/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:26:13,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:26:13,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:26:13,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:26:13,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:26:13,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:26:13,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:26:13,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:26:13,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:26:13,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:26:13,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:26:13,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:26:13,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:26:13,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:26:13,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:26:13,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:26:13,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:26:13,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:26:13,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:26:13,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:26:13,317 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:26:13,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:26:13,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:26:13,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:26:13,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:26:13,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:26:13,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:26:13,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:26:13,325 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:26:13,326 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:26:13,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:26:13,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:26:13,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:26:13,329 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:26:13,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:26:13,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:26:13,332 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:26:13,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:26:13,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:26:13,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:26:13,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:26:13,335 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 [2020-09-25 05:26:13,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:26:13,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:26:13,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:26:13,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:26:13,363 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:26:13,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:26:13,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:26:13,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:26:13,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:26:13,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:26:13,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:26:13,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:26:13,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:26:13,365 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:26:13,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:26:13,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:26:13,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:26:13,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:26:13,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:26:13,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:26:13,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:26:13,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:26:13,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:26:13,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:26:13,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:26:13,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:26:13,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:26:13,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:26:13,369 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:26:13,369 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:26:13,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:26:13,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:26:13,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:26:13,848 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:26:13,848 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:26:13,850 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-09-25 05:26:13,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40cbd76e3/ab352867568c47dab4a697f596a1132c/FLAGc6d36f088 [2020-09-25 05:26:14,453 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:26:14,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-09-25 05:26:14,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40cbd76e3/ab352867568c47dab4a697f596a1132c/FLAGc6d36f088 [2020-09-25 05:26:14,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/40cbd76e3/ab352867568c47dab4a697f596a1132c [2020-09-25 05:26:14,805 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:26:14,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:26:14,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:26:14,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:26:14,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:26:14,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:26:14" (1/1) ... [2020-09-25 05:26:14,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d48d131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:14, skipping insertion in model container [2020-09-25 05:26:14,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:26:14" (1/1) ... [2020-09-25 05:26:14,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:26:14,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:26:15,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:26:15,076 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:26:15,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:26:15,113 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:26:15,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:15 WrapperNode [2020-09-25 05:26:15,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:26:15,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:26:15,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:26:15,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:26:15,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:15" (1/1) ... [2020-09-25 05:26:15,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:15" (1/1) ... [2020-09-25 05:26:15,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:15" (1/1) ... [2020-09-25 05:26:15,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:15" (1/1) ... [2020-09-25 05:26:15,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:15" (1/1) ... [2020-09-25 05:26:15,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:15" (1/1) ... [2020-09-25 05:26:15,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:15" (1/1) ... [2020-09-25 05:26:15,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:26:15,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:26:15,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:26:15,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:26:15,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:15" (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 [2020-09-25 05:26:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:26:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:26:15,323 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-25 05:26:15,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:26:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:26:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:26:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-25 05:26:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:26:15,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:26:15,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:26:15,523 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:26:15,523 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 05:26:15,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:26:15 BoogieIcfgContainer [2020-09-25 05:26:15,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:26:15,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:26:15,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:26:15,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:26:15,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:26:14" (1/3) ... [2020-09-25 05:26:15,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30cd4aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:26:15, skipping insertion in model container [2020-09-25 05:26:15,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:26:15" (2/3) ... [2020-09-25 05:26:15,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30cd4aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:26:15, skipping insertion in model container [2020-09-25 05:26:15,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:26:15" (3/3) ... [2020-09-25 05:26:15,538 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-09-25 05:26:15,553 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:26:15,563 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:26:15,583 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:26:15,612 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:26:15,612 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:26:15,613 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:26:15,613 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:26:15,613 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:26:15,614 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:26:15,614 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:26:15,614 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:26:15,634 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-25 05:26:15,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 05:26:15,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:15,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:15,645 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:15,652 INFO L82 PathProgramCache]: Analyzing trace with hash 607163649, now seen corresponding path program 1 times [2020-09-25 05:26:15,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:15,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715318862] [2020-09-25 05:26:15,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:15,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:15,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:15,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 05:26:15,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:15,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 05:26:15,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:15,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:26:15,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 05:26:15,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:26:15,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:26:16,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:16,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:16,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:16,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:16,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 05:26:16,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:16,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:16,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:16,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:16,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 05:26:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:16,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:16,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:26:16,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:26:16,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:16,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:26:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:26:16,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:26:16,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715318862] [2020-09-25 05:26:16,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:26:16,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:26:16,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876072988] [2020-09-25 05:26:16,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:26:16,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:16,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:26:16,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:26:16,156 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-09-25 05:26:16,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:16,238 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-09-25 05:26:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:26:16,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 05:26:16,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:16,254 INFO L225 Difference]: With dead ends: 45 [2020-09-25 05:26:16,254 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 05:26:16,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:26:16,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 05:26:16,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-25 05:26:16,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 05:26:16,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 05:26:16,312 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-09-25 05:26:16,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:16,313 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 05:26:16,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:26:16,313 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 05:26:16,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 05:26:16,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:16,316 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:16,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:26:16,317 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:16,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:16,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1887435767, now seen corresponding path program 1 times [2020-09-25 05:26:16,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:16,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857005492] [2020-09-25 05:26:16,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:16,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:16,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 05:26:16,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:16,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 05:26:16,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:16,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:16,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:26:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 05:26:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 05:26:16,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:16,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:16,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:16,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:16,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 05:26:16,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:16,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:16,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:16,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:16,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 05:26:16,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:16,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:26:16,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 05:26:16,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:16,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:16,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:26:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:26:16,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:16,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 05:26:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:16,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:16,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:16,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:26:16,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:16,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 05:26:16,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:16,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:26:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:16,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:26:16,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 05:26:16,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857005492] [2020-09-25 05:26:16,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:16,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:26:16,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083560654] [2020-09-25 05:26:16,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:26:16,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:16,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:26:16,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:26:16,793 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-09-25 05:26:16,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:16,866 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-09-25 05:26:16,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 05:26:16,867 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 05:26:16,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:16,868 INFO L225 Difference]: With dead ends: 37 [2020-09-25 05:26:16,869 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 05:26:16,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:26:16,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 05:26:16,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 05:26:16,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 05:26:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-09-25 05:26:16,878 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2020-09-25 05:26:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:16,878 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-09-25 05:26:16,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:26:16,879 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-09-25 05:26:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 05:26:16,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:26:16,881 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:26:16,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:26:16,881 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:26:16,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:26:16,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1929059777, now seen corresponding path program 2 times [2020-09-25 05:26:16,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:26:16,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504777874] [2020-09-25 05:26:16,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:26:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:17,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:17,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 05:26:17,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 05:26:17,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:17,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:26:17,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 05:26:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:26:17,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:17,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:26:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:17,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:17,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:17,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 05:26:17,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:17,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 05:26:17,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:17,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:26:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:26:17,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:17,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 05:26:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:17,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:17,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:17,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 05:26:17,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:17,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 05:26:17,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:17,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:26:17,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:17,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 05:26:17,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:17,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 05:26:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:17,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:17,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:17,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:26:17,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:17,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 05:26:17,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:17,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:26:17,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:17,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 05:26:17,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:26:17,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 05:26:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:26:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:26:17,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:26:17,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:26:17,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:26:17,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:26:17,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:26:17,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:26:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:26:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:26:17,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:26:17,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:26:17,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 05:26:17,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504777874] [2020-09-25 05:26:17,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:26:17,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:26:17,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052917763] [2020-09-25 05:26:17,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:26:17,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:26:17,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:26:17,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:26:17,386 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-09-25 05:26:17,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:26:17,492 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-25 05:26:17,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:26:17,493 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 05:26:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:26:17,494 INFO L225 Difference]: With dead ends: 31 [2020-09-25 05:26:17,494 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 05:26:17,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:26:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 05:26:17,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 05:26:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 05:26:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 05:26:17,498 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-09-25 05:26:17,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:26:17,499 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 05:26:17,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:26:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 05:26:17,500 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 05:26:17,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:26:17,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 05:26:17,533 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 05:26:17,533 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:26:17,533 INFO L268 CegarLoopResult]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2020-09-25 05:26:17,533 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2020-09-25 05:26:17,533 INFO L268 CegarLoopResult]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2020-09-25 05:26:17,534 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-09-25 05:26:17,534 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 05:26:17,534 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 05:26:17,534 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-25 05:26:17,534 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-25 05:26:17,534 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 05:26:17,534 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 05:26:17,535 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 05:26:17,535 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 05:26:17,535 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 05:26:17,535 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 05:26:17,535 INFO L268 CegarLoopResult]: For program point L32(lines 32 36) no Hoare annotation was computed. [2020-09-25 05:26:17,535 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2020-09-25 05:26:17,535 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-09-25 05:26:17,536 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-25 05:26:17,536 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2020-09-25 05:26:17,536 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 05:26:17,536 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-25 05:26:17,536 INFO L268 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-09-25 05:26:17,536 INFO L268 CegarLoopResult]: For program point L31-3(line 31) no Hoare annotation was computed. [2020-09-25 05:26:17,536 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 05:26:17,536 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 05:26:17,537 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 37) no Hoare annotation was computed. [2020-09-25 05:26:17,537 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 37) no Hoare annotation was computed. [2020-09-25 05:26:17,537 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 05:26:17,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 05:26:17 BoogieIcfgContainer [2020-09-25 05:26:17,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 05:26:17,554 INFO L168 Benchmark]: Toolchain (without parser) took 2742.54 ms. Allocated memory was 148.4 MB in the beginning and 232.3 MB in the end (delta: 83.9 MB). Free memory was 103.1 MB in the beginning and 147.9 MB in the end (delta: -44.8 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2020-09-25 05:26:17,556 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 05:26:17,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.70 ms. Allocated memory is still 148.4 MB. Free memory was 102.4 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:26:17,559 INFO L168 Benchmark]: Boogie Preprocessor took 129.59 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 93.2 MB in the beginning and 183.2 MB in the end (delta: -90.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:26:17,560 INFO L168 Benchmark]: RCFGBuilder took 282.95 ms. Allocated memory is still 203.9 MB. Free memory was 183.2 MB in the beginning and 170.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-25 05:26:17,567 INFO L168 Benchmark]: TraceAbstraction took 2017.70 ms. Allocated memory was 203.9 MB in the beginning and 232.3 MB in the end (delta: 28.3 MB). Free memory was 169.9 MB in the beginning and 147.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. [2020-09-25 05:26:17,578 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.70 ms. Allocated memory is still 148.4 MB. Free memory was 102.4 MB in the beginning and 93.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.59 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 93.2 MB in the beginning and 183.2 MB in the end (delta: -90.1 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 282.95 ms. Allocated memory is still 203.9 MB. Free memory was 183.2 MB in the beginning and 170.5 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2017.70 ms. Allocated memory was 203.9 MB in the beginning and 232.3 MB in the end (delta: 28.3 MB). Free memory was 169.9 MB in the beginning and 147.9 MB in the end (delta: 22.0 MB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: 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 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 9 SDslu, 301 SDs, 0 SdLazy, 79 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 4384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 14/20 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...