/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:03:50,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:03:50,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:03:50,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:03:50,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:03:50,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:03:50,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:03:50,069 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:03:50,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:03:50,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:03:50,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:03:50,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:03:50,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:03:50,078 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:03:50,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:03:50,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:03:50,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:03:50,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:03:50,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:03:50,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:03:50,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:03:50,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:03:50,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:03:50,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:03:50,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:03:50,103 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:03:50,103 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:03:50,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:03:50,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:03:50,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:03:50,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:03:50,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:03:50,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:03:50,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:03:50,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:03:50,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:03:50,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:03:50,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:03:50,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:03:50,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:03:50,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:03:50,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 04:03:50,146 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:03:50,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:03:50,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:03:50,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:03:50,148 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:03:50,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:03:50,148 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:03:50,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:03:50,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:03:50,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:03:50,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:03:50,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:03:50,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:03:50,149 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:03:50,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:03:50,150 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:03:50,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:03:50,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:03:50,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:03:50,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:03:50,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:03:50,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:03:50,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:03:50,151 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:03:50,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:03:50,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:03:50,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:03:50,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:03:50,152 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 04:03:50,433 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:03:50,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:03:50,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:03:50,451 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:03:50,452 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:03:50,453 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2019-11-07 04:03:50,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/419a6b02a/6acea232bb604a34ab27bf258e407370/FLAG96abdb1fa [2019-11-07 04:03:50,938 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:03:50,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i [2019-11-07 04:03:50,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/419a6b02a/6acea232bb604a34ab27bf258e407370/FLAG96abdb1fa [2019-11-07 04:03:51,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/419a6b02a/6acea232bb604a34ab27bf258e407370 [2019-11-07 04:03:51,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:03:51,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:03:51,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:03:51,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:03:51,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:03:51,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:03:51" (1/1) ... [2019-11-07 04:03:51,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1058969a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:51, skipping insertion in model container [2019-11-07 04:03:51,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:03:51" (1/1) ... [2019-11-07 04:03:51,395 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:03:51,411 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:03:51,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:03:51,608 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:03:51,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:03:51,643 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:03:51,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:51 WrapperNode [2019-11-07 04:03:51,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:03:51,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:03:51,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:03:51,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:03:51,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:51" (1/1) ... [2019-11-07 04:03:51,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:51" (1/1) ... [2019-11-07 04:03:51,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:51" (1/1) ... [2019-11-07 04:03:51,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:51" (1/1) ... [2019-11-07 04:03:51,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:51" (1/1) ... [2019-11-07 04:03:51,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:51" (1/1) ... [2019-11-07 04:03:51,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:51" (1/1) ... [2019-11-07 04:03:51,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:03:51,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:03:51,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:03:51,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:03:51,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:03:51,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:03:51,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:03:51,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:03:51,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:03:51,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:03:51,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:03:51,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-07 04:03:52,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:03:52,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:03:52,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:03:52,301 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:03:52,301 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 04:03:52,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:03:52 BoogieIcfgContainer [2019-11-07 04:03:52,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:03:52,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:03:52,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:03:52,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:03:52,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:03:51" (1/3) ... [2019-11-07 04:03:52,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7d525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:03:52, skipping insertion in model container [2019-11-07 04:03:52,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:51" (2/3) ... [2019-11-07 04:03:52,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7d525 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:03:52, skipping insertion in model container [2019-11-07 04:03:52,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:03:52" (3/3) ... [2019-11-07 04:03:52,318 INFO L109 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2019-11-07 04:03:52,331 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:03:52,357 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:03:52,387 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:03:52,414 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:03:52,414 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:03:52,415 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:03:52,416 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:03:52,417 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:03:52,417 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:03:52,418 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:03:52,418 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:03:52,440 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-07 04:03:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:03:52,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:03:52,446 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:03:52,447 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:03:52,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:03:52,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1736341467, now seen corresponding path program 1 times [2019-11-07 04:03:52,460 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:03:52,461 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253203520] [2019-11-07 04:03:52,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:03:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:52,903 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253203520] [2019-11-07 04:03:52,905 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:03:52,905 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:03:52,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590896109] [2019-11-07 04:03:52,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:03:52,914 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:03:52,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:03:52,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:03:52,936 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-11-07 04:03:53,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:03:53,282 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2019-11-07 04:03:53,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:03:53,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-07 04:03:53,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:03:53,294 INFO L225 Difference]: With dead ends: 31 [2019-11-07 04:03:53,295 INFO L226 Difference]: Without dead ends: 20 [2019-11-07 04:03:53,299 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-07 04:03:53,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-07 04:03:53,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2019-11-07 04:03:53,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-07 04:03:53,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-11-07 04:03:53,343 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2019-11-07 04:03:53,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:03:53,344 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-11-07 04:03:53,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:03:53,344 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-11-07 04:03:53,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 04:03:53,346 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:03:53,346 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:03:53,347 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:03:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:03:53,348 INFO L82 PathProgramCache]: Analyzing trace with hash -239611021, now seen corresponding path program 1 times [2019-11-07 04:03:53,348 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:03:53,349 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576703380] [2019-11-07 04:03:53,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:03:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:53,692 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576703380] [2019-11-07 04:03:53,692 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834352862] [2019-11-07 04:03:53,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:03:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:53,739 WARN L254 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-07 04:03:53,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:03:53,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:03:53,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:03:53,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:03:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:53,999 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:03:56,054 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:03:58,070 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (mod (+ (* c_main_~x~0 2) 2) 4294967296)) (.cse2 (mod c_main_~x~0 4294967296))) (and (let ((.cse0 (+ c_main_~sn~0 2))) (or (= (mod .cse0 4294967296) .cse1) (= 0 .cse0) (<= 10 .cse2))) (or (= .cse1 (mod c_main_~sn~0 4294967296)) (= 0 c_main_~sn~0) (< .cse2 10)))) is different from false [2019-11-07 04:03:58,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:04:35,826 WARN L191 SmtUtils]: Spent 33.53 s on a formula simplification. DAG size of input: 28 DAG size of output: 26 [2019-11-07 04:04:35,830 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:04:37,919 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:04:39,944 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse9 (mod (+ c_main_~x~0 1) 4294967296)) (.cse10 (* c_main_~x~0 2)) (.cse8 (+ c_main_~sn~0 2))) (let ((.cse1 (mod .cse8 4294967296)) (.cse5 (mod (+ .cse10 2) 4294967296)) (.cse0 (<= 10 .cse9)) (.cse2 (mod (+ .cse10 4) 4294967296)) (.cse3 (< .cse9 10)) (.cse6 (mod c_main_~x~0 4294967296))) (and (let ((.cse4 (= 0 c_main_~sn~0))) (or (and (or .cse0 (= .cse1 .cse2)) (or .cse3 .cse4)) (and (not (= .cse5 (mod c_main_~sn~0 4294967296))) (not .cse4)) (< .cse6 10))) (let ((.cse7 (= 0 .cse8))) (or (and (not (= .cse1 .cse5)) (not .cse7)) (and (or .cse0 (= (mod (+ c_main_~sn~0 4) 4294967296) .cse2)) (or .cse3 .cse7)) (<= 10 .cse6)))))) is different from false [2019-11-07 04:04:42,095 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse9 (mod (+ c_main_~x~0 1) 4294967296)) (.cse10 (* c_main_~x~0 2)) (.cse8 (+ c_main_~sn~0 2))) (let ((.cse1 (mod .cse8 4294967296)) (.cse5 (mod (+ .cse10 2) 4294967296)) (.cse0 (<= 10 .cse9)) (.cse2 (mod (+ .cse10 4) 4294967296)) (.cse3 (< .cse9 10)) (.cse6 (mod c_main_~x~0 4294967296))) (and (let ((.cse4 (= 0 c_main_~sn~0))) (or (and (or .cse0 (= .cse1 .cse2)) (or .cse3 .cse4)) (and (not (= .cse5 (mod c_main_~sn~0 4294967296))) (not .cse4)) (< .cse6 10))) (let ((.cse7 (= 0 .cse8))) (or (and (not (= .cse1 .cse5)) (not .cse7)) (and (or .cse0 (= (mod (+ c_main_~sn~0 4) 4294967296) .cse2)) (or .cse3 .cse7)) (<= 10 .cse6)))))) is different from true [2019-11-07 04:04:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2019-11-07 04:04:42,103 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [792441287] [2019-11-07 04:04:42,128 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2019-11-07 04:04:42,128 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:04:42,134 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:04:42,141 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:04:42,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:04:42,206 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-11-07 04:04:42,418 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-11-07 04:04:42,426 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-11-07 04:04:42,427 INFO L180 IcfgInterpreter]: Interpretation finished