/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:19:56,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:19:56,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:19:56,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:19:56,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:19:56,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:19:56,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:19:56,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:19:56,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:19:56,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:19:56,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:19:56,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:19:56,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:19:56,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:19:56,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:19:56,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:19:56,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:19:56,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:19:56,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:19:56,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:19:56,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:19:56,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:19:56,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:19:56,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:19:56,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:19:56,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:19:56,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:19:56,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:19:56,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:19:56,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:19:56,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:19:56,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:19:56,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:19:56,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:19:56,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:19:56,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:19:56,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:19:56,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:19:56,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:19:56,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:19:56,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:19:56,312 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 16:19:56,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:19:56,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:19:56,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:19:56,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:19:56,352 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:19:56,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:19:56,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:19:56,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:19:56,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:19:56,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:19:56,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:19:56,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:19:56,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:19:56,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:19:56,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:19:56,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:19:56,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:19:56,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:19:56,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:19:56,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:19:56,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:19:56,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:19:56,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:19:56,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:19:56,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:19:56,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:19:56,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:19:56,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:19:56,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:19:56,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:19:56,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:19:56,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:19:56,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:19:56,673 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:19:56,673 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:19:56,674 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-10-12 16:19:56,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72f495333/62080df39e5248a78d37882d7d85a5ec/FLAGa6af4406c [2020-10-12 16:19:57,222 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:19:57,222 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt4.c [2020-10-12 16:19:57,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72f495333/62080df39e5248a78d37882d7d85a5ec/FLAGa6af4406c [2020-10-12 16:19:57,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/72f495333/62080df39e5248a78d37882d7d85a5ec [2020-10-12 16:19:57,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:19:57,612 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:19:57,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:19:57,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:19:57,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:19:57,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:19:57" (1/1) ... [2020-10-12 16:19:57,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4815436f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:57, skipping insertion in model container [2020-10-12 16:19:57,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:19:57" (1/1) ... [2020-10-12 16:19:57,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:19:57,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:19:57,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:19:57,823 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:19:57,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:19:57,860 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:19:57,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:57 WrapperNode [2020-10-12 16:19:57,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:19:57,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:19:57,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:19:57,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:19:57,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:57" (1/1) ... [2020-10-12 16:19:57,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:57" (1/1) ... [2020-10-12 16:19:57,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:57" (1/1) ... [2020-10-12 16:19:57,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:57" (1/1) ... [2020-10-12 16:19:57,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:57" (1/1) ... [2020-10-12 16:19:57,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:57" (1/1) ... [2020-10-12 16:19:57,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:57" (1/1) ... [2020-10-12 16:19:57,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:19:57,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:19:57,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:19:57,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:19:57,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 16:19:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:19:58,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:19:58,038 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 16:19:58,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:19:58,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:19:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:19:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 16:19:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 16:19:58,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:19:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 16:19:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:19:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:19:58,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:19:58,252 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:19:58,252 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:19:58,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:19:58 BoogieIcfgContainer [2020-10-12 16:19:58,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:19:58,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:19:58,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:19:58,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:19:58,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:19:57" (1/3) ... [2020-10-12 16:19:58,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6d3409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:19:58, skipping insertion in model container [2020-10-12 16:19:58,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:19:57" (2/3) ... [2020-10-12 16:19:58,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6d3409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:19:58, skipping insertion in model container [2020-10-12 16:19:58,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:19:58" (3/3) ... [2020-10-12 16:19:58,265 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt4.c [2020-10-12 16:19:58,276 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:19:58,283 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:19:58,298 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:19:58,335 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:19:58,335 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:19:58,336 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:19:58,336 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:19:58,336 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:19:58,336 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:19:58,337 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:19:58,337 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:19:58,365 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-12 16:19:58,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 16:19:58,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:58,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:58,374 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:58,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:58,380 INFO L82 PathProgramCache]: Analyzing trace with hash -12471351, now seen corresponding path program 1 times [2020-10-12 16:19:58,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:58,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481612952] [2020-10-12 16:19:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:58,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:58,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:58,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 16:19:58,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-12 16:19:58,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:19:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:19:58,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:19:58,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 16:19:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:19:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:59,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:59,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:59,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:19:59,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:59,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:19:59,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:59,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:19:59,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:19:59,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:19:59,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:19:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:19:59,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481612952] [2020-10-12 16:19:59,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:19:59,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 16:19:59,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694161914] [2020-10-12 16:19:59,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 16:19:59,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:19:59,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 16:19:59,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:19:59,045 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2020-10-12 16:19:59,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:19:59,328 INFO L93 Difference]: Finished difference Result 48 states and 62 transitions. [2020-10-12 16:19:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:19:59,330 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-12 16:19:59,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:19:59,342 INFO L225 Difference]: With dead ends: 48 [2020-10-12 16:19:59,342 INFO L226 Difference]: Without dead ends: 21 [2020-10-12 16:19:59,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-12 16:19:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-12 16:19:59,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-10-12 16:19:59,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-12 16:19:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2020-10-12 16:19:59,393 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2020-10-12 16:19:59,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:19:59,394 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2020-10-12 16:19:59,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 16:19:59,394 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2020-10-12 16:19:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 16:19:59,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:19:59,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:19:59,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:19:59,396 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:19:59,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:19:59,397 INFO L82 PathProgramCache]: Analyzing trace with hash -793409467, now seen corresponding path program 1 times [2020-10-12 16:19:59,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:19:59,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062762224] [2020-10-12 16:19:59,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:19:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:19:59,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:19:59,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:19:59,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 16:19:59,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:19:59,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-12 16:19:59,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:19:59,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 16:19:59,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:19:59,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 16:19:59,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:20:00,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:00,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:00,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:00,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:00,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:00,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:20:00,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:00,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:00,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:00,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:00,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:00,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062762224] [2020-10-12 16:20:00,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:00,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 16:20:00,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027141327] [2020-10-12 16:20:00,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 16:20:00,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:00,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 16:20:00,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-12 16:20:00,102 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand 8 states. [2020-10-12 16:20:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:00,367 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2020-10-12 16:20:00,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 16:20:00,369 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-12 16:20:00,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:00,370 INFO L225 Difference]: With dead ends: 37 [2020-10-12 16:20:00,370 INFO L226 Difference]: Without dead ends: 24 [2020-10-12 16:20:00,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-12 16:20:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-12 16:20:00,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-10-12 16:20:00,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-12 16:20:00,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2020-10-12 16:20:00,387 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2020-10-12 16:20:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:00,388 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2020-10-12 16:20:00,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 16:20:00,388 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2020-10-12 16:20:00,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 16:20:00,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:00,390 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:00,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:20:00,391 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:00,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:00,391 INFO L82 PathProgramCache]: Analyzing trace with hash 117019209, now seen corresponding path program 2 times [2020-10-12 16:20:00,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:00,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149949056] [2020-10-12 16:20:00,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:00,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:00,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:00,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 16:20:00,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:20:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-12 16:20:00,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:20:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 16:20:00,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 16:20:00,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:04,798 WARN L193 SmtUtils]: Spent 3.95 s on a formula simplification. DAG size of input: 36 DAG size of output: 13 [2020-10-12 16:20:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:04,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:04,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:04,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:04,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 16:20:04,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:04,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:04,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:04,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149949056] [2020-10-12 16:20:04,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:20:04,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:20:04,821 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155129920] [2020-10-12 16:20:04,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:20:04,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:04,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:20:04,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:20:04,823 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand 5 states. [2020-10-12 16:20:04,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:04,960 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-10-12 16:20:04,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:20:04,961 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-12 16:20:04,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:04,964 INFO L225 Difference]: With dead ends: 35 [2020-10-12 16:20:04,965 INFO L226 Difference]: Without dead ends: 25 [2020-10-12 16:20:04,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:20:04,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-12 16:20:04,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-12 16:20:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 16:20:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-12 16:20:04,981 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2020-10-12 16:20:04,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:04,982 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-12 16:20:04,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:20:04,982 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-12 16:20:04,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 16:20:04,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:04,984 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:04,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 16:20:04,985 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:04,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:04,985 INFO L82 PathProgramCache]: Analyzing trace with hash -367783497, now seen corresponding path program 1 times [2020-10-12 16:20:04,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:04,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721800997] [2020-10-12 16:20:04,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:05,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:05,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:05,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 16:20:05,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:05,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-12 16:20:05,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:20:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:05,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 16:20:05,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:05,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:05,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:05,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:05,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:05,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:05,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:05,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721800997] [2020-10-12 16:20:05,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:05,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 16:20:05,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917479111] [2020-10-12 16:20:05,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:20:05,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:05,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:20:05,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:20:05,288 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 5 states. [2020-10-12 16:20:09,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:09,566 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-10-12 16:20:09,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:20:09,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-12 16:20:09,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:09,567 INFO L225 Difference]: With dead ends: 41 [2020-10-12 16:20:09,568 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 16:20:09,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:20:09,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 16:20:09,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-12 16:20:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-12 16:20:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-12 16:20:09,576 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 19 [2020-10-12 16:20:09,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:09,576 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-12 16:20:09,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:20:09,576 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-12 16:20:09,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:20:09,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:09,577 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:09,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 16:20:09,578 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:09,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:09,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1925752910, now seen corresponding path program 1 times [2020-10-12 16:20:09,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:09,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183710933] [2020-10-12 16:20:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:09,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:09,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:09,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:09,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 16:20:09,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 16:20:09,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-12 16:20:09,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:20:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-12 16:20:09,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:09,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:09,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:09,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:09,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:09,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:09,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:09,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:09,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:09,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:09,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:20:09,846 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:20:09,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183710933] [2020-10-12 16:20:09,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 16:20:09,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 16:20:09,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376896543] [2020-10-12 16:20:09,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:20:09,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:09,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:20:09,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:20:09,849 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2020-10-12 16:20:09,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:09,953 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-10-12 16:20:09,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:20:09,953 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-12 16:20:09,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:09,954 INFO L225 Difference]: With dead ends: 41 [2020-10-12 16:20:09,954 INFO L226 Difference]: Without dead ends: 28 [2020-10-12 16:20:09,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:20:09,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-12 16:20:09,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-12 16:20:09,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-12 16:20:09,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-12 16:20:09,968 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 20 [2020-10-12 16:20:09,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:09,969 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-12 16:20:09,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:20:09,969 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-12 16:20:09,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 16:20:09,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:20:09,972 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:20:09,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 16:20:09,973 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:20:09,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:20:09,973 INFO L82 PathProgramCache]: Analyzing trace with hash -594207024, now seen corresponding path program 1 times [2020-10-12 16:20:09,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:20:09,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43481324] [2020-10-12 16:20:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:20:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:10,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:10,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 16:20:10,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:10,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-12 16:20:10,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 16:20:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:20:10,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 16:20:10,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:10,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:20:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:20:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:20:10,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:20:10,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:20:10,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:20:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 16:20:10,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:20:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:20:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:20:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:20:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 16:20:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-12 16:20:10,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43481324] [2020-10-12 16:20:10,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:20:10,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 16:20:10,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982616668] [2020-10-12 16:20:10,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 16:20:10,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:20:10,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 16:20:10,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:20:10,445 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 7 states. [2020-10-12 16:20:10,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:20:10,561 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2020-10-12 16:20:10,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 16:20:10,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-12 16:20:10,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:20:10,562 INFO L225 Difference]: With dead ends: 27 [2020-10-12 16:20:10,562 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 16:20:10,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-12 16:20:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 16:20:10,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 16:20:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 16:20:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 16:20:10,564 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-12 16:20:10,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:20:10,564 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 16:20:10,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 16:20:10,564 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 16:20:10,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 16:20:10,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 16:20:10,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 16:20:10,712 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:20:10,712 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-10-12 16:20:10,713 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:20:10,713 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:20:10,713 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 16:20:10,713 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 16:20:10,713 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:20:10,713 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:20:10,713 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-12 16:20:10,713 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:20:10,714 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-10-12 16:20:10,714 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-10-12 16:20:10,714 INFO L268 CegarLoopResult]: For program point L25(lines 25 28) no Hoare annotation was computed. [2020-10-12 16:20:10,714 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 33) no Hoare annotation was computed. [2020-10-12 16:20:10,714 INFO L268 CegarLoopResult]: For program point L23(lines 23 28) no Hoare annotation was computed. [2020-10-12 16:20:10,714 INFO L268 CegarLoopResult]: For program point L25-2(lines 21 28) no Hoare annotation was computed. [2020-10-12 16:20:10,714 INFO L268 CegarLoopResult]: For program point L21(lines 21 28) no Hoare annotation was computed. [2020-10-12 16:20:10,715 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 30) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0))) (and (<= .cse0 main_~l~0) (<= main_~l~0 .cse0))) [2020-10-12 16:20:10,715 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 30) the Hoare annotation is: (let ((.cse1 (div main_~l~0 4294967296)) (.cse0 (div (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0) 4294967296))) (let ((.cse3 (+ (* 4294967296 .cse0) main_~l~0)) (.cse2 (* 4294967296 .cse1))) (and (<= .cse0 .cse1) (<= (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0 .cse2) .cse3) (< .cse3 (+ main_~i~0 main_~j~0 main_~k~0 main_~v4~0 .cse2 1))))) [2020-10-12 16:20:10,715 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 33) no Hoare annotation was computed. [2020-10-12 16:20:10,715 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 33) the Hoare annotation is: true [2020-10-12 16:20:10,716 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-12 16:20:10,716 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-10-12 16:20:10,716 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-12 16:20:10,716 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-12 16:20:10,716 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-12 16:20:10,716 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-10-12 16:20:10,716 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-10-12 16:20:10,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:20:10 BoogieIcfgContainer [2020-10-12 16:20:10,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:20:10,737 INFO L168 Benchmark]: Toolchain (without parser) took 13125.39 ms. Allocated memory was 141.0 MB in the beginning and 272.1 MB in the end (delta: 131.1 MB). Free memory was 104.6 MB in the beginning and 233.6 MB in the end (delta: -129.0 MB). Peak memory consumption was 107.4 MB. Max. memory is 7.1 GB. [2020-10-12 16:20:10,738 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 16:20:10,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.12 ms. Allocated memory is still 141.0 MB. Free memory was 104.4 MB in the beginning and 94.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-10-12 16:20:10,739 INFO L168 Benchmark]: Boogie Preprocessor took 109.63 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.6 MB in the beginning and 182.7 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-10-12 16:20:10,740 INFO L168 Benchmark]: RCFGBuilder took 286.11 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 168.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:20:10,741 INFO L168 Benchmark]: TraceAbstraction took 12476.14 ms. Allocated memory was 203.9 MB in the beginning and 272.1 MB in the end (delta: 68.2 MB). Free memory was 167.8 MB in the beginning and 233.6 MB in the end (delta: -65.7 MB). Peak memory consumption was 107.8 MB. Max. memory is 7.1 GB. [2020-10-12 16:20:10,745 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.12 ms. Allocated memory is still 141.0 MB. Free memory was 104.4 MB in the beginning and 94.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.63 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 94.6 MB in the beginning and 182.7 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.11 ms. Allocated memory is still 203.9 MB. Free memory was 182.7 MB in the beginning and 168.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12476.14 ms. Allocated memory was 203.9 MB in the beginning and 272.1 MB in the end (delta: 68.2 MB). Free memory was 167.8 MB in the beginning and 233.6 MB in the end (delta: -65.7 MB). Peak memory consumption was 107.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: i + j + k + v4 <= l && l <= i + j + k + v4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 12.2s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 139 SDslu, 126 SDs, 0 SdLazy, 304 SolverSat, 46 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 79 HoareAnnotationTreeSize, 14 FomulaSimplifications, 324 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 116 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 14528 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 16/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...