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-industry-pattern/array_single_elem_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:37:17,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:37:17,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:37:17,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:37:17,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:37:17,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:37:17,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:37:17,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:37:17,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:37:17,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:37:17,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:37:17,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:37:17,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:37:17,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:37:17,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:37:17,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:37:17,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:37:17,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:37:17,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:37:17,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:37:17,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:37:17,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:37:17,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:37:17,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:37:17,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:37:17,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:37:17,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:37:17,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:37:17,812 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 21:37:17,826 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:37:17,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:37:17,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:37:17,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:37:17,828 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:37:17,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:37:17,829 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:37:17,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:37:17,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:37:17,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:37:17,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:37:17,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:37:17,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:37:17,830 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:37:17,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:37:17,831 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:37:17,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:37:17,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:37:17,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:37:17,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:37:17,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:37:17,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:37:17,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:37:17,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:37:17,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:37:17,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:37:17,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:37:17,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:37:17,833 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 21:37:18,136 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:37:18,151 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:37:18,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:37:18,157 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:37:18,157 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:37:18,158 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_single_elem_init.i [2019-10-13 21:37:18,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee8d434c5/6a4316ba44d442939d854547aba5ecfa/FLAG685ce0f15 [2019-10-13 21:37:18,696 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:37:18,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_single_elem_init.i [2019-10-13 21:37:18,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee8d434c5/6a4316ba44d442939d854547aba5ecfa/FLAG685ce0f15 [2019-10-13 21:37:19,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee8d434c5/6a4316ba44d442939d854547aba5ecfa [2019-10-13 21:37:19,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:37:19,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:37:19,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:37:19,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:37:19,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:37:19,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:37:19" (1/1) ... [2019-10-13 21:37:19,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9690e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:19, skipping insertion in model container [2019-10-13 21:37:19,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:37:19" (1/1) ... [2019-10-13 21:37:19,089 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:37:19,109 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:37:19,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:37:19,289 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:37:19,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:37:19,416 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:37:19,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:19 WrapperNode [2019-10-13 21:37:19,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:37:19,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:37:19,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:37:19,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:37:19,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:19" (1/1) ... [2019-10-13 21:37:19,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:19" (1/1) ... [2019-10-13 21:37:19,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:19" (1/1) ... [2019-10-13 21:37:19,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:19" (1/1) ... [2019-10-13 21:37:19,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:19" (1/1) ... [2019-10-13 21:37:19,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:19" (1/1) ... [2019-10-13 21:37:19,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:19" (1/1) ... [2019-10-13 21:37:19,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:37:19,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:37:19,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:37:19,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:37:19,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:19" (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 21:37:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:37:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:37:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 21:37:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:37:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:37:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 21:37:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:37:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:37:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:37:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:37:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:37:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:37:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:37:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:37:19,982 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:37:19,982 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 21:37:19,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:37:19 BoogieIcfgContainer [2019-10-13 21:37:19,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:37:19,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:37:19,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:37:19,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:37:19,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:37:19" (1/3) ... [2019-10-13 21:37:19,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e926d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:37:19, skipping insertion in model container [2019-10-13 21:37:19,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:37:19" (2/3) ... [2019-10-13 21:37:19,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e926d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:37:19, skipping insertion in model container [2019-10-13 21:37:19,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:37:19" (3/3) ... [2019-10-13 21:37:19,991 INFO L109 eAbstractionObserver]: Analyzing ICFG array_single_elem_init.i [2019-10-13 21:37:20,001 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:37:20,010 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:37:20,022 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:37:20,055 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:37:20,055 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:37:20,055 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:37:20,055 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:37:20,055 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:37:20,056 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:37:20,056 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:37:20,056 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:37:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-10-13 21:37:20,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 21:37:20,077 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:20,078 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:20,080 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:20,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:20,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1264123479, now seen corresponding path program 1 times [2019-10-13 21:37:20,091 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:20,092 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92760639] [2019-10-13 21:37:20,092 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:20,092 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:20,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:20,265 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 21:37:20,266 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92760639] [2019-10-13 21:37:20,267 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:37:20,268 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:37:20,268 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339173648] [2019-10-13 21:37:20,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:37:20,276 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:20,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:37:20,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:37:20,295 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2019-10-13 21:37:20,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:20,363 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2019-10-13 21:37:20,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:37:20,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2019-10-13 21:37:20,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:20,375 INFO L225 Difference]: With dead ends: 38 [2019-10-13 21:37:20,375 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 21:37:20,379 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 21:37:20,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 21:37:20,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-10-13 21:37:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-13 21:37:20,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-10-13 21:37:20,422 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2019-10-13 21:37:20,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:20,422 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-10-13 21:37:20,422 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:37:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-10-13 21:37:20,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 21:37:20,423 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:20,424 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:20,424 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:20,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:20,425 INFO L82 PathProgramCache]: Analyzing trace with hash -392956526, now seen corresponding path program 1 times [2019-10-13 21:37:20,425 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:20,426 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781355507] [2019-10-13 21:37:20,426 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:20,426 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:20,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 21:37:20,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781355507] [2019-10-13 21:37:20,527 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146278455] [2019-10-13 21:37:20,527 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 21:37:20,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:20,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 21:37:20,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:20,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 21:37:20,616 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 21:37:20,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1561566211] [2019-10-13 21:37:20,689 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:37:20,690 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:20,697 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:20,705 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:20,706 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:20,927 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:37:21,462 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 201 [2019-10-13 21:37:21,580 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:21,691 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-13 21:37:21,716 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:21,830 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2019-10-13 21:37:21,874 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:21,978 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-10-13 21:37:22,692 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:22,722 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:22,887 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2019-10-13 21:37:22,914 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:23,383 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-13 21:37:23,395 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:23,400 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:23,400 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:23,401 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 216#(and (exists ((v_prenex_11 Int) (|v_main_~#c~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= 0 (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_1|) 60000))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| v_prenex_11) 60000)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:23,401 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 221#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_11 Int) (|v_main_~#c~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= 0 (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_1|) 60000))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| v_prenex_11) 60000)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:23,401 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 230#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:23,402 INFO L193 IcfgInterpreter]: Reachable states at location L34 satisfy 197#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (= |main_~#c~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (= |#NULL.base| 0) (< main_~i~0 100000) (= |main_~#c~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0))) (or (and (<= 0 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= main_~i~0 100000) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 1 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= main_~i~0 100000) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:23,402 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 202#(and (= |#NULL.base| 0) (< main_~i~0 100000) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (= main_~i~0 15000) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 15000 main_~i~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 1 main_~i~0) (<= |main_~#c~0.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (<= main_~i~0 15000) (= (select (select |#memory_int| |main_~#c~0.base|) (+ |main_~#c~0.offset| (* main_~i~0 4))) |main_#t~mem5|) (= |#NULL.offset| 0) (<= 0 |main_~#c~0.offset|) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:23,403 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 226#(and (<= __VERIFIER_assert_~cond 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0) (exists ((v_prenex_11 Int) (|v_main_~#c~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= 0 (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_1|) 60000))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| v_prenex_11) 60000)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= 0 __VERIFIER_assert_~cond) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:23,403 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 21:37:23,403 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 21:37:23,403 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 235#(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 21:37:23,404 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:23,404 INFO L193 IcfgInterpreter]: Reachable states at location L10-3 satisfy 115#(and (or (and (= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= 0 |#NULL.base|) (= |main_~#c~0.offset| 0) (not (= |main_~#b~0.base| 0)) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |main_~#b~0.offset| 0) (= (store (store (store |old(#length)| |main_~#a~0.base| 400000) |main_~#b~0.base| 400000) |main_~#c~0.base| 400000) |#length|) (= |main_~#a~0.offset| 0) (< |main_~#b~0.base| |#StackHeapBarrier|) (not (= 0 |main_~#c~0.base|)) (= (select (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1) |main_~#c~0.base|) 0) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (< |main_~#c~0.base| |#StackHeapBarrier|) (= (select (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base|) 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |#valid| (store (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1) |main_~#c~0.base| 1)) (= main_~i~0 0))) (<= 0 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:23,404 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 179#(and (or (and (= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (<= 1 main_~i~0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (= 1 (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| 60000))) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= main_~i~0 0) (= |main_~#a~0.offset| 0))) (or (and (<= 0 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= main_~i~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 1 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:23,405 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 211#(exists ((v_prenex_11 Int) (|v_main_~#c~0.base_BEFORE_CALL_1| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (not (= 0 (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_1|) 60000))) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (= 0 (select (select |#memory_int| v_prenex_11) 60000)) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:23,405 INFO L193 IcfgInterpreter]: Reachable states at location L32-2 satisfy 174#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#c~0.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |main_~#c~0.offset|) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:24,052 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:37:24,053 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 11] total 18 [2019-10-13 21:37:24,053 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247573065] [2019-10-13 21:37:24,057 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:37:24,058 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:24,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:37:24,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:37:24,062 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 18 states. [2019-10-13 21:37:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:25,224 INFO L93 Difference]: Finished difference Result 44 states and 52 transitions. [2019-10-13 21:37:25,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:37:25,224 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 16 [2019-10-13 21:37:25,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:25,226 INFO L225 Difference]: With dead ends: 44 [2019-10-13 21:37:25,226 INFO L226 Difference]: Without dead ends: 31 [2019-10-13 21:37:25,232 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=166, Invalid=646, Unknown=0, NotChecked=0, Total=812 [2019-10-13 21:37:25,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-13 21:37:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-10-13 21:37:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 21:37:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-10-13 21:37:25,244 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 16 [2019-10-13 21:37:25,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:25,245 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-10-13 21:37:25,245 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:37:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2019-10-13 21:37:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-13 21:37:25,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:25,247 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:25,447 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:25,448 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:25,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:25,449 INFO L82 PathProgramCache]: Analyzing trace with hash -127994615, now seen corresponding path program 2 times [2019-10-13 21:37:25,449 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:25,449 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423044441] [2019-10-13 21:37:25,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:25,449 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:25,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 21:37:25,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423044441] [2019-10-13 21:37:25,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993305199] [2019-10-13 21:37:25,576 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 21:37:25,647 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-13 21:37:25,647 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:37:25,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:37:25,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 21:37:25,689 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:25,752 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-13 21:37:25,753 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [615271980] [2019-10-13 21:37:25,754 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:37:25,755 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:25,755 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:25,755 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:25,756 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:25,793 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:37:26,141 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 225 [2019-10-13 21:37:26,162 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:26,275 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2019-10-13 21:37:26,315 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:26,487 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:26,919 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:27,080 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:27,507 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-13 21:37:27,520 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:27,524 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:27,524 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:27,525 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 216#(and (exists ((v_prenex_22 Int) (|v_main_~#c~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_2|) 60000) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| v_prenex_22) 60000) 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:27,525 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 221#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_22 Int) (|v_main_~#c~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_2|) 60000) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| v_prenex_22) 60000) 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 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 21:37:27,525 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 230#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:27,525 INFO L193 IcfgInterpreter]: Reachable states at location L34 satisfy 197#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (= |main_~#c~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (= |#NULL.base| 0) (< main_~i~0 100000) (= |main_~#c~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0))) (or (and (<= 0 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= main_~i~0 100000) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 1 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= main_~i~0 100000) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:27,526 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 202#(and (= |#NULL.base| 0) (< main_~i~0 100000) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (= main_~i~0 15000) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 15000 main_~i~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 1 main_~i~0) (<= |main_~#c~0.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (<= main_~i~0 15000) (= (select (select |#memory_int| |main_~#c~0.base|) (+ |main_~#c~0.offset| (* main_~i~0 4))) |main_#t~mem5|) (= |#NULL.offset| 0) (<= 0 |main_~#c~0.offset|) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:27,527 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 226#(and (<= __VERIFIER_assert_~cond 0) (exists ((v_prenex_22 Int) (|v_main_~#c~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_2|) 60000) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| v_prenex_22) 60000) 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 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 21:37:27,529 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 21:37:27,530 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 21:37:27,530 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 235#(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 21:37:27,530 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:27,530 INFO L193 IcfgInterpreter]: Reachable states at location L10-3 satisfy 115#(and (or (and (= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= 0 |#NULL.base|) (= |main_~#c~0.offset| 0) (not (= |main_~#b~0.base| 0)) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |main_~#b~0.offset| 0) (= (store (store (store |old(#length)| |main_~#a~0.base| 400000) |main_~#b~0.base| 400000) |main_~#c~0.base| 400000) |#length|) (= |main_~#a~0.offset| 0) (< |main_~#b~0.base| |#StackHeapBarrier|) (not (= 0 |main_~#c~0.base|)) (= (select (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1) |main_~#c~0.base|) 0) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (< |main_~#c~0.base| |#StackHeapBarrier|) (= (select (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base|) 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |#valid| (store (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1) |main_~#c~0.base| 1)) (= main_~i~0 0))) (<= 0 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:27,531 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 179#(and (or (and (= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (<= 1 main_~i~0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (= 1 (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| 60000))) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= main_~i~0 0) (= |main_~#a~0.offset| 0))) (or (and (<= 0 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= main_~i~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 1 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:27,531 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 211#(exists ((v_prenex_22 Int) (|v_main_~#c~0.base_BEFORE_CALL_2| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_2|) 60000) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= (select (select |#memory_int| v_prenex_22) 60000) 0) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:27,532 INFO L193 IcfgInterpreter]: Reachable states at location L32-2 satisfy 174#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#c~0.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |main_~#c~0.offset|) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:28,168 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:37:28,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7, 11] total 24 [2019-10-13 21:37:28,169 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218137172] [2019-10-13 21:37:28,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 21:37:28,170 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:28,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 21:37:28,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:37:28,171 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 24 states. [2019-10-13 21:37:30,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:30,051 INFO L93 Difference]: Finished difference Result 71 states and 87 transitions. [2019-10-13 21:37:30,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:37:30,052 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 22 [2019-10-13 21:37:30,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:30,056 INFO L225 Difference]: With dead ends: 71 [2019-10-13 21:37:30,056 INFO L226 Difference]: Without dead ends: 55 [2019-10-13 21:37:30,058 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=364, Invalid=1276, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 21:37:30,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-13 21:37:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2019-10-13 21:37:30,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-13 21:37:30,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2019-10-13 21:37:30,069 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 22 [2019-10-13 21:37:30,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:30,069 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2019-10-13 21:37:30,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 21:37:30,070 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2019-10-13 21:37:30,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-13 21:37:30,071 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:30,071 INFO L380 BasicCegarLoop]: trace histogram [10, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:30,276 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:30,277 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:30,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:30,278 INFO L82 PathProgramCache]: Analyzing trace with hash 701320466, now seen corresponding path program 3 times [2019-10-13 21:37:30,278 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:30,278 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143690362] [2019-10-13 21:37:30,279 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:30,279 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:30,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:37:30,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143690362] [2019-10-13 21:37:30,411 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752909702] [2019-10-13 21:37:30,411 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 21:37:30,500 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:37:30,500 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:37:30,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-13 21:37:30,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:37:30,517 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 21:37:30,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1702625330] [2019-10-13 21:37:30,636 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:37:30,636 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:30,637 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:30,637 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:30,637 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:30,666 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:37:30,893 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:30,983 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:31,237 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:31,566 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:31,603 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:31,861 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2019-10-13 21:37:31,896 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:32,200 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-13 21:37:32,208 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:32,211 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:32,211 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:32,211 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 223#(and (exists ((v_prenex_33 Int) (|v_main_~#c~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_3|) 60000) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_33) 60000) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:32,212 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 228#(and (exists ((v_prenex_33 Int) (|v_main_~#c~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_3|) 60000) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_33) 60000) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __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 21:37:32,212 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 237#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:32,212 INFO L193 IcfgInterpreter]: Reachable states at location L34 satisfy 204#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (= |main_~#c~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (= |#NULL.base| 0) (< main_~i~0 100000) (= |main_~#c~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0))) (or (and (<= 0 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= main_~i~0 100000) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 1 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= main_~i~0 100000) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:32,212 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 209#(and (= |#NULL.base| 0) (< main_~i~0 100000) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (= main_~i~0 15000) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 15000 main_~i~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 1 main_~i~0) (<= |main_~#c~0.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (<= main_~i~0 15000) (= (select (select |#memory_int| |main_~#c~0.base|) (+ |main_~#c~0.offset| (* main_~i~0 4))) |main_#t~mem5|) (= |#NULL.offset| 0) (<= 0 |main_~#c~0.offset|) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:32,213 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 233#(and (exists ((v_prenex_33 Int) (|v_main_~#c~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_3|) 60000) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_33) 60000) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (<= __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 21:37:32,213 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 21:37:32,213 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 21:37:32,213 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 242#(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 21:37:32,214 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:32,214 INFO L193 IcfgInterpreter]: Reachable states at location L10-3 satisfy 122#(and (or (and (= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= 0 |#NULL.base|) (= |main_~#c~0.offset| 0) (not (= |main_~#b~0.base| 0)) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |main_~#b~0.offset| 0) (= (store (store (store |old(#length)| |main_~#a~0.base| 400000) |main_~#b~0.base| 400000) |main_~#c~0.base| 400000) |#length|) (= |main_~#a~0.offset| 0) (< |main_~#b~0.base| |#StackHeapBarrier|) (not (= 0 |main_~#c~0.base|)) (= (select (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1) |main_~#c~0.base|) 0) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (< |main_~#c~0.base| |#StackHeapBarrier|) (= (select (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base|) 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |#valid| (store (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1) |main_~#c~0.base| 1)) (= main_~i~0 0))) (<= 0 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:32,214 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 186#(and (or (and (= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (<= 1 main_~i~0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (= 1 (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| 60000))) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= main_~i~0 0) (= |main_~#a~0.offset| 0))) (or (and (<= 0 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= main_~i~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 1 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:32,214 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 218#(exists ((v_prenex_33 Int) (|v_main_~#c~0.base_BEFORE_CALL_3| Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (not (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_3|) 60000) 0)) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_33) 60000) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:32,215 INFO L193 IcfgInterpreter]: Reachable states at location L32-2 satisfy 181#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#c~0.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |main_~#c~0.offset|) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:32,877 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:37:32,877 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 11] total 26 [2019-10-13 21:37:32,877 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812267093] [2019-10-13 21:37:32,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:37:32,879 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:32,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:37:32,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:37:32,880 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 26 states. [2019-10-13 21:37:34,349 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2019-10-13 21:37:34,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:34,953 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2019-10-13 21:37:34,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 21:37:34,953 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 37 [2019-10-13 21:37:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:34,955 INFO L225 Difference]: With dead ends: 91 [2019-10-13 21:37:34,955 INFO L226 Difference]: Without dead ends: 66 [2019-10-13 21:37:34,957 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 101 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 640 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=455, Invalid=1615, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:37:34,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-13 21:37:34,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2019-10-13 21:37:34,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-10-13 21:37:34,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2019-10-13 21:37:34,969 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 37 [2019-10-13 21:37:34,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:34,969 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2019-10-13 21:37:34,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:37:34,970 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2019-10-13 21:37:34,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-13 21:37:34,971 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:34,972 INFO L380 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:35,176 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:35,176 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:35,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:35,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1575063017, now seen corresponding path program 4 times [2019-10-13 21:37:35,177 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:35,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810953478] [2019-10-13 21:37:35,177 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:35,177 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:35,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-10-13 21:37:35,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810953478] [2019-10-13 21:37:35,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739161412] [2019-10-13 21:37:35,462 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 21:37:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:35,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-13 21:37:35,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:37:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-10-13 21:37:35,586 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:37:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2019-10-13 21:37:35,801 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [454167818] [2019-10-13 21:37:35,802 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 21:37:35,802 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 21:37:35,802 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 21:37:35,803 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 21:37:35,803 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 21:37:35,826 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 21 for LOIs [2019-10-13 21:37:36,065 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:36,329 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:36,412 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:36,762 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:36,881 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-13 21:37:37,250 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2019-10-13 21:37:37,268 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 10 for LOIs [2019-10-13 21:37:37,270 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 21:37:37,271 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 21:37:37,271 INFO L193 IcfgInterpreter]: Reachable states at location L2 satisfy 224#(and (exists ((|v_main_~#c~0.base_BEFORE_CALL_4| Int) (v_prenex_43 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_4|) 60000) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_43) 60000) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 21:37:37,271 INFO L193 IcfgInterpreter]: Reachable states at location L2-1 satisfy 229#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#c~0.base_BEFORE_CALL_4| Int) (v_prenex_43 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_4|) 60000) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_43) 60000) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 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 21:37:37,271 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initENTRY satisfy 238#(and (= |old(#NULL.base)| |#NULL.base|) (= |#valid| |old(#valid)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2019-10-13 21:37:37,271 INFO L193 IcfgInterpreter]: Reachable states at location L34 satisfy 205#(and (or (and (= |#NULL.base| 0) (<= 0 main_~i~0) (= |main_~#c~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (= |#NULL.base| 0) (< main_~i~0 100000) (= |main_~#c~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0))) (or (and (<= 0 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= main_~i~0 100000) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 1 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= main_~i~0 100000) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:37,272 INFO L193 IcfgInterpreter]: Reachable states at location L36 satisfy 210#(and (= |#NULL.base| 0) (< main_~i~0 100000) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (= main_~i~0 15000) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 15000 main_~i~0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= 1 main_~i~0) (<= |main_~#c~0.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (<= main_~i~0 15000) (= (select (select |#memory_int| |main_~#c~0.base|) (+ |main_~#c~0.offset| (* main_~i~0 4))) |main_#t~mem5|) (= |#NULL.offset| 0) (<= 0 |main_~#c~0.offset|) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:37,274 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 234#(and (<= __VERIFIER_assert_~cond 0) (exists ((|v_main_~#c~0.base_BEFORE_CALL_4| Int) (v_prenex_43 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_4|) 60000) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_43) 60000) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 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 21:37:37,275 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 21:37:37,275 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 21:37:37,275 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 243#(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 21:37:37,275 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 21:37:37,275 INFO L193 IcfgInterpreter]: Reachable states at location L10-3 satisfy 123#(and (or (and (= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (< |main_~#a~0.base| |#StackHeapBarrier|) (= 0 |#NULL.base|) (= |main_~#c~0.offset| 0) (not (= |main_~#b~0.base| 0)) (not (= 0 |main_~#a~0.base|)) (= 0 (select |old(#valid)| |main_~#a~0.base|)) (= |main_~#b~0.offset| 0) (= (store (store (store |old(#length)| |main_~#a~0.base| 400000) |main_~#b~0.base| 400000) |main_~#c~0.base| 400000) |#length|) (= |main_~#a~0.offset| 0) (< |main_~#b~0.base| |#StackHeapBarrier|) (not (= 0 |main_~#c~0.base|)) (= (select (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1) |main_~#c~0.base|) 0) (<= main_~i~0 0) (= 0 (select |old(#valid)| 0)) (< |main_~#c~0.base| |#StackHeapBarrier|) (= (select (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base|) 0) (= |#memory_int| |old(#memory_int)|) (= |#NULL.offset| 0) (= |#valid| (store (store (store |old(#valid)| |main_~#a~0.base| 1) |main_~#b~0.base| 1) |main_~#c~0.base| 1)) (= main_~i~0 0))) (<= 0 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) [2019-10-13 21:37:37,276 INFO L193 IcfgInterpreter]: Reachable states at location L32-3 satisfy 187#(and (or (and (= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (<= 1 main_~i~0) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= |main_~#a~0.offset| 0)) (and (= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (= 1 (select (select |#memory_int| |main_~#a~0.base|) (+ |main_~#a~0.offset| 60000))) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (= main_~i~0 0) (= |main_~#a~0.offset| 0))) (or (and (<= 0 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= main_~i~0 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (<= 1 main_~i~0) (<= |main_~#c~0.offset| 0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (<= 0 |main_~#b~0.offset|) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |main_~#c~0.offset|) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:37,276 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 219#(exists ((|v_main_~#c~0.base_BEFORE_CALL_4| Int) (v_prenex_43 Int)) (or (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 0) (<= |#NULL.base| 0) (<= 0 |#NULL.base|) (not (= (select (select |#memory_int| |v_main_~#c~0.base_BEFORE_CALL_4|) 60000) 0)) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)) (and (= |#NULL.base| 0) (= |__VERIFIER_assert_#in~cond| 1) (<= |#NULL.base| 0) (= (select (select |#memory_int| v_prenex_43) 60000) 0) (<= 0 |#NULL.base|) (= |#NULL.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0)))) [2019-10-13 21:37:37,276 INFO L193 IcfgInterpreter]: Reachable states at location L32-2 satisfy 182#(and (= |#NULL.base| 0) (<= 0 main_~i~0) (<= |main_~#b~0.offset| 0) (<= |#NULL.base| 0) (= |main_~#c~0.offset| 0) (<= 0 |main_~#a~0.offset|) (<= 0 |#NULL.base|) (<= |main_~#a~0.offset| 0) (<= 0 |#NULL.offset|) (<= |#NULL.offset| 0) (<= |main_~#c~0.offset| 0) (<= 0 |main_~#b~0.offset|) (= |main_~#b~0.offset| 0) (= |#NULL.offset| 0) (<= 0 |main_~#c~0.offset|) (= |main_~#a~0.offset| 0)) [2019-10-13 21:37:38,112 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-13 21:37:38,113 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15, 11] total 40 [2019-10-13 21:37:38,113 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085679015] [2019-10-13 21:37:38,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2019-10-13 21:37:38,114 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 21:37:38,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2019-10-13 21:37:38,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=1108, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:37:38,116 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand 40 states. [2019-10-13 21:37:42,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:37:42,132 INFO L93 Difference]: Finished difference Result 165 states and 195 transitions. [2019-10-13 21:37:42,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-10-13 21:37:42,134 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 60 [2019-10-13 21:37:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:37:42,135 INFO L225 Difference]: With dead ends: 165 [2019-10-13 21:37:42,135 INFO L226 Difference]: Without dead ends: 119 [2019-10-13 21:37:42,137 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 170 SyntacticMatches, 12 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1420, Invalid=3836, Unknown=0, NotChecked=0, Total=5256 [2019-10-13 21:37:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2019-10-13 21:37:42,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 81. [2019-10-13 21:37:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-10-13 21:37:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2019-10-13 21:37:42,161 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 60 [2019-10-13 21:37:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:37:42,161 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2019-10-13 21:37:42,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 40 states. [2019-10-13 21:37:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2019-10-13 21:37:42,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2019-10-13 21:37:42,164 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:37:42,164 INFO L380 BasicCegarLoop]: trace histogram [26, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:37:42,370 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:37:42,370 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:37:42,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:37:42,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1748959122, now seen corresponding path program 5 times [2019-10-13 21:37:42,371 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 21:37:42,372 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873527312] [2019-10-13 21:37:42,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:42,372 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:37:42,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:37:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:37:42,651 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2019-10-13 21:37:42,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873527312] [2019-10-13 21:37:42,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448278784] [2019-10-13 21:37:42,651 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