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/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:01:50,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:01:50,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:01:50,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:01:50,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:01:50,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:01:50,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:01:50,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:01:50,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:01:50,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:01:50,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:01:50,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:01:50,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:01:50,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:01:50,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:01:50,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:01:50,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:01:50,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:01:50,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:01:50,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:01:50,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:01:50,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:01:50,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:01:50,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:01:50,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:01:50,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:01:50,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:01:50,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:01:50,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:01:50,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:01:50,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:01:50,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:01:50,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:01:50,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:01:50,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:01:50,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:01:50,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:01:50,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:01:50,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:01:50,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:01:50,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:01:50,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:01:50,292 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:01:50,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:01:50,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:01:50,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:01:50,297 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:01:50,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:01:50,298 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:01:50,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:01:50,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:01:50,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:01:50,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:01:50,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:01:50,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:01:50,299 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:01:50,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:01:50,299 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:01:50,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:01:50,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:01:50,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:01:50,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:01:50,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:01:50,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:01:50,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:01:50,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:01:50,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:01:50,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:01:50,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:01:50,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:01:50,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:01:50,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:01:50,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:01:50,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:01:50,673 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:01:50,673 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:01:50,674 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2019-10-15 03:01:50,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ff8f912/6b3c02932c1e49a2a1bb61af240e2fed/FLAG60535a10e [2019-10-15 03:01:51,279 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:01:51,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2019-10-15 03:01:51,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ff8f912/6b3c02932c1e49a2a1bb61af240e2fed/FLAG60535a10e [2019-10-15 03:01:51,533 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44ff8f912/6b3c02932c1e49a2a1bb61af240e2fed [2019-10-15 03:01:51,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:01:51,548 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:01:51,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:01:51,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:01:51,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:01:51,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:01:51" (1/1) ... [2019-10-15 03:01:51,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c13a945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:51, skipping insertion in model container [2019-10-15 03:01:51,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:01:51" (1/1) ... [2019-10-15 03:01:51,566 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:01:51,624 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:01:51,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:01:52,052 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:01:52,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:01:52,178 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:01:52,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:52 WrapperNode [2019-10-15 03:01:52,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:01:52,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:01:52,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:01:52,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:01:52,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:52" (1/1) ... [2019-10-15 03:01:52,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:52" (1/1) ... [2019-10-15 03:01:52,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:52" (1/1) ... [2019-10-15 03:01:52,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:52" (1/1) ... [2019-10-15 03:01:52,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:52" (1/1) ... [2019-10-15 03:01:52,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:52" (1/1) ... [2019-10-15 03:01:52,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:52" (1/1) ... [2019-10-15 03:01:52,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:01:52,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:01:52,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:01:52,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:01:52,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:01:52,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:01:52,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:01:52,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:01:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:01:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2019-10-15 03:01:52,370 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-15 03:01:52,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:01:52,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:01:52,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:01:52,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:01:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:01:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:01:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:01:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:01:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:01:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:01:52,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:01:53,701 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:01:53,702 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 03:01:53,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:01:53 BoogieIcfgContainer [2019-10-15 03:01:53,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:01:53,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:01:53,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:01:53,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:01:53,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:01:51" (1/3) ... [2019-10-15 03:01:53,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e118c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:01:53, skipping insertion in model container [2019-10-15 03:01:53,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:52" (2/3) ... [2019-10-15 03:01:53,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58e118c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:01:53, skipping insertion in model container [2019-10-15 03:01:53,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:01:53" (3/3) ... [2019-10-15 03:01:53,712 INFO L109 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2019-10-15 03:01:53,722 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:01:53,731 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:01:53,743 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:01:53,779 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:01:53,779 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:01:53,779 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:01:53,779 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:01:53,780 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:01:53,780 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:01:53,780 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:01:53,781 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:01:53,803 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2019-10-15 03:01:53,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 03:01:53,814 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:01:53,815 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:01:53,818 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:01:53,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:01:53,823 INFO L82 PathProgramCache]: Analyzing trace with hash -983092727, now seen corresponding path program 1 times [2019-10-15 03:01:53,833 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:01:53,833 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823858831] [2019-10-15 03:01:53,833 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:01:53,834 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:01:53,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:01:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:01:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:01:54,847 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823858831] [2019-10-15 03:01:54,848 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:01:54,848 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-15 03:01:54,849 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283566528] [2019-10-15 03:01:54,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-15 03:01:54,855 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:01:54,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-15 03:01:54,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:01:54,875 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 19 states. [2019-10-15 03:01:56,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:01:56,132 INFO L93 Difference]: Finished difference Result 91 states and 135 transitions. [2019-10-15 03:01:56,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-15 03:01:56,134 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2019-10-15 03:01:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:01:56,144 INFO L225 Difference]: With dead ends: 91 [2019-10-15 03:01:56,144 INFO L226 Difference]: Without dead ends: 56 [2019-10-15 03:01:56,148 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2019-10-15 03:01:56,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-15 03:01:56,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2019-10-15 03:01:56,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-15 03:01:56,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2019-10-15 03:01:56,189 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 47 [2019-10-15 03:01:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:01:56,189 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2019-10-15 03:01:56,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-15 03:01:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2019-10-15 03:01:56,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 03:01:56,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:01:56,192 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:01:56,192 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:01:56,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:01:56,192 INFO L82 PathProgramCache]: Analyzing trace with hash -187787640, now seen corresponding path program 1 times [2019-10-15 03:01:56,193 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:01:56,193 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907914973] [2019-10-15 03:01:56,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:01:56,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:01:56,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:01:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:01:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:01:56,766 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907914973] [2019-10-15 03:01:56,767 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529213631] [2019-10-15 03:01:56,767 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:01:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:01:56,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-15 03:01:56,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:01:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:01:57,058 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:01:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:01:58,024 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [333526670] [2019-10-15 03:01:58,052 INFO L162 IcfgInterpreter]: Started Sifa with 50 locations of interest [2019-10-15 03:01:58,052 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:01:58,063 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:01:58,074 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:01:58,075 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:02:00,664 WARN L191 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 275 DAG size of output: 221 [2019-10-15 03:02:01,030 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-15 03:02:01,273 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-15 03:02:01,614 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 318 DAG size of output: 316 [2019-10-15 03:02:01,747 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-15 03:02:01,996 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2019-10-15 03:02:02,192 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 326 for LOIs [2019-10-15 03:02:02,624 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 341