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/eca-rers2012/Problem18_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 03:39:58,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 03:39:58,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 03:39:58,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 03:39:58,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 03:39:58,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 03:39:58,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 03:39:58,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 03:39:58,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 03:39:58,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 03:39:58,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 03:39:58,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 03:39:58,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 03:39:58,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 03:39:58,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 03:39:58,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 03:39:58,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 03:39:58,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 03:39:58,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 03:39:58,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 03:39:58,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 03:39:58,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 03:39:58,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 03:39:58,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 03:39:58,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 03:39:58,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 03:39:58,222 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 03:39:58,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 03:39:58,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 03:39:58,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 03:39:58,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 03:39:58,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 03:39:58,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 03:39:58,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 03:39:58,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 03:39:58,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 03:39:58,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 03:39:58,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 03:39:58,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 03:39:58,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 03:39:58,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 03:39:58,232 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 [2019-10-07 03:39:58,250 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 03:39:58,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 03:39:58,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 03:39:58,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 03:39:58,252 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 03:39:58,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 03:39:58,253 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 03:39:58,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 03:39:58,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 03:39:58,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 03:39:58,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 03:39:58,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 03:39:58,254 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 03:39:58,254 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 03:39:58,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 03:39:58,256 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 03:39:58,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 03:39:58,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 03:39:58,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 03:39:58,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 03:39:58,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 03:39:58,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 03:39:58,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 03:39:58,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 03:39:58,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 03:39:58,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 03:39:58,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 03:39:58,258 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 03:39:58,258 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 [2019-10-07 03:39:58,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 03:39:58,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 03:39:58,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 03:39:58,558 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 03:39:58,559 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 03:39:58,560 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label18.c [2019-10-07 03:39:58,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd50cd5d/22b5e68ce40e44b5b21dfef70d5dcfd4/FLAG52f3f2ae8 [2019-10-07 03:39:59,359 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 03:39:59,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label18.c [2019-10-07 03:39:59,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd50cd5d/22b5e68ce40e44b5b21dfef70d5dcfd4/FLAG52f3f2ae8 [2019-10-07 03:39:59,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcd50cd5d/22b5e68ce40e44b5b21dfef70d5dcfd4 [2019-10-07 03:39:59,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 03:39:59,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 03:39:59,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 03:39:59,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 03:39:59,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 03:39:59,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:39:59" (1/1) ... [2019-10-07 03:39:59,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6688ee2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:39:59, skipping insertion in model container [2019-10-07 03:39:59,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:39:59" (1/1) ... [2019-10-07 03:39:59,502 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 03:39:59,626 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 03:40:01,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:40:01,145 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 03:40:01,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 03:40:01,648 INFO L192 MainTranslator]: Completed translation [2019-10-07 03:40:01,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:01 WrapperNode [2019-10-07 03:40:01,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 03:40:01,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 03:40:01,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 03:40:01,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 03:40:01,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:01" (1/1) ... [2019-10-07 03:40:01,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:01" (1/1) ... [2019-10-07 03:40:01,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:01" (1/1) ... [2019-10-07 03:40:01,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:01" (1/1) ... [2019-10-07 03:40:01,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:01" (1/1) ... [2019-10-07 03:40:01,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:01" (1/1) ... [2019-10-07 03:40:01,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:01" (1/1) ... [2019-10-07 03:40:01,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 03:40:01,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 03:40:01,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 03:40:01,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 03:40:01,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:01" (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 [2019-10-07 03:40:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 03:40:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 03:40:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-07 03:40:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-07 03:40:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-07 03:40:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 03:40:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-07 03:40:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-07 03:40:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-07 03:40:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 03:40:01,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 03:40:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 03:40:01,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 03:40:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 03:40:01,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 03:41:45,679 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 03:41:45,680 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 03:41:45,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:41:45 BoogieIcfgContainer [2019-10-07 03:41:45,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 03:41:45,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 03:41:45,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 03:41:45,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 03:41:45,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:39:59" (1/3) ... [2019-10-07 03:41:45,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2161ba75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:41:45, skipping insertion in model container [2019-10-07 03:41:45,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:40:01" (2/3) ... [2019-10-07 03:41:45,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2161ba75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:41:45, skipping insertion in model container [2019-10-07 03:41:45,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:41:45" (3/3) ... [2019-10-07 03:41:45,691 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label18.c [2019-10-07 03:41:45,698 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 03:41:45,706 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 03:41:45,716 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 03:41:45,751 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 03:41:45,752 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 03:41:45,752 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 03:41:45,752 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 03:41:45,752 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 03:41:45,752 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 03:41:45,753 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 03:41:45,753 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 03:41:45,782 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2019-10-07 03:41:45,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 03:41:45,789 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:41:45,790 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 03:41:45,791 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:41:45,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:41:45,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1816950438, now seen corresponding path program 1 times [2019-10-07 03:41:45,807 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:41:45,807 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:41:45,807 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:41:45,807 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:41:45,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:41:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:41:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:41:46,049 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:41:46,050 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:41:46,051 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 03:41:46,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 03:41:46,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 03:41:46,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:41:46,072 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 3 states. [2019-10-07 03:41:49,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:41:49,427 INFO L93 Difference]: Finished difference Result 1393 states and 2727 transitions. [2019-10-07 03:41:49,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 03:41:49,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-07 03:41:49,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:41:49,454 INFO L225 Difference]: With dead ends: 1393 [2019-10-07 03:41:49,454 INFO L226 Difference]: Without dead ends: 921 [2019-10-07 03:41:49,463 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 03:41:49,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2019-10-07 03:41:49,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 882. [2019-10-07 03:41:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2019-10-07 03:41:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1706 transitions. [2019-10-07 03:41:49,591 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1706 transitions. Word has length 11 [2019-10-07 03:41:49,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:41:49,593 INFO L462 AbstractCegarLoop]: Abstraction has 882 states and 1706 transitions. [2019-10-07 03:41:49,593 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 03:41:49,593 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1706 transitions. [2019-10-07 03:41:49,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-07 03:41:49,597 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:41:49,597 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 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] [2019-10-07 03:41:49,598 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:41:49,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:41:49,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1658673345, now seen corresponding path program 1 times [2019-10-07 03:41:49,600 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:41:49,600 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:41:49,600 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:41:49,600 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:41:49,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:41:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:41:49,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:41:49,794 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:41:49,794 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:41:49,794 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:41:49,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:41:49,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:41:49,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:41:49,797 INFO L87 Difference]: Start difference. First operand 882 states and 1706 transitions. Second operand 6 states. [2019-10-07 03:41:53,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:41:53,899 INFO L93 Difference]: Finished difference Result 2667 states and 5200 transitions. [2019-10-07 03:41:53,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:41:53,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 41 [2019-10-07 03:41:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:41:53,917 INFO L225 Difference]: With dead ends: 2667 [2019-10-07 03:41:53,918 INFO L226 Difference]: Without dead ends: 1790 [2019-10-07 03:41:53,921 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-07 03:41:53,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2019-10-07 03:41:54,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1769. [2019-10-07 03:41:54,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1769 states. [2019-10-07 03:41:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 3310 transitions. [2019-10-07 03:41:54,020 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 3310 transitions. Word has length 41 [2019-10-07 03:41:54,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:41:54,021 INFO L462 AbstractCegarLoop]: Abstraction has 1769 states and 3310 transitions. [2019-10-07 03:41:54,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:41:54,022 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 3310 transitions. [2019-10-07 03:41:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-07 03:41:54,024 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:41:54,024 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 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] [2019-10-07 03:41:54,024 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:41:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:41:54,025 INFO L82 PathProgramCache]: Analyzing trace with hash -837537840, now seen corresponding path program 1 times [2019-10-07 03:41:54,026 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:41:54,026 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:41:54,026 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:41:54,027 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:41:54,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:41:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:41:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 03:41:54,186 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:41:54,186 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 03:41:54,187 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 03:41:54,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 03:41:54,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 03:41:54,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 03:41:54,188 INFO L87 Difference]: Start difference. First operand 1769 states and 3310 transitions. Second operand 6 states. [2019-10-07 03:42:01,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:42:01,342 INFO L93 Difference]: Finished difference Result 7212 states and 14242 transitions. [2019-10-07 03:42:01,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 03:42:01,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2019-10-07 03:42:01,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:42:01,384 INFO L225 Difference]: With dead ends: 7212 [2019-10-07 03:42:01,384 INFO L226 Difference]: Without dead ends: 5448 [2019-10-07 03:42:01,391 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-07 03:42:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5448 states. [2019-10-07 03:42:01,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5448 to 5159. [2019-10-07 03:42:01,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5159 states. [2019-10-07 03:42:01,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5159 states to 5159 states and 8446 transitions. [2019-10-07 03:42:01,583 INFO L78 Accepts]: Start accepts. Automaton has 5159 states and 8446 transitions. Word has length 42 [2019-10-07 03:42:01,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:42:01,583 INFO L462 AbstractCegarLoop]: Abstraction has 5159 states and 8446 transitions. [2019-10-07 03:42:01,584 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 03:42:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 5159 states and 8446 transitions. [2019-10-07 03:42:01,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-07 03:42:01,586 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:42:01,587 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 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] [2019-10-07 03:42:01,587 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:42:01,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:42:01,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1777164899, now seen corresponding path program 1 times [2019-10-07 03:42:01,588 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:42:01,588 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:01,588 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:01,588 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:42:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:42:01,687 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:01,687 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:42:01,687 INFO L95 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 [2019-10-07 03:42:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:01,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-07 03:42:01,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:42:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:42:01,860 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:42:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-07 03:42:01,961 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 03:42:01,961 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2019-10-07 03:42:01,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 03:42:01,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 03:42:01,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-10-07 03:42:01,963 INFO L87 Difference]: Start difference. First operand 5159 states and 8446 transitions. Second operand 5 states. [2019-10-07 03:42:05,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 03:42:05,913 INFO L93 Difference]: Finished difference Result 14041 states and 24423 transitions. [2019-10-07 03:42:05,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 03:42:05,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-07 03:42:05,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 03:42:05,959 INFO L225 Difference]: With dead ends: 14041 [2019-10-07 03:42:05,960 INFO L226 Difference]: Without dead ends: 8887 [2019-10-07 03:42:05,980 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-10-07 03:42:05,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8887 states. [2019-10-07 03:42:06,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8887 to 7227. [2019-10-07 03:42:06,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7227 states. [2019-10-07 03:42:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7227 states to 7227 states and 10862 transitions. [2019-10-07 03:42:06,227 INFO L78 Accepts]: Start accepts. Automaton has 7227 states and 10862 transitions. Word has length 52 [2019-10-07 03:42:06,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 03:42:06,228 INFO L462 AbstractCegarLoop]: Abstraction has 7227 states and 10862 transitions. [2019-10-07 03:42:06,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 03:42:06,228 INFO L276 IsEmpty]: Start isEmpty. Operand 7227 states and 10862 transitions. [2019-10-07 03:42:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-07 03:42:06,233 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 03:42:06,233 INFO L385 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 03:42:06,438 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:42:06,439 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 03:42:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 03:42:06,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1079431917, now seen corresponding path program 1 times [2019-10-07 03:42:06,440 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 03:42:06,440 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:06,441 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:06,441 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 03:42:06,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 03:42:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 03:42:06,669 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 03:42:06,670 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 03:42:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:42:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 03:42:06,790 INFO L256 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 03:42:06,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 03:42:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 03:42:06,844 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 03:42:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-07 03:42:06,908 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 03:42:06,946 INFO L162 IcfgInterpreter]: Started Sifa with 70 locations of interest [2019-10-07 03:42:06,947 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 03:42:06,958 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 03:42:06,975 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 03:42:06,976 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 03:42:07,184 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 49 for LOIs [2019-10-07 03:42:07,343 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 51 [2019-10-07 03:42:08,091 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 51 [2019-10-07 03:42:08,324 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2019-10-07 03:42:08,337 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 10 [2019-10-07 03:42:08,617 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 03:42:08,618 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 03:42:08,624 INFO L168 Benchmark]: Toolchain (without parser) took 129139.85 ms. Allocated memory was 145.8 MB in the beginning and 1.2 GB in the end (delta: 1.1 GB). Free memory was 92.9 MB in the beginning and 837.5 MB in the end (delta: -744.6 MB). Peak memory consumption was 349.5 MB. Max. memory is 7.1 GB. [2019-10-07 03:42:08,625 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 03:42:08,626 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2164.80 ms. Allocated memory was 145.8 MB in the beginning and 237.5 MB in the end (delta: 91.8 MB). Free memory was 92.7 MB in the beginning and 122.2 MB in the end (delta: -29.5 MB). Peak memory consumption was 76.2 MB. Max. memory is 7.1 GB. [2019-10-07 03:42:08,627 INFO L168 Benchmark]: Boogie Preprocessor took 261.43 ms. Allocated memory is still 237.5 MB. Free memory was 122.2 MB in the beginning and 102.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:42:08,628 INFO L168 Benchmark]: RCFGBuilder took 103770.82 ms. Allocated memory was 237.5 MB in the beginning and 915.4 MB in the end (delta: 677.9 MB). Free memory was 102.1 MB in the beginning and 261.0 MB in the end (delta: -158.9 MB). Peak memory consumption was 637.1 MB. Max. memory is 7.1 GB. [2019-10-07 03:42:08,629 INFO L168 Benchmark]: TraceAbstraction took 22937.89 ms. Allocated memory was 915.4 MB in the beginning and 1.2 GB in the end (delta: 324.5 MB). Free memory was 261.0 MB in the beginning and 837.5 MB in the end (delta: -576.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 03:42:08,641 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2164.80 ms. Allocated memory was 145.8 MB in the beginning and 237.5 MB in the end (delta: 91.8 MB). Free memory was 92.7 MB in the beginning and 122.2 MB in the end (delta: -29.5 MB). Peak memory consumption was 76.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 261.43 ms. Allocated memory is still 237.5 MB. Free memory was 122.2 MB in the beginning and 102.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 103770.82 ms. Allocated memory was 237.5 MB in the beginning and 915.4 MB in the end (delta: 677.9 MB). Free memory was 102.1 MB in the beginning and 261.0 MB in the end (delta: -158.9 MB). Peak memory consumption was 637.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22937.89 ms. Allocated memory was 915.4 MB in the beginning and 1.2 GB in the end (delta: 324.5 MB). Free memory was 261.0 MB in the beginning and 837.5 MB in the end (delta: -576.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true; de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: assume true;: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...