/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 interpolation-heuristic=FIRST --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-simple/id2_b3_o5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:58:45,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:58:45,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:58:45,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:58:45,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:58:45,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:58:45,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:58:45,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:58:45,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:58:45,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:58:45,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:58:45,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:58:45,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:58:45,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:58:45,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:58:45,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:58:45,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:58:45,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:58:45,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:58:45,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:58:45,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:58:45,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:58:45,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:58:45,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:58:45,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:58:45,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:58:45,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:58:45,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:58:45,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:58:45,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:58:45,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:58:45,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:58:45,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:58:45,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:58:45,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:58:45,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:58:45,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:58:45,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:58:45,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:58:45,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:58:45,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:58:45,244 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 15:58:45,271 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:58:45,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:58:45,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:58:45,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:58:45,273 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:58:45,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:58:45,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:58:45,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:58:45,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:58:45,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:58:45,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:58:45,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:58:45,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:58:45,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:58:45,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:58:45,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:58:45,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:58:45,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:58:45,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:58:45,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:58:45,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:58:45,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:58:45,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:58:45,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:58:45,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:58:45,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:58:45,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:58:45,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:58:45,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:58:45,281 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:58:45,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:58:45,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:58:45,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:58:45,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:58:45,779 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:58:45,780 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b3_o5.c [2020-09-24 15:58:45,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/966caeffa/191701bc031640b0921e8e122066f23e/FLAGb66f45631 [2020-09-24 15:58:46,470 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:58:46,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b3_o5.c [2020-09-24 15:58:46,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/966caeffa/191701bc031640b0921e8e122066f23e/FLAGb66f45631 [2020-09-24 15:58:46,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/966caeffa/191701bc031640b0921e8e122066f23e [2020-09-24 15:58:46,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:58:46,857 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:58:46,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:46,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:58:46,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:58:46,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:46" (1/1) ... [2020-09-24 15:58:46,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d1eb664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:46, skipping insertion in model container [2020-09-24 15:58:46,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:46" (1/1) ... [2020-09-24 15:58:46,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:58:46,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:58:47,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:47,137 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:58:47,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:47,178 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:58:47,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47 WrapperNode [2020-09-24 15:58:47,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:47,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:58:47,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:58:47,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:58:47,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (1/1) ... [2020-09-24 15:58:47,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:58:47,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:58:47,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:58:47,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:58:47,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (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 15:58:47,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:58:47,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:58:47,401 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 15:58:47,401 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-24 15:58:47,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:58:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 15:58:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:58:47,402 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 15:58:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-24 15:58:47,403 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:58:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:58:47,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:58:47,628 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:58:47,628 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:58:47,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:47 BoogieIcfgContainer [2020-09-24 15:58:47,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:58:47,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:58:47,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:58:47,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:58:47,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:58:46" (1/3) ... [2020-09-24 15:58:47,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574e0afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:47, skipping insertion in model container [2020-09-24 15:58:47,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:47" (2/3) ... [2020-09-24 15:58:47,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@574e0afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:47, skipping insertion in model container [2020-09-24 15:58:47,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:47" (3/3) ... [2020-09-24 15:58:47,648 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b3_o5.c [2020-09-24 15:58:47,671 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:58:47,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:58:47,745 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:58:47,807 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:58:47,808 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:58:47,808 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:58:47,808 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:58:47,808 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:58:47,808 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:58:47,809 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:58:47,809 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:58:47,832 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-24 15:58:47,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 15:58:47,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:47,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:47,841 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:47,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:47,848 INFO L82 PathProgramCache]: Analyzing trace with hash 875745540, now seen corresponding path program 1 times [2020-09-24 15:58:47,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:47,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178169653] [2020-09-24 15:58:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:48,040 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:48,041 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:48,041 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:48,042 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:48,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 15:58:48,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:48,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 15:58:48,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 15:58:48,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:48,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:48,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:48,165 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:48,165 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:48,165 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:48,166 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:48,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:48,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:48,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:48,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:48,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:48,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:48,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:48,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:48,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:48,184 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:48,184 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:48,184 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:48,185 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:48,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:48,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:58:48,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:48,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:48,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:48,215 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 15:58:48,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178169653] [2020-09-24 15:58:48,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:48,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:48,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756512136] [2020-09-24 15:58:48,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:48,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:48,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:48,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:48,249 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-09-24 15:58:48,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:48,358 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-24 15:58:48,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:58:48,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 15:58:48,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:48,374 INFO L225 Difference]: With dead ends: 51 [2020-09-24 15:58:48,374 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 15:58:48,379 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 [2020-09-24 15:58:48,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 15:58:48,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-24 15:58:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 15:58:48,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-24 15:58:48,431 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-09-24 15:58:48,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:48,432 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-24 15:58:48,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:48,432 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-24 15:58:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 15:58:48,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:48,435 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, 1, 1, 1] [2020-09-24 15:58:48,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:58:48,435 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:48,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:48,436 INFO L82 PathProgramCache]: Analyzing trace with hash 71846672, now seen corresponding path program 1 times [2020-09-24 15:58:48,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:48,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747821167] [2020-09-24 15:58:48,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:48,499 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:48,499 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:48,499 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:48,500 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:48,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 15:58:48,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:48,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 15:58:48,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:48,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 15:58:48,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 15:58:48,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:48,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:48,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:48,586 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:48,587 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:48,587 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:48,587 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:48,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:48,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:48,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:48,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:48,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:48,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:48,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:48,619 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:48,619 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:48,620 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:48,620 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:48,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:48,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:48,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:58:48,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:48,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:48,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:48,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:48,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:48,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:48,723 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:48,723 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:48,723 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:48,724 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:48,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:48,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:48,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:58:48,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:48,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:48,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:48,749 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 15:58:48,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747821167] [2020-09-24 15:58:48,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:48,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 15:58:48,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458977211] [2020-09-24 15:58:48,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:58:48,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:48,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:58:48,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:58:48,754 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-09-24 15:58:48,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:48,890 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-09-24 15:58:48,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:58:48,891 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-24 15:58:48,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:48,893 INFO L225 Difference]: With dead ends: 66 [2020-09-24 15:58:48,894 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 15:58:48,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:58:48,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 15:58:48,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 15:58:48,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 15:58:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-24 15:58:48,916 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2020-09-24 15:58:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:48,917 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-24 15:58:48,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:58:48,917 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-24 15:58:48,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:58:48,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:48,921 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:48,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:58:48,922 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:48,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:48,922 INFO L82 PathProgramCache]: Analyzing trace with hash -511991682, now seen corresponding path program 1 times [2020-09-24 15:58:48,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:48,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546255868] [2020-09-24 15:58:48,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:48,995 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:48,995 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:48,996 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:48,996 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:48,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:48,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:48,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 15:58:48,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:48,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:48,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 15:58:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,038 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,039 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,039 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,039 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:49,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:49,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:49,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,095 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,095 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,096 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,096 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:49,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 15:58:49,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:49,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 15:58:49,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:49,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-09-24 15:58:49,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,183 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,184 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,184 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,184 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:49,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:49,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:49,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:49,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,203 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,204 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,204 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,204 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:49,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:49,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:49,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 15:58:49,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546255868] [2020-09-24 15:58:49,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:49,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:49,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503585655] [2020-09-24 15:58:49,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:49,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:49,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:49,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:49,217 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-09-24 15:58:49,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:49,260 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-09-24 15:58:49,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:58:49,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 15:58:49,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:49,262 INFO L225 Difference]: With dead ends: 69 [2020-09-24 15:58:49,263 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 15:58:49,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:58:49,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 15:58:49,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-09-24 15:58:49,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 15:58:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-24 15:58:49,273 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-24 15:58:49,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:49,273 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-24 15:58:49,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:49,274 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-24 15:58:49,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:58:49,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:49,276 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:49,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:58:49,276 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:49,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:49,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1477652418, now seen corresponding path program 1 times [2020-09-24 15:58:49,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:49,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993423811] [2020-09-24 15:58:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,310 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,310 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,310 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,311 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:49,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:58:49,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:49,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 15:58:49,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:49,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:49,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,347 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,348 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,348 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,348 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:49,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:49,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:49,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:49,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,384 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,384 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,385 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,385 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:49,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:58:49,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:49,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:49,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,414 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,414 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,415 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,415 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:49,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:49,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:49,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,429 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,429 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,429 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,429 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:49,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:49,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:49,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 15:58:49,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993423811] [2020-09-24 15:58:49,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:49,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:49,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536897341] [2020-09-24 15:58:49,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:49,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:49,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:49,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:49,451 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2020-09-24 15:58:49,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:49,487 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-09-24 15:58:49,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:58:49,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 15:58:49,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:49,492 INFO L225 Difference]: With dead ends: 54 [2020-09-24 15:58:49,492 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 15:58:49,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:58:49,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 15:58:49,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-24 15:58:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 15:58:49,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-24 15:58:49,505 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-24 15:58:49,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:49,505 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-24 15:58:49,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:49,505 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-24 15:58:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:58:49,510 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:49,510 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:49,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:58:49,513 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:49,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:49,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2109914946, now seen corresponding path program 1 times [2020-09-24 15:58:49,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:49,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850968620] [2020-09-24 15:58:49,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,595 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,596 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,596 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,596 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:49,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 15:58:49,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:49,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 15:58:49,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:49,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,659 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,660 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,660 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,660 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:49,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:49,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:49,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,699 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,699 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,700 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,700 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:49,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 15:58:49,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:49,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,788 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,788 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,789 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,789 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:49,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:58:49,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:49,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:49,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:49,856 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:49,856 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:49,857 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:49,858 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:49,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:49,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:49,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:49,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:49,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:49,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:49,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:49,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 15:58:49,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850968620] [2020-09-24 15:58:49,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:49,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 15:58:49,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564542402] [2020-09-24 15:58:49,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:58:49,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:49,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:58:49,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:58:49,898 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states. [2020-09-24 15:58:50,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:50,112 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2020-09-24 15:58:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 15:58:50,113 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-24 15:58:50,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:50,115 INFO L225 Difference]: With dead ends: 90 [2020-09-24 15:58:50,115 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 15:58:50,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-24 15:58:50,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 15:58:50,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-09-24 15:58:50,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 15:58:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-09-24 15:58:50,124 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 34 [2020-09-24 15:58:50,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:50,125 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-09-24 15:58:50,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:58:50,125 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-09-24 15:58:50,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 15:58:50,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:50,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:50,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:58:50,128 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:50,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:50,128 INFO L82 PathProgramCache]: Analyzing trace with hash 830258234, now seen corresponding path program 1 times [2020-09-24 15:58:50,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:50,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281901717] [2020-09-24 15:58:50,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,178 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,179 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,179 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,179 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 15:58:50,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 15:58:50,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 15:58:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 15:58:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:50,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,232 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,232 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,233 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,233 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:50,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:50,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:50,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:50,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:50,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,273 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,273 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,273 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,273 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 15:58:50,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 15:58:50,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 15:58:50,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:50,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,355 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,356 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,356 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,356 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:50,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:58:50,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:50,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,429 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,429 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,429 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,429 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:50,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:58:50,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:50,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:50,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,505 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,505 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,505 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,506 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:50,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:50,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:50,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 15:58:50,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281901717] [2020-09-24 15:58:50,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:50,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 15:58:50,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126139587] [2020-09-24 15:58:50,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:58:50,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:50,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:58:50,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:58:50,544 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 14 states. [2020-09-24 15:58:50,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:50,826 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2020-09-24 15:58:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 15:58:50,827 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-09-24 15:58:50,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:50,829 INFO L225 Difference]: With dead ends: 104 [2020-09-24 15:58:50,831 INFO L226 Difference]: Without dead ends: 75 [2020-09-24 15:58:50,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:58:50,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-24 15:58:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2020-09-24 15:58:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 15:58:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-09-24 15:58:50,847 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 43 [2020-09-24 15:58:50,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:50,847 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-09-24 15:58:50,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:58:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-09-24 15:58:50,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 15:58:50,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:50,852 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:50,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:58:50,853 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:50,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:50,853 INFO L82 PathProgramCache]: Analyzing trace with hash 444280, now seen corresponding path program 2 times [2020-09-24 15:58:50,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:50,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168065058] [2020-09-24 15:58:50,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,909 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,909 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,909 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,909 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 15:58:50,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 15:58:50,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 15:58:50,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 15:58:50,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,947 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,947 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,948 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,948 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:50,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:50,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:50,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:50,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:50,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:50,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:50,996 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:50,996 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:50,996 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:50,997 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:50,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:50,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:50,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 15:58:50,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 15:58:50,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 15:58:50,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,082 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,083 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,083 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,083 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 15:58:51,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 15:58:51,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:51,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 15:58:51,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,182 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,182 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,182 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,182 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:51,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:58:51,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:51,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,264 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,264 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,264 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,264 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:51,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 15:58:51,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:51,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,333 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,333 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,333 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,334 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:51,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:51,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,378 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 15:58:51,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168065058] [2020-09-24 15:58:51,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:51,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 15:58:51,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280030973] [2020-09-24 15:58:51,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:58:51,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:51,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:58:51,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:58:51,385 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 14 states. [2020-09-24 15:58:51,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:51,657 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2020-09-24 15:58:51,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 15:58:51,657 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-09-24 15:58:51,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:51,659 INFO L225 Difference]: With dead ends: 111 [2020-09-24 15:58:51,659 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 15:58:51,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:58:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 15:58:51,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 77. [2020-09-24 15:58:51,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-24 15:58:51,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-09-24 15:58:51,668 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 52 [2020-09-24 15:58:51,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:51,669 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-09-24 15:58:51,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:58:51,669 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-09-24 15:58:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 15:58:51,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:51,671 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:51,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:58:51,671 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:51,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:51,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1783783324, now seen corresponding path program 2 times [2020-09-24 15:58:51,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:51,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425423095] [2020-09-24 15:58:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,732 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,732 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,732 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,732 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 15:58:51,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 15:58:51,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:51,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 15:58:51,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 15:58:51,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,783 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,783 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,783 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,784 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:51,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:51,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:51,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,862 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,862 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,863 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,863 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-24 15:58:51,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 15:58:51,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 15:58:51,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 15:58:51,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:51,938 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:51,939 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:51,939 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:51,939 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:51,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:51,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:51,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 15:58:51,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 15:58:51,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 15:58:51,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 15:58:51,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,026 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,027 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,027 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,027 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 15:58:52,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 15:58:52,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 15:58:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 15:58:52,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,093 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,094 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,094 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,094 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:52,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 15:58:52,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:52,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,157 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,157 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,157 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,158 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:52,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:58:52,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:52,216 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:52,217 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:52,217 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:52,217 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:52,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:52,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:52,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:52,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:52,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 15:58:52,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [425423095] [2020-09-24 15:58:52,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:52,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 15:58:52,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503931958] [2020-09-24 15:58:52,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:58:52,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:52,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:58:52,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:58:52,264 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-09-24 15:58:52,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:52,536 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-09-24 15:58:52,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 15:58:52,536 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-09-24 15:58:52,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:52,537 INFO L225 Difference]: With dead ends: 93 [2020-09-24 15:58:52,537 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 15:58:52,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-09-24 15:58:52,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 15:58:52,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 15:58:52,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 15:58:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 15:58:52,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-09-24 15:58:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:52,542 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 15:58:52,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:58:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 15:58:52,542 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 15:58:52,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 15:58:52,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 15:58:52,589 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 15:58:52,590 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:58:52,590 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-09-24 15:58:52,590 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 15:58:52,590 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 15:58:52,590 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-09-24 15:58:52,590 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 15:58:52,590 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 15:58:52,591 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 15:58:52,591 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 15:58:52,591 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 15:58:52,591 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-09-24 15:58:52,591 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-09-24 15:58:52,591 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:58:52,591 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 15:58:52,591 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 15:58:52,592 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:58:52,593 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-09-24 15:58:52,594 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-09-24 15:58:52,594 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 15:58:52,594 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-09-24 15:58:52,594 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-09-24 15:58:52,595 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-09-24 15:58:52,595 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 15:58:52,595 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 15:58:52,595 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-09-24 15:58:52,595 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 15:58:52,595 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-09-24 15:58:52,596 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-09-24 15:58:52,596 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-09-24 15:58:52,596 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 15:58:52,596 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 15:58:52,596 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-09-24 15:58:52,596 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-24 15:58:52,598 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 15:58:52,598 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 15:58:52,599 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-24 15:58:52,599 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 15:58:52,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:58:52 BoogieIcfgContainer [2020-09-24 15:58:52,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:58:52,617 INFO L168 Benchmark]: Toolchain (without parser) took 5758.05 ms. Allocated memory was 138.9 MB in the beginning and 284.7 MB in the end (delta: 145.8 MB). Free memory was 102.3 MB in the beginning and 213.7 MB in the end (delta: -111.4 MB). Peak memory consumption was 34.3 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:52,619 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 15:58:52,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.95 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 92.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:52,621 INFO L168 Benchmark]: Boogie Preprocessor took 127.49 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 92.2 MB in the beginning and 179.5 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:52,622 INFO L168 Benchmark]: RCFGBuilder took 326.16 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 165.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:52,625 INFO L168 Benchmark]: TraceAbstraction took 4973.87 ms. Allocated memory was 200.8 MB in the beginning and 284.7 MB in the end (delta: 83.9 MB). Free memory was 165.3 MB in the beginning and 213.7 MB in the end (delta: -48.4 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:52,635 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 320.95 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 92.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.49 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 92.2 MB in the beginning and 179.5 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 326.16 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 165.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4973.87 ms. Allocated memory was 200.8 MB in the beginning and 284.7 MB in the end (delta: 83.9 MB). Free memory was 165.3 MB in the beginning and 213.7 MB in the end (delta: -48.4 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: 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, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 330 SDtfs, 55 SDslu, 2332 SDs, 0 SdLazy, 623 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 39 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 299 NumberOfCodeBlocks, 299 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 39015 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 63/95 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...