/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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/ddlm2013.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:43:31,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:43:31,223 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:43:31,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:43:31,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:43:31,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:43:31,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:43:31,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:43:31,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:43:31,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:43:31,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:43:31,258 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:43:31,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:43:31,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:43:31,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:43:31,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:43:31,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:43:31,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:43:31,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:43:31,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:43:31,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:43:31,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:43:31,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:43:31,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:43:31,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:43:31,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:43:31,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:43:31,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:43:31,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:43:31,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:43:31,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:43:31,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:43:31,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:43:31,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:43:31,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:43:31,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:43:31,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:43:31,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:43:31,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:43:31,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:43:31,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:43:31,287 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 [2020-09-24 20:43:31,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:43:31,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:43:31,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:43:31,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:43:31,326 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:43:31,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:43:31,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:43:31,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:43:31,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:43:31,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:43:31,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:43:31,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:43:31,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:43:31,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:43:31,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:43:31,331 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:43:31,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:43:31,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:43:31,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:43:31,332 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:43:31,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:43:31,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:43:31,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:43:31,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:43:31,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:43:31,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:43:31,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:43:31,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:43:31,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:43:31,334 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 -> SingleStatement 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; 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; 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; 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; 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; [2020-09-24 20:43:31,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:43:31,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:43:31,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:43:31,840 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:43:31,841 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:43:31,842 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-09-24 20:43:31,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6065fba07/9b0ac261778f42c4bd44e94402b8c4eb/FLAG4834d348f [2020-09-24 20:43:32,470 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:43:32,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/ddlm2013.i [2020-09-24 20:43:32,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6065fba07/9b0ac261778f42c4bd44e94402b8c4eb/FLAG4834d348f [2020-09-24 20:43:32,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6065fba07/9b0ac261778f42c4bd44e94402b8c4eb [2020-09-24 20:43:32,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:43:32,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:43:32,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:43:32,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:43:32,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:43:32,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:43:32" (1/1) ... [2020-09-24 20:43:32,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@559bd822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:32, skipping insertion in model container [2020-09-24 20:43:32,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:43:32" (1/1) ... [2020-09-24 20:43:32,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:43:32,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:43:33,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:43:33,109 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:43:33,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:43:33,143 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:43:33,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:33 WrapperNode [2020-09-24 20:43:33,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:43:33,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:43:33,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:43:33,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:43:33,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:33" (1/1) ... [2020-09-24 20:43:33,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:33" (1/1) ... [2020-09-24 20:43:33,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:33" (1/1) ... [2020-09-24 20:43:33,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:33" (1/1) ... [2020-09-24 20:43:33,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:33" (1/1) ... [2020-09-24 20:43:33,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:33" (1/1) ... [2020-09-24 20:43:33,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:33" (1/1) ... [2020-09-24 20:43:33,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:43:33,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:43:33,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:43:33,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:43:33,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:33" (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 [2020-09-24 20:43:33,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:43:33,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:43:33,334 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 20:43:33,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:43:33,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:43:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:43:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:43:33,335 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 20:43:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:43:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:43:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:43:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:43:33,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:43:33,604 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:43:33,604 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:43:33,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:43:33 BoogieIcfgContainer [2020-09-24 20:43:33,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:43:33,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:43:33,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:43:33,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:43:33,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:43:32" (1/3) ... [2020-09-24 20:43:33,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd95a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:43:33, skipping insertion in model container [2020-09-24 20:43:33,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:43:33" (2/3) ... [2020-09-24 20:43:33,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cd95a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:43:33, skipping insertion in model container [2020-09-24 20:43:33,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:43:33" (3/3) ... [2020-09-24 20:43:33,620 INFO L109 eAbstractionObserver]: Analyzing ICFG ddlm2013.i [2020-09-24 20:43:33,634 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:43:33,644 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:43:33,668 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:43:33,701 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:43:33,702 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:43:33,702 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:43:33,702 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:43:33,702 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:43:33,702 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:43:33,702 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:43:33,702 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:43:33,724 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-24 20:43:33,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-24 20:43:33,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:33,733 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:43:33,734 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:33,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:33,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1686675663, now seen corresponding path program 1 times [2020-09-24 20:43:33,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:33,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206723089] [2020-09-24 20:43:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:33,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:34,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:34,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 20:43:34,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:43:34,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-09-24 20:43:34,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:43:34,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:43:34,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:43:34,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 20:43:34,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:34,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:34,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:34,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:34,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:34,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:43:34,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:34,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:34,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:34,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:34,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:34,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206723089] [2020-09-24 20:43:34,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:34,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:43:34,514 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29423842] [2020-09-24 20:43:34,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:43:34,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:34,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:43:34,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:43:34,540 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 6 states. [2020-09-24 20:43:34,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:34,682 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-09-24 20:43:34,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:43:34,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-09-24 20:43:34,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:34,696 INFO L225 Difference]: With dead ends: 72 [2020-09-24 20:43:34,696 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 20:43:34,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:43:34,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 20:43:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-09-24 20:43:34,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-24 20:43:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-09-24 20:43:34,752 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 22 [2020-09-24 20:43:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:34,752 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-09-24 20:43:34,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:43:34,753 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-09-24 20:43:34,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:43:34,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:34,755 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:43:34,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:43:34,756 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:34,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:34,757 INFO L82 PathProgramCache]: Analyzing trace with hash -579098768, now seen corresponding path program 1 times [2020-09-24 20:43:34,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:34,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670564082] [2020-09-24 20:43:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:34,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:35,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:35,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 20:43:35,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:35,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-09-24 20:43:35,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:43:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:43:35,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 20:43:35,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:35,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:35,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:35,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:35,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:43:35,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:35,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:35,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:35,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670564082] [2020-09-24 20:43:35,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:35,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:43:35,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529320376] [2020-09-24 20:43:35,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:43:35,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:35,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:43:35,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:43:35,600 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 11 states. [2020-09-24 20:43:35,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:35,890 INFO L93 Difference]: Finished difference Result 67 states and 70 transitions. [2020-09-24 20:43:35,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:43:35,891 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-24 20:43:35,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:35,893 INFO L225 Difference]: With dead ends: 67 [2020-09-24 20:43:35,893 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 20:43:35,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:43:35,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 20:43:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-09-24 20:43:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 20:43:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-09-24 20:43:35,904 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 34 [2020-09-24 20:43:35,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:35,905 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-09-24 20:43:35,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:43:35,905 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-09-24 20:43:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:43:35,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:35,907 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:43:35,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:43:35,907 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:35,908 INFO L82 PathProgramCache]: Analyzing trace with hash -44019760, now seen corresponding path program 1 times [2020-09-24 20:43:35,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:35,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366342824] [2020-09-24 20:43:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:35,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:35,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:36,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:36,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 20:43:36,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:43:36,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-09-24 20:43:36,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:43:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:43:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:43:36,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:36,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:36,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:36,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:36,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:36,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:36,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:43:36,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:36,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:36,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366342824] [2020-09-24 20:43:36,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:36,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:43:36,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166377212] [2020-09-24 20:43:36,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:43:36,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:36,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:43:36,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:43:36,294 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 4 states. [2020-09-24 20:43:36,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:36,346 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2020-09-24 20:43:36,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:43:36,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-09-24 20:43:36,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:36,353 INFO L225 Difference]: With dead ends: 95 [2020-09-24 20:43:36,353 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 20:43:36,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:43:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 20:43:36,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-09-24 20:43:36,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 20:43:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2020-09-24 20:43:36,365 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 34 [2020-09-24 20:43:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:36,366 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2020-09-24 20:43:36,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:43:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2020-09-24 20:43:36,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-24 20:43:36,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:36,368 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 20:43:36,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:43:36,368 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:36,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:36,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1711187313, now seen corresponding path program 1 times [2020-09-24 20:43:36,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:36,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069275605] [2020-09-24 20:43:36,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:36,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:36,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:36,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-24 20:43:36,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:36,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 20:43:36,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:36,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:43:36,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 20:43:36,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:43:36,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:36,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:36,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:36,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:36,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:36,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:36,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:43:36,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:43:36,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069275605] [2020-09-24 20:43:36,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:36,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:43:36,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510457102] [2020-09-24 20:43:36,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:43:36,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:36,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:43:36,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:43:36,472 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 3 states. [2020-09-24 20:43:36,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:36,481 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2020-09-24 20:43:36,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:43:36,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-09-24 20:43:36,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:36,483 INFO L225 Difference]: With dead ends: 81 [2020-09-24 20:43:36,483 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 20:43:36,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:43:36,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 20:43:36,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-24 20:43:36,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 20:43:36,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-09-24 20:43:36,490 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 36 [2020-09-24 20:43:36,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:36,491 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-09-24 20:43:36,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:43:36,491 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-09-24 20:43:36,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 20:43:36,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:36,493 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-24 20:43:36,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:43:36,493 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:36,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:36,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1122436602, now seen corresponding path program 2 times [2020-09-24 20:43:36,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:36,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120426237] [2020-09-24 20:43:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:36,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:37,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:37,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 20:43:37,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:37,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 621 [2020-09-24 20:43:37,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:37,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:43:37,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:43:37,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:43:37,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:37,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:37,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:37,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:37,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:37,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:37,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:43:37,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:37,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:37,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:43:37,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120426237] [2020-09-24 20:43:37,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:43:37,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 20:43:37,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482990750] [2020-09-24 20:43:37,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 20:43:37,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:37,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 20:43:37,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:43:37,515 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 15 states. [2020-09-24 20:43:38,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:38,059 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2020-09-24 20:43:38,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:43:38,059 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-09-24 20:43:38,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:38,061 INFO L225 Difference]: With dead ends: 81 [2020-09-24 20:43:38,061 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 20:43:38,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-09-24 20:43:38,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 20:43:38,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 51. [2020-09-24 20:43:38,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 20:43:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2020-09-24 20:43:38,068 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 44 [2020-09-24 20:43:38,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:38,068 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2020-09-24 20:43:38,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 20:43:38,069 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2020-09-24 20:43:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 20:43:38,070 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:43:38,070 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-24 20:43:38,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:43:38,071 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:43:38,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:43:38,071 INFO L82 PathProgramCache]: Analyzing trace with hash 937303643, now seen corresponding path program 1 times [2020-09-24 20:43:38,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:43:38,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986924798] [2020-09-24 20:43:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:43:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:38,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:38,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:38,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:43:38,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:43:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-24 20:43:38,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:38,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:43:38,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 20:43:38,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 20:43:38,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:43:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:43:38,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:43:38,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:43:38,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:43:38,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:43:38,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:43:38,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:43:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:43:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:43:38,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:43:38,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:43:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 20:43:38,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986924798] [2020-09-24 20:43:38,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:43:38,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 20:43:38,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867040956] [2020-09-24 20:43:38,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 20:43:38,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:43:38,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 20:43:38,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:43:38,463 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 4 states. [2020-09-24 20:43:38,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:43:38,479 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-09-24 20:43:38,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 20:43:38,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 20:43:38,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:43:38,480 INFO L225 Difference]: With dead ends: 59 [2020-09-24 20:43:38,481 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 20:43:38,481 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-24 20:43:38,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 20:43:38,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 20:43:38,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 20:43:38,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 20:43:38,482 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-09-24 20:43:38,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:43:38,483 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 20:43:38,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 20:43:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 20:43:38,483 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 20:43:38,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:43:38,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 20:43:38,567 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 20:43:38,567 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:43:38,567 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 20:43:38,567 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 20:43:38,567 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 20:43:38,567 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 20:43:38,568 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-24 20:43:38,568 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-24 20:43:38,568 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-24 20:43:38,568 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-24 20:43:38,568 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-24 20:43:38,568 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 20:43:38,569 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-24 20:43:38,569 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-24 20:43:38,569 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 20:43:38,569 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 38) no Hoare annotation was computed. [2020-09-24 20:43:38,569 INFO L268 CegarLoopResult]: For program point L19(lines 19 23) no Hoare annotation was computed. [2020-09-24 20:43:38,569 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 20:43:38,569 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 20:43:38,570 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 20:43:38,570 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-24 20:43:38,570 INFO L268 CegarLoopResult]: For program point L28-2(lines 13 38) no Hoare annotation was computed. [2020-09-24 20:43:38,570 INFO L268 CegarLoopResult]: For program point L24(lines 24 33) no Hoare annotation was computed. [2020-09-24 20:43:38,570 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 20:43:38,570 INFO L268 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-09-24 20:43:38,570 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 20:43:38,571 INFO L268 CegarLoopResult]: For program point L24-4(lines 13 38) no Hoare annotation was computed. [2020-09-24 20:43:38,571 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 20:43:38,571 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 20:43:38,571 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 20:43:38,571 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-24 20:43:38,571 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 20:43:38,572 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 20:43:38,572 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 38) no Hoare annotation was computed. [2020-09-24 20:43:38,572 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-09-24 20:43:38,572 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 38) the Hoare annotation is: true [2020-09-24 20:43:38,572 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 20:43:38,572 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 20:43:38,572 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 20:43:38,573 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 20:43:38,573 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 20:43:38,573 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 20:43:38,573 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse3 (div main_~a~0 4294967296)) (.cse2 (div main_~b~0 4294967296))) (or (let ((.cse1 (* 4294967296 .cse3)) (.cse0 (+ (* 4294967296 .cse2) main_~a~0))) (and (<= main_~b~0 main_~a~0) (< .cse0 (+ .cse1 main_~b~0 1)) (<= (+ .cse1 main_~b~0) .cse0))) (and (<= 0 main_~a~0) (<= main_~a~0 0) (= (+ (* .cse3 4294967296) main_~b~0) (+ (* .cse2 4294967296) main_~a~0))))) [2020-09-24 20:43:38,573 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-24 20:43:38,574 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-24 20:43:38,574 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 20:43:38,574 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-24 20:43:38,574 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-24 20:43:38,574 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-24 20:43:38,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:43:38 BoogieIcfgContainer [2020-09-24 20:43:38,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:43:38,585 INFO L168 Benchmark]: Toolchain (without parser) took 5744.75 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 103.3 MB in the beginning and 110.7 MB in the end (delta: -7.4 MB). Peak memory consumption was 100.1 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:38,586 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 20:43:38,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.82 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 93.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:38,588 INFO L168 Benchmark]: Boogie Preprocessor took 114.23 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.1 MB in the beginning and 181.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:38,589 INFO L168 Benchmark]: RCFGBuilder took 351.75 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 165.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:38,590 INFO L168 Benchmark]: TraceAbstraction took 4969.83 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 165.3 MB in the beginning and 110.7 MB in the end (delta: 54.6 MB). Peak memory consumption was 99.7 MB. Max. memory is 7.1 GB. [2020-09-24 20:43:38,593 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.82 ms. Allocated memory is still 140.0 MB. Free memory was 102.6 MB in the beginning and 93.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.23 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 93.1 MB in the beginning and 181.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.75 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 165.9 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4969.83 ms. Allocated memory was 202.4 MB in the beginning and 247.5 MB in the end (delta: 45.1 MB). Free memory was 165.3 MB in the beginning and 110.7 MB in the end (delta: 54.6 MB). Peak memory consumption was 99.7 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 237 SDtfs, 164 SDslu, 788 SDs, 0 SdLazy, 343 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=3, 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, 45 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 13 PreInvPairs, 17 NumberOfFragments, 63 HoareAnnotationTreeSize, 13 FomulaSimplifications, 23 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 59400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 17/33 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...