int) (v_prenex_1 Int) (v_sep_~ret~0_BEFORE_RETURN_2 Int) (v_sep_~ret~0_BEFORE_RETURN_1 Int)) (or (and (<= main_~ret~1 2147483647) (= main_~ret~1 (mod v_prenex_1 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_1 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_1 4294967296) 2147483647)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (+ (mod v_sep_~ret~0_BEFORE_RETURN_1 4294967296) (- 4294967296))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~ret~1 (mod v_prenex_2 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= (mod v_prenex_2 4294967296) 2147483647) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~ret~1 (+ (mod v_sep_~ret~0_BEFORE_RETURN_2 4294967296) (- 4294967296))) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_2 4294967296) 2147483647)) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:43,276 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 666#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:43,277 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 23:20:43,277 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 657#(<= 0 sep_~i~0) [2019-10-13 23:20:43,277 INFO L193 IcfgInterpreter]: Reachable states at location sepENTRY satisfy 610#true [2019-10-13 23:20:43,277 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:43,278 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:43,278 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 671#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:43,278 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 488#true [2019-10-13 23:20:43,278 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:43,279 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 531#(and (not (< main_~i~2 9)) (<= 9 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) [2019-10-13 23:20:43,279 INFO L193 IcfgInterpreter]: Reachable states at location sepEXIT satisfy 662#(and (not (< sep_~i~0 10)) (= |sep_#res| (ite (<= (mod sep_~ret~0 4294967296) 2147483647) (mod sep_~ret~0 4294967296) (+ (mod sep_~ret~0 4294967296) (- 4294967296)))) (<= 10 sep_~i~0) (<= 0 sep_~i~0)) [2019-10-13 23:20:43,279 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 243#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_29 Int) (v_prenex_30 Int) (v_sep_~ret~0_BEFORE_RETURN_6 Int) (v_sep_~ret~0_BEFORE_RETURN_5 Int)) (or (and (<= (mod v_prenex_29 4294967296) 2147483647) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (= (mod v_prenex_29 4294967296) main_~ret5~0) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_5 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_5 4294967296) (- 4294967296)) main_~ret5~0) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= (+ (mod v_prenex_30 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_30 4294967296) 2147483647)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (mod v_sep_~ret~0_BEFORE_RETURN_6 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_6 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0))))) (and (exists ((v_prenex_29 Int) (v_prenex_30 Int) (v_sep_~ret~0_BEFORE_RETURN_6 Int) (v_sep_~ret~0_BEFORE_RETURN_5 Int)) (or (and (<= (mod v_prenex_29 4294967296) 2147483647) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (= (mod v_prenex_29 4294967296) main_~ret5~0) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_5 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_5 4294967296) (- 4294967296)) main_~ret5~0) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= (+ (mod v_prenex_30 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_prenex_30 4294967296) 2147483647)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (mod v_sep_~ret~0_BEFORE_RETURN_6 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_6 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))) (not (= main_~ret~1 main_~ret5~0)))) [2019-10-13 23:20:43,280 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 129#(or (exists ((v_prenex_1 Int) (v_sep_~ret~0_BEFORE_RETURN_1 Int)) (or (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_1 4294967296) 2147483647)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_1 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 10))) (and (= (mod v_prenex_1 4294967296) |main_#t~ret6|) (not (< main_~i~1 10)) (<= (mod v_prenex_1 4294967296) 2147483647)))) (exists ((v_prenex_2 Int) (v_sep_~ret~0_BEFORE_RETURN_2 Int)) (or (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_2 4294967296) (- 4294967296)) |main_#t~ret6|) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_2 4294967296) 2147483647)) (not (< main_~i~1 10))) (and (= (mod v_prenex_2 4294967296) |main_#t~ret6|) (not (< main_~i~1 10)) (<= (mod v_prenex_2 4294967296) 2147483647))))) [2019-10-13 23:20:43,280 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 433#true [2019-10-13 23:20:43,280 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 322#true [2019-10-13 23:20:43,280 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 596#true [2019-10-13 23:20:43,281 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 569#true [2019-10-13 23:20:43,655 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:43,655 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 23:20:43,655 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940127958] [2019-10-13 23:20:43,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 23:20:43,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:43,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 23:20:43,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:20:43,661 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 18 states. [2019-10-13 23:20:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:44,358 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-10-13 23:20:44,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:20:44,359 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2019-10-13 23:20:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:44,362 INFO L225 Difference]: With dead ends: 40 [2019-10-13 23:20:44,362 INFO L226 Difference]: Without dead ends: 25 [2019-10-13 23:20:44,364 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2019-10-13 23:20:44,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-13 23:20:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-13 23:20:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 23:20:44,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-10-13 23:20:44,375 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 29 [2019-10-13 23:20:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:44,375 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-10-13 23:20:44,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 23:20:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-10-13 23:20:44,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 23:20:44,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:44,379 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:44,591 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:44,592 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:44,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:44,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1961836647, now seen corresponding path program 2 times [2019-10-13 23:20:44,593 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:44,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723994260] [2019-10-13 23:20:44,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:44,594 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:44,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:20:44,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723994260] [2019-10-13 23:20:44,696 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724894698] [2019-10-13 23:20:44,696 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-10-13 23:20:44,790 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 23:20:44,790 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:44,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:20:44,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:20:44,810 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:20:44,839 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [670700544] [2019-10-13 23:20:44,841 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:44,841 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:44,845 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:44,845 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:44,846 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:44,879 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:46,410 INFO L199 IcfgInterpreter]: Interpreting procedure sep with input of size 1 for LOIs [2019-10-13 23:20:46,459 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:46,464 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:46,464 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:46,464 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 10 main_~i~1) (not (< main_~i~1 10))) [2019-10-13 23:20:46,465 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 601#(exists ((v_prenex_196 Int) (v_sep_~ret~0_BEFORE_RETURN_28 Int) (v_sep_~ret~0_BEFORE_RETURN_27 Int) (v_prenex_195 Int)) (or (and (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (mod v_prenex_195 4294967296) main_~ret~1) (<= (mod v_prenex_195 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (= (+ (mod v_prenex_196 4294967296) (- 4294967296)) main_~ret~1) (not (<= (mod v_prenex_196 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_27 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_27 4294967296) (- 4294967296)) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (mod v_sep_~ret~0_BEFORE_RETURN_28 4294967296) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_sep_~ret~0_BEFORE_RETURN_28 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:46,465 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 666#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:46,466 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 23:20:46,466 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 657#(<= 0 sep_~i~0) [2019-10-13 23:20:46,466 INFO L193 IcfgInterpreter]: Reachable states at location sepENTRY satisfy 610#true [2019-10-13 23:20:46,466 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:46,466 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:46,467 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 671#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:46,467 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 488#true [2019-10-13 23:20:46,467 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:46,467 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 531#(and (not (< main_~i~2 9)) (<= 9 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) [2019-10-13 23:20:46,467 INFO L193 IcfgInterpreter]: Reachable states at location sepEXIT satisfy 662#(and (not (< sep_~i~0 10)) (= |sep_#res| (ite (<= (mod sep_~ret~0 4294967296) 2147483647) (mod sep_~ret~0 4294967296) (+ (mod sep_~ret~0 4294967296) (- 4294967296)))) (<= 10 sep_~i~0) (<= 0 sep_~i~0)) [2019-10-13 23:20:46,468 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 243#(or (and (exists ((v_sep_~ret~0_BEFORE_RETURN_31 Int) (v_prenex_224 Int) (v_sep_~ret~0_BEFORE_RETURN_32 Int) (v_prenex_223 Int)) (or (and (= main_~ret5~0 (+ (mod v_sep_~ret~0_BEFORE_RETURN_32 4294967296) (- 4294967296))) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_32 4294967296) 2147483647))) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (= (mod v_sep_~ret~0_BEFORE_RETURN_31 4294967296) main_~ret5~0) (<= (mod v_sep_~ret~0_BEFORE_RETURN_31 4294967296) 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (<= (mod v_prenex_223 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_prenex_223 4294967296) (- 4294967296))) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_224 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (= main_~ret5~0 (mod v_prenex_224 4294967296))))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_sep_~ret~0_BEFORE_RETURN_31 Int) (v_prenex_224 Int) (v_sep_~ret~0_BEFORE_RETURN_32 Int) (v_prenex_223 Int)) (or (and (= main_~ret5~0 (+ (mod v_sep_~ret~0_BEFORE_RETURN_32 4294967296) (- 4294967296))) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_32 4294967296) 2147483647))) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (= (mod v_sep_~ret~0_BEFORE_RETURN_31 4294967296) main_~ret5~0) (<= (mod v_sep_~ret~0_BEFORE_RETURN_31 4294967296) 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (<= (mod v_prenex_223 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= main_~ret5~0 (+ (mod v_prenex_223 4294967296) (- 4294967296))) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_224 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (= main_~ret5~0 (mod v_prenex_224 4294967296))))))) [2019-10-13 23:20:46,468 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 129#(or (exists ((v_sep_~ret~0_BEFORE_RETURN_27 Int) (v_prenex_195 Int)) (or (and (= (mod v_prenex_195 4294967296) |main_#t~ret6|) (<= (mod v_prenex_195 4294967296) 2147483647) (not (< main_~i~1 10))) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_27 4294967296) (- 4294967296)) |main_#t~ret6|) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_27 4294967296) 2147483647)) (not (< main_~i~1 10))))) (exists ((v_sep_~ret~0_BEFORE_RETURN_28 Int) (v_prenex_196 Int)) (or (and (= (mod v_sep_~ret~0_BEFORE_RETURN_28 4294967296) |main_#t~ret6|) (not (< main_~i~1 10)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_28 4294967296) 2147483647)) (and (not (<= (mod v_prenex_196 4294967296) 2147483647)) (= (+ (mod v_prenex_196 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 10)))))) [2019-10-13 23:20:46,468 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 433#true [2019-10-13 23:20:46,468 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 322#true [2019-10-13 23:20:46,469 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 596#true [2019-10-13 23:20:46,469 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 569#true [2019-10-13 23:20:46,825 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:46,825 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 23:20:46,826 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266933318] [2019-10-13 23:20:46,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 23:20:46,827 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:46,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 23:20:46,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:20:46,828 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 18 states. [2019-10-13 23:20:47,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:47,493 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2019-10-13 23:20:47,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:20:47,494 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 32 [2019-10-13 23:20:47,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:47,495 INFO L225 Difference]: With dead ends: 42 [2019-10-13 23:20:47,495 INFO L226 Difference]: Without dead ends: 28 [2019-10-13 23:20:47,497 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2019-10-13 23:20:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-13 23:20:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-13 23:20:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-13 23:20:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-10-13 23:20:47,503 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 32 [2019-10-13 23:20:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:47,504 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-10-13 23:20:47,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 23:20:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-10-13 23:20:47,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-13 23:20:47,505 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:47,505 INFO L380 BasicCegarLoop]: trace histogram [12, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:47,709 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:47,709 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:47,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:47,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1430720737, now seen corresponding path program 3 times [2019-10-13 23:20:47,710 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:47,710 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974425980] [2019-10-13 23:20:47,710 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:47,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:47,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:47,835 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 23:20:47,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974425980] [2019-10-13 23:20:47,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333524164] [2019-10-13 23:20:47,836 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:47,974 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 23:20:47,975 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:47,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 23:20:47,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:48,030 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 23:20:48,031 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-13 23:20:48,131 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [713250250] [2019-10-13 23:20:48,133 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:48,133 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:48,134 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:48,134 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:48,134 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:48,151 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:49,454 INFO L199 IcfgInterpreter]: Interpreting procedure sep with input of size 1 for LOIs [2019-10-13 23:20:49,485 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:49,488 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:49,488 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:49,489 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 10 main_~i~1) (not (< main_~i~1 10))) [2019-10-13 23:20:49,489 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 601#(exists ((v_sep_~ret~0_BEFORE_RETURN_53 Int) (v_prenex_389 Int) (v_sep_~ret~0_BEFORE_RETURN_54 Int) (v_prenex_390 Int)) (or (and (<= main_~ret~1 2147483647) (= (+ (mod v_prenex_390 4294967296) (- 4294967296)) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_390 4294967296) 2147483647)) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (mod v_sep_~ret~0_BEFORE_RETURN_54 4294967296) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_sep_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296)) main_~ret~1) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_53 4294967296) 2147483647)) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (mod v_prenex_389 4294967296) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_389 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:49,489 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 666#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:49,489 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 23:20:49,490 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 657#(<= 0 sep_~i~0) [2019-10-13 23:20:49,490 INFO L193 IcfgInterpreter]: Reachable states at location sepENTRY satisfy 610#true [2019-10-13 23:20:49,490 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:49,490 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:49,490 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 671#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:49,491 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 488#true [2019-10-13 23:20:49,491 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:49,491 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 531#(and (not (< main_~i~2 9)) (<= 9 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) [2019-10-13 23:20:49,491 INFO L193 IcfgInterpreter]: Reachable states at location sepEXIT satisfy 662#(and (not (< sep_~i~0 10)) (= |sep_#res| (ite (<= (mod sep_~ret~0 4294967296) 2147483647) (mod sep_~ret~0 4294967296) (+ (mod sep_~ret~0 4294967296) (- 4294967296)))) (<= 10 sep_~i~0) (<= 0 sep_~i~0)) [2019-10-13 23:20:49,491 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 243#(or (and (exists ((v_prenex_417 Int) (v_sep_~ret~0_BEFORE_RETURN_57 Int) (v_prenex_418 Int) (v_sep_~ret~0_BEFORE_RETURN_58 Int)) (or (and (= (mod v_prenex_417 4294967296) main_~ret5~0) (not (< main_~i~2 9)) (<= (mod v_prenex_417 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_57 4294967296) (- 4294967296)) main_~ret5~0) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_57 4294967296) 2147483647)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_prenex_418 4294967296) 2147483647)) (= main_~ret5~0 (+ (mod v_prenex_418 4294967296) (- 4294967296)))) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (mod v_sep_~ret~0_BEFORE_RETURN_58 4294967296)) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (<= (mod v_sep_~ret~0_BEFORE_RETURN_58 4294967296) 2147483647)))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_417 Int) (v_sep_~ret~0_BEFORE_RETURN_57 Int) (v_prenex_418 Int) (v_sep_~ret~0_BEFORE_RETURN_58 Int)) (or (and (= (mod v_prenex_417 4294967296) main_~ret5~0) (not (< main_~i~2 9)) (<= (mod v_prenex_417 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_57 4294967296) (- 4294967296)) main_~ret5~0) (<= 0 (+ main_~ret5~0 2147483648)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_57 4294967296) 2147483647)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_prenex_418 4294967296) 2147483647)) (= main_~ret5~0 (+ (mod v_prenex_418 4294967296) (- 4294967296)))) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (mod v_sep_~ret~0_BEFORE_RETURN_58 4294967296)) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (<= (mod v_sep_~ret~0_BEFORE_RETURN_58 4294967296) 2147483647)))))) [2019-10-13 23:20:49,492 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 129#(or (exists ((v_sep_~ret~0_BEFORE_RETURN_53 Int) (v_prenex_389 Int)) (or (and (<= (mod v_prenex_389 4294967296) 2147483647) (not (< main_~i~1 10)) (= (mod v_prenex_389 4294967296) |main_#t~ret6|)) (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_53 4294967296) 2147483647)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_53 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 10))))) (exists ((v_sep_~ret~0_BEFORE_RETURN_54 Int) (v_prenex_390 Int)) (or (and (not (<= (mod v_prenex_390 4294967296) 2147483647)) (= |main_#t~ret6| (+ (mod v_prenex_390 4294967296) (- 4294967296))) (not (< main_~i~1 10))) (and (= (mod v_sep_~ret~0_BEFORE_RETURN_54 4294967296) |main_#t~ret6|) (not (< main_~i~1 10)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647))))) [2019-10-13 23:20:49,492 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 433#true [2019-10-13 23:20:49,492 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 322#true [2019-10-13 23:20:49,492 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 596#true [2019-10-13 23:20:49,493 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 569#true [2019-10-13 23:20:49,963 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:49,963 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 11] total 27 [2019-10-13 23:20:49,963 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899324440] [2019-10-13 23:20:49,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-10-13 23:20:49,964 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:49,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-10-13 23:20:49,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2019-10-13 23:20:49,965 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 28 states. [2019-10-13 23:20:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:51,238 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2019-10-13 23:20:51,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-10-13 23:20:51,239 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 41 [2019-10-13 23:20:51,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:51,240 INFO L225 Difference]: With dead ends: 53 [2019-10-13 23:20:51,240 INFO L226 Difference]: Without dead ends: 35 [2019-10-13 23:20:51,242 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=399, Invalid=2151, Unknown=0, NotChecked=0, Total=2550 [2019-10-13 23:20:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-13 23:20:51,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-10-13 23:20:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-13 23:20:51,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2019-10-13 23:20:51,249 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 41 [2019-10-13 23:20:51,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:51,250 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2019-10-13 23:20:51,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-10-13 23:20:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2019-10-13 23:20:51,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 23:20:51,252 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:51,252 INFO L380 BasicCegarLoop]: trace histogram [30, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:51,455 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:51,456 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:51,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:51,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1473867866, now seen corresponding path program 4 times [2019-10-13 23:20:51,456 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:51,456 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881927834] [2019-10-13 23:20:51,457 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:51,457 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:51,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-10-13 23:20:51,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881927834] [2019-10-13 23:20:51,616 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592684309] [2019-10-13 23:20:51,617 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:51,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 23:20:51,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-10-13 23:20:51,793 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2019-10-13 23:20:51,856 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [537832934] [2019-10-13 23:20:51,858 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:51,858 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:51,859 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:51,859 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:51,859 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:51,874 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:53,377 INFO L199 IcfgInterpreter]: Interpreting procedure sep with input of size 1 for LOIs [2019-10-13 23:20:53,409 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:53,413 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:53,413 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:53,413 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 10 main_~i~1) (not (< main_~i~1 10))) [2019-10-13 23:20:53,414 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 601#(or (exists ((v_prenex_583 Int) (v_prenex_584 Int) (v_sep_~ret~0_BEFORE_RETURN_80 Int) (v_sep_~ret~0_BEFORE_RETURN_79 Int)) (or (and (<= main_~ret~1 2147483647) (= (mod v_prenex_584 4294967296) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_584 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_sep_~ret~0_BEFORE_RETURN_79 4294967296) 2147483647) (= (mod v_sep_~ret~0_BEFORE_RETURN_79 4294967296) main_~ret~1) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_80 4294967296) (- 4294967296)) main_~ret~1) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_80 4294967296) 2147483647)) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_583 4294967296) 2147483647)) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))))) (exists ((v_prenex_583 Int) (v_prenex_584 Int) (v_sep_~ret~0_BEFORE_RETURN_80 Int) (v_sep_~ret~0_BEFORE_RETURN_79 Int)) (or (and (<= main_~ret~1 2147483647) (= (mod v_prenex_584 4294967296) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_584 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_80 4294967296) (- 4294967296)) main_~ret~1) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_80 4294967296) 2147483647)) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (<= (mod v_prenex_583 4294967296) 2147483647)) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= (mod v_sep_~ret~0_BEFORE_RETURN_79 4294967296) main_~ret~1) (<= (mod v_sep_~ret~0_BEFORE_RETURN_79 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648)))))) [2019-10-13 23:20:53,414 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 666#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:53,414 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 23:20:53,414 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 657#(<= 0 sep_~i~0) [2019-10-13 23:20:53,414 INFO L193 IcfgInterpreter]: Reachable states at location sepENTRY satisfy 610#true [2019-10-13 23:20:53,415 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:53,415 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:53,415 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 671#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:53,415 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 488#true [2019-10-13 23:20:53,415 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:53,415 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 531#(and (not (< main_~i~2 9)) (<= 9 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) [2019-10-13 23:20:53,416 INFO L193 IcfgInterpreter]: Reachable states at location sepEXIT satisfy 662#(and (not (< sep_~i~0 10)) (= |sep_#res| (ite (<= (mod sep_~ret~0 4294967296) 2147483647) (mod sep_~ret~0 4294967296) (+ (mod sep_~ret~0 4294967296) (- 4294967296)))) (<= 10 sep_~i~0) (<= 0 sep_~i~0)) [2019-10-13 23:20:53,416 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 243#(or (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_prenex_611 Int) (v_prenex_612 Int) (v_sep_~ret~0_BEFORE_RETURN_84 Int) (v_sep_~ret~0_BEFORE_RETURN_83 Int)) (or (and (<= (mod v_prenex_611 4294967296) 2147483647) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (= main_~ret5~0 (mod v_prenex_611 4294967296))) (and (= (+ (mod v_prenex_612 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_prenex_612 4294967296) 2147483647))) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (+ (mod v_sep_~ret~0_BEFORE_RETURN_83 4294967296) (- 4294967296))) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_83 4294967296) 2147483647))) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= (mod v_sep_~ret~0_BEFORE_RETURN_84 4294967296) 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_sep_~ret~0_BEFORE_RETURN_84 4294967296) main_~ret5~0) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0))))) (and (not (= main_~ret~1 main_~ret5~0)) (exists ((v_prenex_611 Int) (v_prenex_612 Int) (v_sep_~ret~0_BEFORE_RETURN_84 Int) (v_sep_~ret~0_BEFORE_RETURN_83 Int)) (or (and (<= (mod v_prenex_611 4294967296) 2147483647) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (= main_~ret5~0 (mod v_prenex_611 4294967296))) (and (= (+ (mod v_prenex_612 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_prenex_612 4294967296) 2147483647))) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (= main_~ret5~0 (+ (mod v_sep_~ret~0_BEFORE_RETURN_83 4294967296) (- 4294967296))) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_83 4294967296) 2147483647))) (and (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= (mod v_sep_~ret~0_BEFORE_RETURN_84 4294967296) 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_sep_~ret~0_BEFORE_RETURN_84 4294967296) main_~ret5~0) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))))) [2019-10-13 23:20:53,416 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 129#(or (exists ((v_prenex_584 Int) (v_sep_~ret~0_BEFORE_RETURN_80 Int)) (or (and (= (mod v_prenex_584 4294967296) |main_#t~ret6|) (not (< main_~i~1 10)) (<= (mod v_prenex_584 4294967296) 2147483647)) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_80 4294967296) (- 4294967296)) |main_#t~ret6|) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_80 4294967296) 2147483647)) (not (< main_~i~1 10))))) (exists ((v_prenex_583 Int) (v_sep_~ret~0_BEFORE_RETURN_79 Int)) (or (and (= (+ (mod v_prenex_583 4294967296) (- 4294967296)) |main_#t~ret6|) (not (<= (mod v_prenex_583 4294967296) 2147483647)) (not (< main_~i~1 10))) (and (= (mod v_sep_~ret~0_BEFORE_RETURN_79 4294967296) |main_#t~ret6|) (<= (mod v_sep_~ret~0_BEFORE_RETURN_79 4294967296) 2147483647) (not (< main_~i~1 10)))))) [2019-10-13 23:20:53,416 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 433#true [2019-10-13 23:20:53,416 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 322#true [2019-10-13 23:20:53,417 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 596#true [2019-10-13 23:20:53,417 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 569#true [2019-10-13 23:20:55,850 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:55,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 11] total 23 [2019-10-13 23:20:55,851 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193182096] [2019-10-13 23:20:55,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 23:20:55,853 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:55,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 23:20:55,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=444, Unknown=1, NotChecked=0, Total=552 [2019-10-13 23:20:55,854 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 24 states. [2019-10-13 23:20:56,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:56,648 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2019-10-13 23:20:56,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 23:20:56,649 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 60 [2019-10-13 23:20:56,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:56,650 INFO L225 Difference]: With dead ends: 64 [2019-10-13 23:20:56,650 INFO L226 Difference]: Without dead ends: 40 [2019-10-13 23:20:56,652 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=292, Invalid=1429, Unknown=1, NotChecked=0, Total=1722 [2019-10-13 23:20:56,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-13 23:20:56,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-13 23:20:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-13 23:20:56,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2019-10-13 23:20:56,660 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 60 [2019-10-13 23:20:56,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:56,660 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2019-10-13 23:20:56,661 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 23:20:56,661 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2019-10-13 23:20:56,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-10-13 23:20:56,663 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:56,663 INFO L380 BasicCegarLoop]: trace histogram [30, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:56,867 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:56,867 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:56,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:56,868 INFO L82 PathProgramCache]: Analyzing trace with hash -303721663, now seen corresponding path program 5 times [2019-10-13 23:20:56,868 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:56,868 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413790021] [2019-10-13 23:20:56,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:56,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:56,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:20:57,131 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2019-10-13 23:20:57,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413790021] [2019-10-13 23:20:57,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573214156] [2019-10-13 23:20:57,132 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:57,307 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 23:20:57,307 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:20:57,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:20:57,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:20:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 246 proven. 1 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2019-10-13 23:20:57,332 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:20:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2019-10-13 23:20:57,358 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1152731368] [2019-10-13 23:20:57,361 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:20:57,361 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:20:57,362 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:20:57,362 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:20:57,362 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:20:57,382 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:20:58,688 INFO L199 IcfgInterpreter]: Interpreting procedure sep with input of size 1 for LOIs [2019-10-13 23:20:58,719 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:20:58,722 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:20:58,723 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:20:58,723 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 10 main_~i~1) (not (< main_~i~1 10))) [2019-10-13 23:20:58,723 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 601#(exists ((v_prenex_777 Int) (v_sep_~ret~0_BEFORE_RETURN_105 Int) (v_sep_~ret~0_BEFORE_RETURN_106 Int) (v_prenex_778 Int)) (or (and (not (<= (mod v_prenex_777 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (= main_~ret~1 (+ (mod v_prenex_777 4294967296) (- 4294967296))) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (mod v_prenex_778 4294967296)) (<= (mod v_prenex_778 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (<= main_~ret~1 2147483647) (<= (mod v_sep_~ret~0_BEFORE_RETURN_105 4294967296) 2147483647) (= main_~ret~1 (mod v_sep_~ret~0_BEFORE_RETURN_105 4294967296)) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_106 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (= main_~ret~1 (+ (mod v_sep_~ret~0_BEFORE_RETURN_106 4294967296) (- 4294967296))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:20:58,723 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 666#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:20:58,724 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 23:20:58,724 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 657#(<= 0 sep_~i~0) [2019-10-13 23:20:58,724 INFO L193 IcfgInterpreter]: Reachable states at location sepENTRY satisfy 610#true [2019-10-13 23:20:58,724 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:58,724 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (= 0 (select |old(#valid)| 0))) [2019-10-13 23:20:58,724 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 671#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:20:58,725 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 488#true [2019-10-13 23:20:58,725 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:20:58,725 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 531#(and (not (< main_~i~2 9)) (<= 9 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) [2019-10-13 23:20:58,725 INFO L193 IcfgInterpreter]: Reachable states at location sepEXIT satisfy 662#(and (not (< sep_~i~0 10)) (= |sep_#res| (ite (<= (mod sep_~ret~0 4294967296) 2147483647) (mod sep_~ret~0 4294967296) (+ (mod sep_~ret~0 4294967296) (- 4294967296)))) (<= 10 sep_~i~0) (<= 0 sep_~i~0)) [2019-10-13 23:20:58,725 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 243#(or (and (exists ((v_sep_~ret~0_BEFORE_RETURN_110 Int) (v_prenex_806 Int) (v_prenex_805 Int) (v_sep_~ret~0_BEFORE_RETURN_109 Int)) (or (and (= main_~ret5~0 (mod v_prenex_806 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_806 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_110 4294967296) 2147483647)) (= main_~ret5~0 (+ (mod v_sep_~ret~0_BEFORE_RETURN_110 4294967296) (- 4294967296))) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (mod v_prenex_805 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (<= (mod v_prenex_805 4294967296) 2147483647)) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_109 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 9)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_109 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_sep_~ret~0_BEFORE_RETURN_110 Int) (v_prenex_806 Int) (v_prenex_805 Int) (v_sep_~ret~0_BEFORE_RETURN_109 Int)) (or (and (= main_~ret5~0 (mod v_prenex_806 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (<= (mod v_prenex_806 4294967296) 2147483647) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_110 4294967296) 2147483647)) (= main_~ret5~0 (+ (mod v_sep_~ret~0_BEFORE_RETURN_110 4294967296) (- 4294967296))) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (= main_~ret5~0 (mod v_prenex_805 4294967296)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (<= (mod v_prenex_805 4294967296) 2147483647)) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_109 4294967296) (- 4294967296)) main_~ret5~0) (not (< main_~i~2 9)) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_109 4294967296) 2147483647)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))))) [2019-10-13 23:20:58,726 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 129#(or (exists ((v_prenex_777 Int) (v_sep_~ret~0_BEFORE_RETURN_105 Int)) (or (and (<= (mod v_sep_~ret~0_BEFORE_RETURN_105 4294967296) 2147483647) (= |main_#t~ret6| (mod v_sep_~ret~0_BEFORE_RETURN_105 4294967296)) (not (< main_~i~1 10))) (and (not (<= (mod v_prenex_777 4294967296) 2147483647)) (= (+ (mod v_prenex_777 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 10))))) (exists ((v_sep_~ret~0_BEFORE_RETURN_106 Int) (v_prenex_778 Int)) (or (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_106 4294967296) 2147483647)) (not (< main_~i~1 10)) (= |main_#t~ret6| (+ (mod v_sep_~ret~0_BEFORE_RETURN_106 4294967296) (- 4294967296)))) (and (= |main_#t~ret6| (mod v_prenex_778 4294967296)) (not (< main_~i~1 10)) (<= (mod v_prenex_778 4294967296) 2147483647))))) [2019-10-13 23:20:58,726 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 433#true [2019-10-13 23:20:58,726 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 322#true [2019-10-13 23:20:58,726 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 596#true [2019-10-13 23:20:58,727 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 569#true [2019-10-13 23:20:59,034 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:20:59,034 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 17 [2019-10-13 23:20:59,034 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674830772] [2019-10-13 23:20:59,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 23:20:59,035 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:20:59,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 23:20:59,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:20:59,036 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 18 states. [2019-10-13 23:20:59,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:20:59,646 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2019-10-13 23:20:59,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:20:59,646 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 65 [2019-10-13 23:20:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:20:59,648 INFO L225 Difference]: With dead ends: 61 [2019-10-13 23:20:59,648 INFO L226 Difference]: Without dead ends: 43 [2019-10-13 23:20:59,649 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2019-10-13 23:20:59,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-13 23:20:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-13 23:20:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-13 23:20:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2019-10-13 23:20:59,656 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 65 [2019-10-13 23:20:59,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:20:59,657 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2019-10-13 23:20:59,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 23:20:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2019-10-13 23:20:59,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-10-13 23:20:59,658 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:20:59,658 INFO L380 BasicCegarLoop]: trace histogram [30, 10, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:20:59,861 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:20:59,862 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:20:59,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:20:59,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1439118160, now seen corresponding path program 6 times [2019-10-13 23:20:59,863 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:20:59,864 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663663856] [2019-10-13 23:20:59,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:59,864 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:20:59,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:20:59,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:21:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2019-10-13 23:21:00,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663663856] [2019-10-13 23:21:00,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112212980] [2019-10-13 23:21:00,014 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:21:00,358 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 23:21:00,358 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 23:21:00,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 23:21:00,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:21:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 246 proven. 10 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2019-10-13 23:21:00,375 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:21:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2019-10-13 23:21:00,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1063405375] [2019-10-13 23:21:00,435 INFO L162 IcfgInterpreter]: Started Sifa with 19 locations of interest [2019-10-13 23:21:00,435 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:21:00,437 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:21:00,437 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:21:00,437 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:21:00,452 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 23:21:01,803 INFO L199 IcfgInterpreter]: Interpreting procedure sep with input of size 1 for LOIs [2019-10-13 23:21:01,832 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 23:21:01,834 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:21:01,835 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:21:01,835 INFO L193 IcfgInterpreter]: Reachable states at location L26-4 satisfy 73#(and (<= 10 main_~i~1) (not (< main_~i~1 10))) [2019-10-13 23:21:01,835 INFO L193 IcfgInterpreter]: Reachable states at location L33 satisfy 601#(exists ((v_sep_~ret~0_BEFORE_RETURN_131 Int) (v_sep_~ret~0_BEFORE_RETURN_132 Int) (v_prenex_972 Int) (v_prenex_971 Int)) (or (and (= main_~ret~1 (mod v_sep_~ret~0_BEFORE_RETURN_131 4294967296)) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_sep_~ret~0_BEFORE_RETURN_131 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_prenex_971 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (= main_~ret~1 (+ (mod v_prenex_971 4294967296) (- 4294967296))) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_132 4294967296) 2147483647)) (<= main_~ret~1 2147483647) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_132 4294967296) (- 4294967296)) main_~ret~1) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))) (and (= main_~ret~1 (mod v_prenex_972 4294967296)) (<= main_~ret~1 2147483647) (= main_~temp~0 (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 4))) (<= (mod v_prenex_972 4294967296) 2147483647) (not (< main_~i~1 10)) (<= 0 (+ main_~ret~1 2147483648))))) [2019-10-13 23:21:01,835 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 666#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 23:21:01,835 INFO L193 IcfgInterpreter]: Reachable states at location L26-3 satisfy 68#true [2019-10-13 23:21:01,836 INFO L193 IcfgInterpreter]: Reachable states at location L7-3 satisfy 657#(<= 0 sep_~i~0) [2019-10-13 23:21:01,836 INFO L193 IcfgInterpreter]: Reachable states at location sepENTRY satisfy 610#true [2019-10-13 23:21:01,836 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= 0 (select |#valid| 0)) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:21:01,836 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#(and (= 0 |#NULL.base|) (<= |#NULL.base| 0) (= |#valid| |old(#valid)|) (<= 0 |#NULL.base|) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |old(#length)| |#length|) (= 0 (select |old(#valid)| 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:21:01,836 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 671#(and (= |#valid| (store |old(#valid)| 0 0)) (= 0 |#NULL.base|) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 23:21:01,836 INFO L193 IcfgInterpreter]: Reachable states at location L39-1 satisfy 488#true [2019-10-13 23:21:01,837 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:21:01,837 INFO L193 IcfgInterpreter]: Reachable states at location L39 satisfy 531#(and (not (< main_~i~2 9)) (<= 9 main_~i~2) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) [2019-10-13 23:21:01,837 INFO L193 IcfgInterpreter]: Reachable states at location sepEXIT satisfy 662#(and (not (< sep_~i~0 10)) (= |sep_#res| (ite (<= (mod sep_~ret~0 4294967296) 2147483647) (mod sep_~ret~0 4294967296) (+ (mod sep_~ret~0 4294967296) (- 4294967296)))) (<= 10 sep_~i~0) (<= 0 sep_~i~0)) [2019-10-13 23:21:01,837 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 243#(or (and (exists ((v_sep_~ret~0_BEFORE_RETURN_135 Int) (v_sep_~ret~0_BEFORE_RETURN_136 Int) (v_prenex_1000 Int) (v_prenex_999 Int)) (or (and (not (<= (mod v_prenex_999 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (= (+ (mod v_prenex_999 4294967296) (- 4294967296)) main_~ret5~0)) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_136 4294967296) (- 4294967296)) main_~ret5~0) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_136 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (<= (mod v_sep_~ret~0_BEFORE_RETURN_135 4294967296) 2147483647) (not (< main_~i~2 9)) (= main_~ret5~0 (mod v_sep_~ret~0_BEFORE_RETURN_135 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (< main_~i~2 9)) (<= (mod v_prenex_1000 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_prenex_1000 4294967296) main_~ret5~0) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))) (not (= main_~ret~1 main_~ret5~0))) (and (not (= main_~ret~1 main_~ret2~0)) (exists ((v_sep_~ret~0_BEFORE_RETURN_135 Int) (v_sep_~ret~0_BEFORE_RETURN_136 Int) (v_prenex_1000 Int) (v_prenex_999 Int)) (or (and (not (<= (mod v_prenex_999 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0) (= (+ (mod v_prenex_999 4294967296) (- 4294967296)) main_~ret5~0)) (and (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_136 4294967296) (- 4294967296)) main_~ret5~0) (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_136 4294967296) 2147483647)) (not (< main_~i~2 9)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (<= (mod v_sep_~ret~0_BEFORE_RETURN_135 4294967296) 2147483647) (not (< main_~i~2 9)) (= main_~ret5~0 (mod v_sep_~ret~0_BEFORE_RETURN_135 4294967296)) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)) (and (not (< main_~i~2 9)) (<= (mod v_prenex_1000 4294967296) 2147483647) (<= main_~ret5~0 2147483647) (<= 0 (+ main_~ret5~0 2147483648)) (= (mod v_prenex_1000 4294967296) main_~ret5~0) (= (select (select |#memory_int| |main_~#x~0.base|) (+ |main_~#x~0.offset| 36)) main_~temp~0)))))) [2019-10-13 23:21:01,837 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 129#(or (exists ((v_sep_~ret~0_BEFORE_RETURN_131 Int) (v_prenex_971 Int)) (or (and (= |main_#t~ret6| (mod v_sep_~ret~0_BEFORE_RETURN_131 4294967296)) (<= (mod v_sep_~ret~0_BEFORE_RETURN_131 4294967296) 2147483647) (not (< main_~i~1 10))) (and (not (<= (mod v_prenex_971 4294967296) 2147483647)) (= (+ (mod v_prenex_971 4294967296) (- 4294967296)) |main_#t~ret6|) (not (< main_~i~1 10))))) (exists ((v_sep_~ret~0_BEFORE_RETURN_132 Int) (v_prenex_972 Int)) (or (and (not (<= (mod v_sep_~ret~0_BEFORE_RETURN_132 4294967296) 2147483647)) (not (< main_~i~1 10)) (= (+ (mod v_sep_~ret~0_BEFORE_RETURN_132 4294967296) (- 4294967296)) |main_#t~ret6|)) (and (= (mod v_prenex_972 4294967296) |main_#t~ret6|) (<= (mod v_prenex_972 4294967296) 2147483647) (not (< main_~i~1 10)))))) [2019-10-13 23:21:01,838 INFO L193 IcfgInterpreter]: Reachable states at location L41 satisfy 433#true [2019-10-13 23:21:01,838 INFO L193 IcfgInterpreter]: Reachable states at location L42 satisfy 322#true [2019-10-13 23:21:01,838 INFO L193 IcfgInterpreter]: Reachable states at location L33-1 satisfy 596#true [2019-10-13 23:21:01,838 INFO L193 IcfgInterpreter]: Reachable states at location L35-3 satisfy 569#true [2019-10-13 23:21:02,158 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 23:21:02,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 11] total 22 [2019-10-13 23:21:02,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454480741] [2019-10-13 23:21:02,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-13 23:21:02,160 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:21:02,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-13 23:21:02,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2019-10-13 23:21:02,161 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 23 states. [2019-10-13 23:21:02,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:21:02,987 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2019-10-13 23:21:02,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 23:21:02,987 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 68 [2019-10-13 23:21:02,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:21:02,990 INFO L225 Difference]: With dead ends: 66 [2019-10-13 23:21:02,990 INFO L226 Difference]: Without dead ends: 48 [2019-10-13 23:21:02,991 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=276, Invalid=1284, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 23:21:02,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-13 23:21:02,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-10-13 23:21:02,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-13 23:21:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2019-10-13 23:21:02,998 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 68 [2019-10-13 23:21:02,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:21:02,999 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2019-10-13 23:21:02,999 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-13 23:21:02,999 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2019-10-13 23:21:03,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-10-13 23:21:03,000 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:21:03,000 INFO L380 BasicCegarLoop]: trace histogram [30, 10, 9, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:21:03,212 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:21:03,213 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:21:03,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:21:03,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1172269761, now seen corresponding path program 7 times [2019-10-13 23:21:03,214 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:21:03,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634712688] [2019-10-13 23:21:03,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:03,215 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:21:03,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY