java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/array-examples/standard_vector_difference_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:36:38,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:36:38,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:36:38,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:36:38,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:36:38,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:36:38,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:36:38,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:36:38,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:36:38,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:36:38,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:36:38,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:36:38,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:36:38,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:36:38,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:36:38,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:36:38,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:36:38,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:36:38,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:36:38,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:36:38,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:36:38,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:36:38,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:36:38,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:36:38,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:36:38,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:36:38,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:36:38,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:36:38,113 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 21:36:38,132 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:36:38,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:36:38,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:36:38,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:36:38,136 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:36:38,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:36:38,136 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:36:38,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:36:38,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:36:38,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:36:38,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:36:38,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:36:38,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:36:38,138 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:36:38,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:36:38,138 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:36:38,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:36:38,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:36:38,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:36:38,139 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:36:38,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:36:38,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:36:38,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:36:38,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:36:38,141 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:36:38,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:36:38,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:36:38,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:36:38,142 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 21:36:38,445 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:36:38,460 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:36:38,463 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:36:38,465 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:36:38,465 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:36:38,466 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_vector_difference_ground.i [2019-10-13 21:36:38,534 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e484997/4360c6b13eaa41999a1cfa22d408eced/FLAG05b11beaa [2019-10-13 21:36:38,967 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:36:38,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_vector_difference_ground.i [2019-10-13 21:36:38,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e484997/4360c6b13eaa41999a1cfa22d408eced/FLAG05b11beaa [2019-10-13 21:36:39,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e484997/4360c6b13eaa41999a1cfa22d408eced [2019-10-13 21:36:39,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:36:39,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:36:39,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:36:39,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:36:39,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:36:39,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:36:39" (1/1) ... [2019-10-13 21:36:39,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ae0ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:39, skipping insertion in model container [2019-10-13 21:36:39,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:36:39" (1/1) ... [2019-10-13 21:36:39,414 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:36:39,430 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:36:39,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:36:39,594 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:36:39,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:36:39,630 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:36:39,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:39 WrapperNode [2019-10-13 21:36:39,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:36:39,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:36:39,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:36:39,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:36:39,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:39" (1/1) ... [2019-10-13 21:36:39,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:39" (1/1) ... [2019-10-13 21:36:39,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:39" (1/1) ... [2019-10-13 21:36:39,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:39" (1/1) ... [2019-10-13 21:36:39,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:39" (1/1) ... [2019-10-13 21:36:39,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:39" (1/1) ... [2019-10-13 21:36:39,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:39" (1/1) ... [2019-10-13 21:36:39,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:36:39,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:36:39,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:36:39,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:36:39,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:39" (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 21:36:39,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:36:39,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:36:39,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:36:39,817 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:36:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:36:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:36:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:36:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:36:39,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:36:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:36:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:36:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:36:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:36:39,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:36:40,165 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:36:40,166 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 21:36:40,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:36:40 BoogieIcfgContainer [2019-10-13 21:36:40,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:36:40,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:36:40,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:36:40,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:36:40,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:36:39" (1/3) ... [2019-10-13 21:36:40,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d77fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:36:40, skipping insertion in model container [2019-10-13 21:36:40,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:36:39" (2/3) ... [2019-10-13 21:36:40,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d77fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:36:40, skipping insertion in model container [2019-10-13 21:36:40,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:36:40" (3/3) ... [2019-10-13 21:36:40,175 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_vector_difference_ground.i [2019-10-13 21:36:40,184 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:36:40,191 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:36:40,200 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:36:40,221 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:36:40,222 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:36:40,222 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:36:40,222 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:36:40,222 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:36:40,222 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:36:40,222 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:36:40,222 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:36:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-13 21:36:40,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 21:36:40,242 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:40,243 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:40,245 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:40,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:40,251 INFO L82 PathProgramCache]: Analyzing trace with hash -830750246, now seen corresponding path program 1 times [2019-10-13 21:36:40,257 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:40,258 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089466129] [2019-10-13 21:36:40,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:40,258 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:40,258 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:40,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:36:40,434 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089466129] [2019-10-13 21:36:40,435 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:36:40,436 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:36:40,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640200487] [2019-10-13 21:36:40,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:36:40,441 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:36:40,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:36:40,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:36:40,459 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-10-13 21:36:40,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:40,511 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2019-10-13 21:36:40,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:36:40,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-13 21:36:40,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:40,523 INFO L225 Difference]: With dead ends: 34 [2019-10-13 21:36:40,523 INFO L226 Difference]: Without dead ends: 18 [2019-10-13 21:36:40,527 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 21:36:40,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-13 21:36:40,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-13 21:36:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-13 21:36:40,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-10-13 21:36:40,576 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2019-10-13 21:36:40,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:40,576 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-10-13 21:36:40,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:36:40,577 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-10-13 21:36:40,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 21:36:40,578 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:40,578 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:40,578 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:40,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:40,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1504950251, now seen corresponding path program 1 times [2019-10-13 21:36:40,579 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:40,580 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949101500] [2019-10-13 21:36:40,580 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:40,580 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:40,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:36:40,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949101500] [2019-10-13 21:36:40,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563761145] [2019-10-13 21:36:40,701 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 21:36:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:40,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:36:40,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:36:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:36:40,827 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:36:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:36:40,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1494266682] [2019-10-13 21:36:40,887 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-13 21:36:40,887 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:36:40,894 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:36:40,903 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:36:40,903 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:36:41,067 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:36:41,641 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2019-10-13 21:36:41,656 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:36:41,664 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:36:41,664 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:36:41,664 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 121#(and (exists ((|v_main_~#b~0.base_BEFORE_CALL_1| Int) (|v_main_~#a~0.offset_BEFORE_CALL_1| Int) (|v_main_~#b~0.offset_BEFORE_CALL_1| Int) (|v_main_~#c~0.base_BEFORE_CALL_1| Int) (v_prenex_6 Int) (v_prenex_4 Int) (v_prenex_5 Int) (v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (|v_main_~#c~0.offset_BEFORE_CALL_1| Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_5) v_prenex_4) (+ (select (select |#memory_int| v_prenex_6) v_prenex_2) (* (select (select |#memory_int| v_prenex_1) v_prenex_3) (- 1)))))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_1|) |v_main_~#c~0.offset_BEFORE_CALL_1|) (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) |v_main_~#a~0.offset_BEFORE_CALL_1|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_1|) |v_main_~#b~0.offset_BEFORE_CALL_1|) (- 1))))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:41,665 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 126#(and (exists ((|v_main_~#b~0.base_BEFORE_CALL_1| Int) (|v_main_~#a~0.offset_BEFORE_CALL_1| Int) (|v_main_~#b~0.offset_BEFORE_CALL_1| Int) (|v_main_~#c~0.base_BEFORE_CALL_1| Int) (v_prenex_6 Int) (v_prenex_4 Int) (v_prenex_5 Int) (v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (|v_main_~#c~0.offset_BEFORE_CALL_1| Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_5) v_prenex_4) (+ (select (select |#memory_int| v_prenex_6) v_prenex_2) (* (select (select |#memory_int| v_prenex_1) v_prenex_3) (- 1)))))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_1|) |v_main_~#c~0.offset_BEFORE_CALL_1|) (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) |v_main_~#a~0.offset_BEFORE_CALL_1|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_1|) |v_main_~#b~0.offset_BEFORE_CALL_1|) (- 1))))))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:41,666 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 135#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:36:41,666 INFO L193 IcfgInterpreter]: Reachable states at location L23 satisfy 111#(and (= |main_#t~mem6| (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~x~0 4) |main_~#a~0.offset|))) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= (select (select |#memory_int| |main_~#c~0.base|) (+ (* main_~x~0 4) |main_~#c~0.offset|)) |main_#t~mem8|) (not (< main_~i~0 100000)) (= (select (select |#memory_int| |main_~#b~0.base|) (+ (* main_~x~0 4) |main_~#b~0.offset|)) |main_#t~mem7|) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:36:41,666 INFO L193 IcfgInterpreter]: Reachable states at location L17-2 satisfy 101#true [2019-10-13 21:36:41,667 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 131#(and (exists ((|v_main_~#b~0.base_BEFORE_CALL_1| Int) (|v_main_~#a~0.offset_BEFORE_CALL_1| Int) (|v_main_~#b~0.offset_BEFORE_CALL_1| Int) (|v_main_~#c~0.base_BEFORE_CALL_1| Int) (v_prenex_6 Int) (v_prenex_4 Int) (v_prenex_5 Int) (v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (|v_main_~#c~0.offset_BEFORE_CALL_1| Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_5) v_prenex_4) (+ (select (select |#memory_int| v_prenex_6) v_prenex_2) (* (select (select |#memory_int| v_prenex_1) v_prenex_3) (- 1)))))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_1|) |v_main_~#c~0.offset_BEFORE_CALL_1|) (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) |v_main_~#a~0.offset_BEFORE_CALL_1|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_1|) |v_main_~#b~0.offset_BEFORE_CALL_1|) (- 1))))))) (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:41,667 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 21:36:41,667 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 21:36:41,667 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 140#(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 21:36:41,668 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:36:41,668 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 72#true [2019-10-13 21:36:41,668 INFO L193 IcfgInterpreter]: Reachable states at location L22-3 satisfy 106#(and (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:36:41,669 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 116#(exists ((|v_main_~#b~0.base_BEFORE_CALL_1| Int) (|v_main_~#a~0.offset_BEFORE_CALL_1| Int) (|v_main_~#b~0.offset_BEFORE_CALL_1| Int) (|v_main_~#c~0.base_BEFORE_CALL_1| Int) (v_prenex_6 Int) (v_prenex_4 Int) (v_prenex_5 Int) (v_prenex_2 Int) (v_prenex_3 Int) (v_prenex_1 Int) (|v_main_~#c~0.offset_BEFORE_CALL_1| Int) (|v_main_~#a~0.base_BEFORE_CALL_1| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_5) v_prenex_4) (+ (select (select |#memory_int| v_prenex_6) v_prenex_2) (* (select (select |#memory_int| v_prenex_1) v_prenex_3) (- 1)))))) (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_1|) |v_main_~#c~0.offset_BEFORE_CALL_1|) (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_1|) |v_main_~#a~0.offset_BEFORE_CALL_1|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_1|) |v_main_~#b~0.offset_BEFORE_CALL_1|) (- 1))))))) [2019-10-13 21:36:42,050 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:36:42,050 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 10] total 16 [2019-10-13 21:36:42,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691100118] [2019-10-13 21:36:42,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:36:42,053 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:36:42,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:36:42,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:36:42,055 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 16 states. [2019-10-13 21:36:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:43,584 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2019-10-13 21:36:43,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 21:36:43,589 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 14 [2019-10-13 21:36:43,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:43,590 INFO L225 Difference]: With dead ends: 44 [2019-10-13 21:36:43,590 INFO L226 Difference]: Without dead ends: 33 [2019-10-13 21:36:43,592 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:36:43,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-13 21:36:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2019-10-13 21:36:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-13 21:36:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2019-10-13 21:36:43,600 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2019-10-13 21:36:43,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:43,600 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2019-10-13 21:36:43,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:36:43,601 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2019-10-13 21:36:43,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 21:36:43,602 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:43,602 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:43,805 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:36:43,805 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:43,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:43,806 INFO L82 PathProgramCache]: Analyzing trace with hash -578674534, now seen corresponding path program 2 times [2019-10-13 21:36:43,806 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:43,806 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882132713] [2019-10-13 21:36:43,807 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:43,807 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:43,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:43,910 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:36:43,910 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882132713] [2019-10-13 21:36:43,911 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236906428] [2019-10-13 21:36:43,911 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 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 21:36:43,973 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 21:36:43,973 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:36:43,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:36:43,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:36:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:36:43,993 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:36:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:36:44,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [292391686] [2019-10-13 21:36:44,062 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-13 21:36:44,062 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:36:44,063 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:36:44,063 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:36:44,064 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:36:44,115 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:36:44,512 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2019-10-13 21:36:44,535 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:36:44,543 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:36:44,544 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:36:44,544 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 121#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (|v_main_~#b~0.base_BEFORE_CALL_2| Int) (|v_main_~#a~0.offset_BEFORE_CALL_2| Int) (v_prenex_12 Int) (|v_main_~#c~0.offset_BEFORE_CALL_2| Int) (v_prenex_11 Int) (|v_main_~#b~0.offset_BEFORE_CALL_2| Int) (|v_main_~#c~0.base_BEFORE_CALL_2| Int) (v_prenex_10 Int) (v_prenex_8 Int) (v_prenex_9 Int) (v_prenex_7 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) |v_main_~#a~0.offset_BEFORE_CALL_2|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_2|) |v_main_~#b~0.offset_BEFORE_CALL_2|) (- 1))) (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_2|) |v_main_~#c~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (+ (select (select |#memory_int| v_prenex_7) v_prenex_9) (* (select (select |#memory_int| v_prenex_8) v_prenex_11) (- 1))) (select (select |#memory_int| v_prenex_12) v_prenex_10)))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:44,544 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 126#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (|v_main_~#b~0.base_BEFORE_CALL_2| Int) (|v_main_~#a~0.offset_BEFORE_CALL_2| Int) (v_prenex_12 Int) (|v_main_~#c~0.offset_BEFORE_CALL_2| Int) (v_prenex_11 Int) (|v_main_~#b~0.offset_BEFORE_CALL_2| Int) (|v_main_~#c~0.base_BEFORE_CALL_2| Int) (v_prenex_10 Int) (v_prenex_8 Int) (v_prenex_9 Int) (v_prenex_7 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) |v_main_~#a~0.offset_BEFORE_CALL_2|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_2|) |v_main_~#b~0.offset_BEFORE_CALL_2|) (- 1))) (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_2|) |v_main_~#c~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (+ (select (select |#memory_int| v_prenex_7) v_prenex_9) (* (select (select |#memory_int| v_prenex_8) v_prenex_11) (- 1))) (select (select |#memory_int| v_prenex_12) v_prenex_10)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:44,548 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 135#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:36:44,549 INFO L193 IcfgInterpreter]: Reachable states at location L23 satisfy 111#(and (= |main_#t~mem6| (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~x~0 4) |main_~#a~0.offset|))) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= (select (select |#memory_int| |main_~#c~0.base|) (+ (* main_~x~0 4) |main_~#c~0.offset|)) |main_#t~mem8|) (not (< main_~i~0 100000)) (= (select (select |#memory_int| |main_~#b~0.base|) (+ (* main_~x~0 4) |main_~#b~0.offset|)) |main_#t~mem7|) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:36:44,549 INFO L193 IcfgInterpreter]: Reachable states at location L17-2 satisfy 101#true [2019-10-13 21:36:44,550 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 131#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (|v_main_~#b~0.base_BEFORE_CALL_2| Int) (|v_main_~#a~0.offset_BEFORE_CALL_2| Int) (v_prenex_12 Int) (|v_main_~#c~0.offset_BEFORE_CALL_2| Int) (v_prenex_11 Int) (|v_main_~#b~0.offset_BEFORE_CALL_2| Int) (|v_main_~#c~0.base_BEFORE_CALL_2| Int) (v_prenex_10 Int) (v_prenex_8 Int) (v_prenex_9 Int) (v_prenex_7 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) |v_main_~#a~0.offset_BEFORE_CALL_2|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_2|) |v_main_~#b~0.offset_BEFORE_CALL_2|) (- 1))) (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_2|) |v_main_~#c~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (+ (select (select |#memory_int| v_prenex_7) v_prenex_9) (* (select (select |#memory_int| v_prenex_8) v_prenex_11) (- 1))) (select (select |#memory_int| v_prenex_12) v_prenex_10)))))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:44,550 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 21:36:44,550 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 21:36:44,551 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 140#(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 21:36:44,551 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:36:44,552 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 72#true [2019-10-13 21:36:44,552 INFO L193 IcfgInterpreter]: Reachable states at location L22-3 satisfy 106#(and (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:36:44,552 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 116#(exists ((|v_main_~#a~0.base_BEFORE_CALL_2| Int) (|v_main_~#b~0.base_BEFORE_CALL_2| Int) (|v_main_~#a~0.offset_BEFORE_CALL_2| Int) (v_prenex_12 Int) (|v_main_~#c~0.offset_BEFORE_CALL_2| Int) (v_prenex_11 Int) (|v_main_~#b~0.offset_BEFORE_CALL_2| Int) (|v_main_~#c~0.base_BEFORE_CALL_2| Int) (v_prenex_10 Int) (v_prenex_8 Int) (v_prenex_9 Int) (v_prenex_7 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_2|) |v_main_~#a~0.offset_BEFORE_CALL_2|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_2|) |v_main_~#b~0.offset_BEFORE_CALL_2|) (- 1))) (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_2|) |v_main_~#c~0.offset_BEFORE_CALL_2|))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (+ (select (select |#memory_int| v_prenex_7) v_prenex_9) (* (select (select |#memory_int| v_prenex_8) v_prenex_11) (- 1))) (select (select |#memory_int| v_prenex_12) v_prenex_10)))))) [2019-10-13 21:36:44,951 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:36:44,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 10] total 22 [2019-10-13 21:36:44,952 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332179416] [2019-10-13 21:36:44,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 21:36:44,953 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:36:44,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 21:36:44,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:36:44,955 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 22 states. [2019-10-13 21:36:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:46,615 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2019-10-13 21:36:46,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 21:36:46,616 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 20 [2019-10-13 21:36:46,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:46,617 INFO L225 Difference]: With dead ends: 59 [2019-10-13 21:36:46,617 INFO L226 Difference]: Without dead ends: 45 [2019-10-13 21:36:46,618 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=280, Invalid=1126, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:36:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-13 21:36:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2019-10-13 21:36:46,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-13 21:36:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-10-13 21:36:46,628 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 20 [2019-10-13 21:36:46,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:46,629 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-10-13 21:36:46,629 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-13 21:36:46,629 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-10-13 21:36:46,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-13 21:36:46,630 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:46,630 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:46,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:36:46,835 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:46,835 INFO L82 PathProgramCache]: Analyzing trace with hash 642400954, now seen corresponding path program 3 times [2019-10-13 21:36:46,835 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:46,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656578174] [2019-10-13 21:36:46,836 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:46,836 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:46,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:36:47,129 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656578174] [2019-10-13 21:36:47,130 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126874600] [2019-10-13 21:36:47,130 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 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 21:36:47,218 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:36:47,219 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:36:47,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 21:36:47,224 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:36:47,244 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:36:47,245 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:36:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:36:47,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1370660004] [2019-10-13 21:36:47,489 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-13 21:36:47,489 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:36:47,489 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:36:47,490 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:36:47,490 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:36:47,527 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:36:47,860 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2019-10-13 21:36:47,868 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:36:47,872 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:36:47,873 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:36:47,873 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 121#(and (exists ((v_prenex_16 Int) (v_prenex_15 Int) (v_prenex_18 Int) (|v_main_~#a~0.base_BEFORE_CALL_3| Int) (v_prenex_17 Int) (|v_main_~#c~0.offset_BEFORE_CALL_3| Int) (|v_main_~#a~0.offset_BEFORE_CALL_3| Int) (|v_main_~#b~0.offset_BEFORE_CALL_3| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#c~0.base_BEFORE_CALL_3| Int) (|v_main_~#b~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_3|) |v_main_~#c~0.offset_BEFORE_CALL_3|) (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) |v_main_~#a~0.offset_BEFORE_CALL_3|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_3|) |v_main_~#b~0.offset_BEFORE_CALL_3|) (- 1))))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_17) v_prenex_14) (+ (select (select |#memory_int| v_prenex_13) v_prenex_15) (* (select (select |#memory_int| v_prenex_18) v_prenex_16) (- 1)))))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:47,873 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 126#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_16 Int) (v_prenex_15 Int) (v_prenex_18 Int) (|v_main_~#a~0.base_BEFORE_CALL_3| Int) (v_prenex_17 Int) (|v_main_~#c~0.offset_BEFORE_CALL_3| Int) (|v_main_~#a~0.offset_BEFORE_CALL_3| Int) (|v_main_~#b~0.offset_BEFORE_CALL_3| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#c~0.base_BEFORE_CALL_3| Int) (|v_main_~#b~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_3|) |v_main_~#c~0.offset_BEFORE_CALL_3|) (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) |v_main_~#a~0.offset_BEFORE_CALL_3|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_3|) |v_main_~#b~0.offset_BEFORE_CALL_3|) (- 1))))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_17) v_prenex_14) (+ (select (select |#memory_int| v_prenex_13) v_prenex_15) (* (select (select |#memory_int| v_prenex_18) v_prenex_16) (- 1)))))))) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:47,874 INFO L193 IcfgInterpreter]: Reachable states at location L23 satisfy 111#(and (= |main_#t~mem6| (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~x~0 4) |main_~#a~0.offset|))) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= (select (select |#memory_int| |main_~#c~0.base|) (+ (* main_~x~0 4) |main_~#c~0.offset|)) |main_#t~mem8|) (not (< main_~i~0 100000)) (= (select (select |#memory_int| |main_~#b~0.base|) (+ (* main_~x~0 4) |main_~#b~0.offset|)) |main_#t~mem7|) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:36:47,874 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 135#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:36:47,874 INFO L193 IcfgInterpreter]: Reachable states at location L17-2 satisfy 101#true [2019-10-13 21:36:47,874 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 131#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_16 Int) (v_prenex_15 Int) (v_prenex_18 Int) (|v_main_~#a~0.base_BEFORE_CALL_3| Int) (v_prenex_17 Int) (|v_main_~#c~0.offset_BEFORE_CALL_3| Int) (|v_main_~#a~0.offset_BEFORE_CALL_3| Int) (|v_main_~#b~0.offset_BEFORE_CALL_3| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#c~0.base_BEFORE_CALL_3| Int) (|v_main_~#b~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_3|) |v_main_~#c~0.offset_BEFORE_CALL_3|) (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) |v_main_~#a~0.offset_BEFORE_CALL_3|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_3|) |v_main_~#b~0.offset_BEFORE_CALL_3|) (- 1))))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_17) v_prenex_14) (+ (select (select |#memory_int| v_prenex_13) v_prenex_15) (* (select (select |#memory_int| v_prenex_18) v_prenex_16) (- 1)))))))) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:47,875 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 21:36:47,875 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 21:36:47,875 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 140#(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 21:36:47,875 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:36:47,876 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 72#true [2019-10-13 21:36:47,876 INFO L193 IcfgInterpreter]: Reachable states at location L22-3 satisfy 106#(and (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:36:47,876 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 116#(exists ((v_prenex_16 Int) (v_prenex_15 Int) (v_prenex_18 Int) (|v_main_~#a~0.base_BEFORE_CALL_3| Int) (v_prenex_17 Int) (|v_main_~#c~0.offset_BEFORE_CALL_3| Int) (|v_main_~#a~0.offset_BEFORE_CALL_3| Int) (|v_main_~#b~0.offset_BEFORE_CALL_3| Int) (v_prenex_14 Int) (v_prenex_13 Int) (|v_main_~#c~0.base_BEFORE_CALL_3| Int) (|v_main_~#b~0.base_BEFORE_CALL_3| Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_3|) |v_main_~#c~0.offset_BEFORE_CALL_3|) (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_3|) |v_main_~#a~0.offset_BEFORE_CALL_3|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_3|) |v_main_~#b~0.offset_BEFORE_CALL_3|) (- 1))))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_17) v_prenex_14) (+ (select (select |#memory_int| v_prenex_13) v_prenex_15) (* (select (select |#memory_int| v_prenex_18) v_prenex_16) (- 1)))))))) [2019-10-13 21:36:48,228 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:36:48,229 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 10] total 34 [2019-10-13 21:36:48,229 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542345812] [2019-10-13 21:36:48,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-10-13 21:36:48,231 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:36:48,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-10-13 21:36:48,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=797, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:36:48,233 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 34 states. [2019-10-13 21:36:50,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:50,900 INFO L93 Difference]: Finished difference Result 89 states and 116 transitions. [2019-10-13 21:36:50,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-10-13 21:36:50,900 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 32 [2019-10-13 21:36:50,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:50,901 INFO L225 Difference]: With dead ends: 89 [2019-10-13 21:36:50,901 INFO L226 Difference]: Without dead ends: 69 [2019-10-13 21:36:50,903 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 926 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=922, Invalid=2860, Unknown=0, NotChecked=0, Total=3782 [2019-10-13 21:36:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-10-13 21:36:50,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2019-10-13 21:36:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-10-13 21:36:50,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2019-10-13 21:36:50,916 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 32 [2019-10-13 21:36:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:50,917 INFO L462 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2019-10-13 21:36:50,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 34 states. [2019-10-13 21:36:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2019-10-13 21:36:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-13 21:36:50,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:50,919 INFO L380 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:51,122 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:36:51,123 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:51,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:51,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1898852614, now seen corresponding path program 4 times [2019-10-13 21:36:51,124 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:51,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547613631] [2019-10-13 21:36:51,125 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:51,125 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:51,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:51,796 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 21:36:51,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547613631] [2019-10-13 21:36:51,797 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696523861] [2019-10-13 21:36:51,797 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 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 21:36:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:36:51,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 24 conjunts are in the unsatisfiable core [2019-10-13 21:36:51,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:36:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 21:36:51,955 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:36:52,947 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2019-10-13 21:36:52,948 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2128005206] [2019-10-13 21:36:52,949 INFO L162 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-10-13 21:36:52,949 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:36:52,950 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:36:52,950 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:36:52,950 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:36:52,974 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:36:53,275 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 42 for LOIs [2019-10-13 21:36:53,285 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:36:53,291 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:36:53,291 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:36:53,291 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 121#(and (exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (|v_main_~#a~0.offset_BEFORE_CALL_4| Int) (|v_main_~#b~0.offset_BEFORE_CALL_4| Int) (v_prenex_23 Int) (v_prenex_22 Int) (|v_main_~#c~0.offset_BEFORE_CALL_4| Int) (v_prenex_24 Int) (v_prenex_21 Int) (v_prenex_20 Int) (|v_main_~#c~0.base_BEFORE_CALL_4| Int) (|v_main_~#b~0.base_BEFORE_CALL_4| Int) (v_prenex_19 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_4|) |v_main_~#c~0.offset_BEFORE_CALL_4|) (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) |v_main_~#a~0.offset_BEFORE_CALL_4|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_4|) |v_main_~#b~0.offset_BEFORE_CALL_4|) (- 1))))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_22) v_prenex_23) (+ (select (select |#memory_int| v_prenex_19) v_prenex_20) (* (select (select |#memory_int| v_prenex_24) v_prenex_21) (- 1)))))))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:53,292 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 126#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (|v_main_~#a~0.offset_BEFORE_CALL_4| Int) (|v_main_~#b~0.offset_BEFORE_CALL_4| Int) (v_prenex_23 Int) (v_prenex_22 Int) (|v_main_~#c~0.offset_BEFORE_CALL_4| Int) (v_prenex_24 Int) (v_prenex_21 Int) (v_prenex_20 Int) (|v_main_~#c~0.base_BEFORE_CALL_4| Int) (|v_main_~#b~0.base_BEFORE_CALL_4| Int) (v_prenex_19 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_4|) |v_main_~#c~0.offset_BEFORE_CALL_4|) (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) |v_main_~#a~0.offset_BEFORE_CALL_4|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_4|) |v_main_~#b~0.offset_BEFORE_CALL_4|) (- 1))))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_22) v_prenex_23) (+ (select (select |#memory_int| v_prenex_19) v_prenex_20) (* (select (select |#memory_int| v_prenex_24) v_prenex_21) (- 1)))))))) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:53,292 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 135#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:36:53,292 INFO L193 IcfgInterpreter]: Reachable states at location L23 satisfy 111#(and (= |main_#t~mem6| (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~x~0 4) |main_~#a~0.offset|))) (< main_~x~0 100000) (= main_~x~0 0) (<= 100000 main_~i~0) (= (select (select |#memory_int| |main_~#c~0.base|) (+ (* main_~x~0 4) |main_~#c~0.offset|)) |main_#t~mem8|) (not (< main_~i~0 100000)) (= (select (select |#memory_int| |main_~#b~0.base|) (+ (* main_~x~0 4) |main_~#b~0.offset|)) |main_#t~mem7|) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:36:53,293 INFO L193 IcfgInterpreter]: Reachable states at location L17-2 satisfy 101#true [2019-10-13 21:36:53,293 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 131#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (|v_main_~#a~0.offset_BEFORE_CALL_4| Int) (|v_main_~#b~0.offset_BEFORE_CALL_4| Int) (v_prenex_23 Int) (v_prenex_22 Int) (|v_main_~#c~0.offset_BEFORE_CALL_4| Int) (v_prenex_24 Int) (v_prenex_21 Int) (v_prenex_20 Int) (|v_main_~#c~0.base_BEFORE_CALL_4| Int) (|v_main_~#b~0.base_BEFORE_CALL_4| Int) (v_prenex_19 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_4|) |v_main_~#c~0.offset_BEFORE_CALL_4|) (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) |v_main_~#a~0.offset_BEFORE_CALL_4|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_4|) |v_main_~#b~0.offset_BEFORE_CALL_4|) (- 1))))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_22) v_prenex_23) (+ (select (select |#memory_int| v_prenex_19) v_prenex_20) (* (select (select |#memory_int| v_prenex_24) v_prenex_21) (- 1)))))))) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:36:53,293 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 21:36:53,294 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 21:36:53,294 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 140#(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 21:36:53,294 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:36:53,294 INFO L193 IcfgInterpreter]: Reachable states at location L11-3 satisfy 72#true [2019-10-13 21:36:53,294 INFO L193 IcfgInterpreter]: Reachable states at location L22-3 satisfy 106#(and (= main_~x~0 0) (<= 100000 main_~i~0) (not (< main_~i~0 100000)) (<= main_~x~0 0) (<= 0 main_~x~0)) [2019-10-13 21:36:53,295 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 116#(exists ((|v_main_~#a~0.base_BEFORE_CALL_4| Int) (|v_main_~#a~0.offset_BEFORE_CALL_4| Int) (|v_main_~#b~0.offset_BEFORE_CALL_4| Int) (v_prenex_23 Int) (v_prenex_22 Int) (|v_main_~#c~0.offset_BEFORE_CALL_4| Int) (v_prenex_24 Int) (v_prenex_21 Int) (v_prenex_20 Int) (|v_main_~#c~0.base_BEFORE_CALL_4| Int) (|v_main_~#b~0.base_BEFORE_CALL_4| Int) (v_prenex_19 Int)) (or (and (= |__VERIFIER_assert_#in~cond| 1) (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_4|) |v_main_~#c~0.offset_BEFORE_CALL_4|) (+ (select (select |#memory_int| |v_main_~#a~0.base_BEFORE_CALL_4|) |v_main_~#a~0.offset_BEFORE_CALL_4|) (* (select (select |#memory_int| |v_main_~#b~0.base_BEFORE_CALL_4|) |v_main_~#b~0.offset_BEFORE_CALL_4|) (- 1))))) (and (= |__VERIFIER_assert_#in~cond| 0) (not (= (select (select |#memory_int| v_prenex_22) v_prenex_23) (+ (select (select |#memory_int| v_prenex_19) v_prenex_20) (* (select (select |#memory_int| v_prenex_24) v_prenex_21) (- 1)))))))) [2019-10-13 21:36:53,972 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:36:53,972 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 10] total 58 [2019-10-13 21:36:53,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022521232] [2019-10-13 21:36:53,973 INFO L442 AbstractCegarLoop]: Interpolant automaton has 58 states [2019-10-13 21:36:53,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:36:53,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2019-10-13 21:36:53,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1201, Invalid=2105, Unknown=0, NotChecked=0, Total=3306 [2019-10-13 21:36:53,976 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand 58 states. [2019-10-13 21:36:58,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:36:58,167 INFO L93 Difference]: Finished difference Result 149 states and 200 transitions. [2019-10-13 21:36:58,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-10-13 21:36:58,168 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 56 [2019-10-13 21:36:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:36:58,170 INFO L225 Difference]: With dead ends: 149 [2019-10-13 21:36:58,170 INFO L226 Difference]: Without dead ends: 117 [2019-10-13 21:36:58,174 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2600 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3502, Invalid=8488, Unknown=0, NotChecked=0, Total=11990 [2019-10-13 21:36:58,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2019-10-13 21:36:58,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2019-10-13 21:36:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-10-13 21:36:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2019-10-13 21:36:58,191 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 56 [2019-10-13 21:36:58,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:36:58,192 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2019-10-13 21:36:58,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 58 states. [2019-10-13 21:36:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2019-10-13 21:36:58,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-10-13 21:36:58,196 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:36:58,196 INFO L380 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:36:58,410 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:36:58,411 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:36:58,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:36:58,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1092221062, now seen corresponding path program 5 times [2019-10-13 21:36:58,412 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:36:58,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420376457] [2019-10-13 21:36:58,412 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:58,412 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:36:58,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:36:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 1081 trivial. 0 not checked. [2019-10-13 21:37:00,290 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420376457] [2019-10-13 21:37:00,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876923653] [2019-10-13 21:37:00,291 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 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