/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_b2_o3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:58:37,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:58:37,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:58:37,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:58:37,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:58:37,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:58:37,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:58:37,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:58:37,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:58:37,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:58:37,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:58:37,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:58:37,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:58:37,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:58:37,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:58:37,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:58:37,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:58:37,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:58:37,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:58:37,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:58:37,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:58:37,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:58:37,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:58:37,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:58:37,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:58:37,212 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:58:37,212 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:58:37,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:58:37,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:58:37,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:58:37,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:58:37,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:58:37,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:58:37,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:58:37,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:58:37,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:58:37,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:58:37,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:58:37,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:58:37,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:58:37,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:58:37,223 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 15:58:37,261 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:58:37,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:58:37,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:58:37,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:58:37,264 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:58:37,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:58:37,265 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:58:37,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:58:37,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:58:37,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:58:37,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:58:37,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:58:37,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:58:37,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:58:37,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:58:37,268 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:58:37,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:58:37,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:58:37,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:58:37,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:58:37,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:58:37,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:58:37,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:58:37,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:58:37,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:58:37,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:58:37,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:58:37,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:58:37,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:58:37,272 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 15:58:37,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:58:37,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:58:37,806 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:58:37,809 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:58:37,809 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:58:37,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-09-24 15:58:37,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59cc54ac2/963ddf3d5bf94b42812d83349e7bdea1/FLAGc0385dcf0 [2020-09-24 15:58:38,473 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:58:38,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_b2_o3.c [2020-09-24 15:58:38,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59cc54ac2/963ddf3d5bf94b42812d83349e7bdea1/FLAGc0385dcf0 [2020-09-24 15:58:38,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/59cc54ac2/963ddf3d5bf94b42812d83349e7bdea1 [2020-09-24 15:58:38,830 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:58:38,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:58:38,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:38,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:58:38,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:58:38,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:38" (1/1) ... [2020-09-24 15:58:38,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c096cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:38, skipping insertion in model container [2020-09-24 15:58:38,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:58:38" (1/1) ... [2020-09-24 15:58:38,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:58:38,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:58:39,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:39,108 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:58:39,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:58:39,145 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:58:39,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:39 WrapperNode [2020-09-24 15:58:39,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:58:39,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:58:39,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:58:39,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:58:39,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:39" (1/1) ... [2020-09-24 15:58:39,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:39" (1/1) ... [2020-09-24 15:58:39,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:39" (1/1) ... [2020-09-24 15:58:39,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:39" (1/1) ... [2020-09-24 15:58:39,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:39" (1/1) ... [2020-09-24 15:58:39,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:39" (1/1) ... [2020-09-24 15:58:39,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:39" (1/1) ... [2020-09-24 15:58:39,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:58:39,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:58:39,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:58:39,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:58:39,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:39" (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 15:58:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:58:39,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:58:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 15:58:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-09-24 15:58:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:58:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 15:58:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:58:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 15:58:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-09-24 15:58:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:58:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:58:39,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:58:39,603 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:58:39,604 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:58:39,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:39 BoogieIcfgContainer [2020-09-24 15:58:39,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:58:39,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:58:39,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:58:39,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:58:39,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:58:38" (1/3) ... [2020-09-24 15:58:39,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59386f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:39, skipping insertion in model container [2020-09-24 15:58:39,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:58:39" (2/3) ... [2020-09-24 15:58:39,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59386f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:58:39, skipping insertion in model container [2020-09-24 15:58:39,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:58:39" (3/3) ... [2020-09-24 15:58:39,622 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_b2_o3.c [2020-09-24 15:58:39,638 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:58:39,650 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:58:39,677 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:58:39,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:58:39,714 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:58:39,714 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:58:39,714 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:58:39,715 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:58:39,715 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:58:39,715 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:58:39,715 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:58:39,741 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-09-24 15:58:39,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 15:58:39,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:39,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:58:39,760 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:39,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:39,768 INFO L82 PathProgramCache]: Analyzing trace with hash 875745540, now seen corresponding path program 1 times [2020-09-24 15:58:39,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:39,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35853106] [2020-09-24 15:58:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:39,943 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:39,944 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:39,944 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:39,944 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:39,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 15:58:39,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:39,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 15:58:39,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 15:58:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:39,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:40,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:40,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,029 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,030 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,030 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,030 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:40,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:40,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:40,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:40,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:40,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:40,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,050 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,050 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,051 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,051 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:40,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:58:40,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:40,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:40,075 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 15:58:40,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35853106] [2020-09-24 15:58:40,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:40,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:40,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461743854] [2020-09-24 15:58:40,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:40,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:40,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:40,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:40,111 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2020-09-24 15:58:40,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:40,211 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-09-24 15:58:40,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:58:40,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 15:58:40,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:40,227 INFO L225 Difference]: With dead ends: 51 [2020-09-24 15:58:40,227 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 15:58:40,232 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 15:58:40,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 15:58:40,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-24 15:58:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 15:58:40,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-09-24 15:58:40,298 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 16 [2020-09-24 15:58:40,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:40,299 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-09-24 15:58:40,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-09-24 15:58:40,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-24 15:58:40,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:40,302 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 15:58:40,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:58:40,303 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:40,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:40,303 INFO L82 PathProgramCache]: Analyzing trace with hash 71846672, now seen corresponding path program 1 times [2020-09-24 15:58:40,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:40,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337119762] [2020-09-24 15:58:40,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:40,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,391 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,391 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,392 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 15:58:40,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 15:58:40,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:58:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 15:58:40,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 15:58:40,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:40,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,554 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,554 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,555 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,555 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:40,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:40,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:40,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:40,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:40,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,631 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,632 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,632 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,632 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:40,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 15:58:40,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:40,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:40,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:40,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,709 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,710 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,710 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,710 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:40,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 15:58:40,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:40,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:40,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:40,737 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 15:58:40,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337119762] [2020-09-24 15:58:40,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:40,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 15:58:40,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23275153] [2020-09-24 15:58:40,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 15:58:40,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:40,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 15:58:40,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 15:58:40,742 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 8 states. [2020-09-24 15:58:40,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:40,873 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2020-09-24 15:58:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:58:40,874 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-24 15:58:40,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:40,876 INFO L225 Difference]: With dead ends: 66 [2020-09-24 15:58:40,876 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 15:58:40,878 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 15:58:40,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 15:58:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 15:58:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 15:58:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-09-24 15:58:40,887 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 25 [2020-09-24 15:58:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:40,887 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-09-24 15:58:40,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 15:58:40,888 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-09-24 15:58:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:58:40,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:40,890 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 15:58:40,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:58:40,890 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:40,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:40,891 INFO L82 PathProgramCache]: Analyzing trace with hash -511991682, now seen corresponding path program 1 times [2020-09-24 15:58:40,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:40,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440275360] [2020-09-24 15:58:40,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,920 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,921 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,921 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,921 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:40,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:58:40,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-24 15:58:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:40,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,947 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,948 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,948 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,948 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:40,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:40,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:40,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:40,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:40,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-24 15:58:40,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:40,985 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:40,986 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:40,986 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:40,986 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:40,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:40,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:40,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 15:58:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:40,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:41,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,054 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,054 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,055 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,055 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:41,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:41,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:41,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:41,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,074 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,075 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,075 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,075 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:41,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:41,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:41,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,084 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 15:58:41,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440275360] [2020-09-24 15:58:41,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:41,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:41,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111409525] [2020-09-24 15:58:41,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:41,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:41,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:41,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:41,087 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 5 states. [2020-09-24 15:58:41,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:41,128 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-09-24 15:58:41,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:58:41,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 15:58:41,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:41,130 INFO L225 Difference]: With dead ends: 69 [2020-09-24 15:58:41,130 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 15:58:41,131 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 15:58:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 15:58:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-09-24 15:58:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 15:58:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-24 15:58:41,141 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-24 15:58:41,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:41,142 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-24 15:58:41,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:41,142 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-24 15:58:41,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:58:41,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:41,144 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 15:58:41,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:58:41,144 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:41,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:41,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1477652418, now seen corresponding path program 1 times [2020-09-24 15:58:41,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:41,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [930484394] [2020-09-24 15:58:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,168 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,169 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,169 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,169 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:41,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:41,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 15:58:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 15:58:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,201 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,202 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,202 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,202 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:41,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:58:41,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:41,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,245 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,245 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,246 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,246 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:41,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 15:58:41,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:41,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,278 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,279 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,279 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,280 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:41,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:41,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:41,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:41,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,297 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,297 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,298 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,298 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:41,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:41,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:41,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:58:41,313 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 15:58:41,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [930484394] [2020-09-24 15:58:41,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:58:41,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 15:58:41,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352474840] [2020-09-24 15:58:41,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 15:58:41,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:41,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 15:58:41,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:58:41,320 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 5 states. [2020-09-24 15:58:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:41,355 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-09-24 15:58:41,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 15:58:41,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 15:58:41,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:41,358 INFO L225 Difference]: With dead ends: 54 [2020-09-24 15:58:41,358 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 15:58:41,361 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 15:58:41,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 15:58:41,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-24 15:58:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 15:58:41,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-09-24 15:58:41,374 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-09-24 15:58:41,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:41,375 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-09-24 15:58:41,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 15:58:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-09-24 15:58:41,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:58:41,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:41,380 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 15:58:41,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:58:41,380 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:41,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:41,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2109914946, now seen corresponding path program 1 times [2020-09-24 15:58:41,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:41,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419481296] [2020-09-24 15:58:41,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,463 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,463 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,463 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,464 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:58:41,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 15:58:41,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 15:58:41,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:41,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,533 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,533 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,534 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,534 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:41,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:41,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:41,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,582 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,583 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,583 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,583 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:41,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 15:58:41,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:41,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:41,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,674 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,674 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,675 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,675 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:41,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:58:41,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:41,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:41,746 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:41,747 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:41,747 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:41,748 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:41,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:41,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:41,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:58:41,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:41,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:41,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:41,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:41,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:41,787 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 15:58:41,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419481296] [2020-09-24 15:58:41,788 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:41,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 15:58:41,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774638216] [2020-09-24 15:58:41,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:58:41,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:41,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:58:41,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:58:41,791 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 11 states. [2020-09-24 15:58:42,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:42,019 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2020-09-24 15:58:42,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 15:58:42,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-24 15:58:42,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:42,021 INFO L225 Difference]: With dead ends: 92 [2020-09-24 15:58:42,021 INFO L226 Difference]: Without dead ends: 63 [2020-09-24 15:58:42,026 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 15:58:42,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-24 15:58:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2020-09-24 15:58:42,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 15:58:42,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-09-24 15:58:42,041 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 34 [2020-09-24 15:58:42,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:42,043 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-09-24 15:58:42,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:58:42,044 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-09-24 15:58:42,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 15:58:42,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:42,048 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 15:58:42,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:58:42,049 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:42,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:42,049 INFO L82 PathProgramCache]: Analyzing trace with hash 830258234, now seen corresponding path program 1 times [2020-09-24 15:58:42,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:42,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084222242] [2020-09-24 15:58:42,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,091 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,092 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,092 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,093 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 15:58:42,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 15:58:42,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:42,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 15:58:42,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:42,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,126 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,126 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,126 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,126 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:42,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:42,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:42,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:42,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:42,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,176 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,176 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,176 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,177 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 15:58:42,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 15:58:42,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 15:58:42,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:42,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:42,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,261 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,261 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,262 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,262 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:42,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:58:42,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:42,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:42,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:42,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,324 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,325 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,325 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,325 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:42,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 15:58:42,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:42,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:42,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:42,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,390 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,390 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,390 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,391 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:42,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:42,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:42,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:42,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 15:58:42,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084222242] [2020-09-24 15:58:42,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:42,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 15:58:42,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363320562] [2020-09-24 15:58:42,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:58:42,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:42,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:58:42,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:58:42,426 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 11 states. [2020-09-24 15:58:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:42,602 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2020-09-24 15:58:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 15:58:42,603 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-09-24 15:58:42,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:42,605 INFO L225 Difference]: With dead ends: 99 [2020-09-24 15:58:42,605 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 15:58:42,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 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 15:58:42,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 15:58:42,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 65. [2020-09-24 15:58:42,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 15:58:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-09-24 15:58:42,614 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 43 [2020-09-24 15:58:42,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:42,615 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-09-24 15:58:42,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:58:42,615 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-09-24 15:58:42,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 15:58:42,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:58:42,617 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 15:58:42,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 15:58:42,617 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:58:42,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:58:42,618 INFO L82 PathProgramCache]: Analyzing trace with hash 444280, now seen corresponding path program 2 times [2020-09-24 15:58:42,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:58:42,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733183439] [2020-09-24 15:58:42,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:58:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,648 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,648 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,649 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,649 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 15:58:42,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 15:58:42,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 15:58:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:42,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:42,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:58:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,672 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,672 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,673 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,673 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 15:58:42,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:58:42,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:58:42,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:42,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:58:42,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:42,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 15:58:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,710 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,710 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,710 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,710 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 15:58:42,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 15:58:42,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:42,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 15:58:42,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:42,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,768 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,768 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,769 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,769 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 15:58:42,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 15:58:42,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 15:58:42,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 15:58:42,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 15:58:42,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:42,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,832 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,832 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,832 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,833 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 15:58:42,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:58:42,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 15:58:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 15:58:42,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:42,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,899 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,900 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,900 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,900 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 15:58:42,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 15:58:42,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 15:58:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:42,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 15:58:42,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:42,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 15:58:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:58:42,979 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:58:42,979 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:58:42,979 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:58:42,980 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:58:42,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:58:42,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:58:42,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:58:42,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:58:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 15:58:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:58:42,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 15:58:42,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:58:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 15:58:43,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733183439] [2020-09-24 15:58:43,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:58:43,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 15:58:43,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278148961] [2020-09-24 15:58:43,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 15:58:43,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:58:43,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 15:58:43,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:58:43,014 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 11 states. [2020-09-24 15:58:43,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:58:43,203 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2020-09-24 15:58:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 15:58:43,203 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-24 15:58:43,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:58:43,204 INFO L225 Difference]: With dead ends: 81 [2020-09-24 15:58:43,204 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 15:58:43,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 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 15:58:43,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 15:58:43,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 15:58:43,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 15:58:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 15:58:43,206 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2020-09-24 15:58:43,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:58:43,207 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 15:58:43,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 15:58:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 15:58:43,207 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 15:58:43,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 15:58:43,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 15:58:43,241 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 15:58:43,241 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:58:43,242 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 14 19) no Hoare annotation was computed. [2020-09-24 15:58:43,242 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 15:58:43,242 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 15:58:43,242 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-09-24 15:58:43,242 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 15:58:43,242 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 15:58:43,242 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 15:58:43,243 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 15:58:43,243 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 15:58:43,243 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 14 19) no Hoare annotation was computed. [2020-09-24 15:58:43,243 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 14 19) the Hoare annotation is: true [2020-09-24 15:58:43,243 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:58:43,243 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 15:58:43,243 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 15:58:43,244 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:58:43,244 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-09-24 15:58:43,244 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 21 27) the Hoare annotation is: true [2020-09-24 15:58:43,244 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 15:58:43,244 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 21 27) no Hoare annotation was computed. [2020-09-24 15:58:43,244 INFO L268 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-09-24 15:58:43,245 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-09-24 15:58:43,245 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 15:58:43,245 INFO L268 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-09-24 15:58:43,245 INFO L268 CegarLoopResult]: For program point L24-2(lines 21 27) no Hoare annotation was computed. [2020-09-24 15:58:43,245 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 15:58:43,245 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 12) no Hoare annotation was computed. [2020-09-24 15:58:43,245 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 12) no Hoare annotation was computed. [2020-09-24 15:58:43,246 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 12) the Hoare annotation is: true [2020-09-24 15:58:43,246 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 15:58:43,246 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 15:58:43,246 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-09-24 15:58:43,246 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-24 15:58:43,246 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-24 15:58:43,246 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 15:58:43,247 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-24 15:58:43,247 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 15:58:43,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:58:43 BoogieIcfgContainer [2020-09-24 15:58:43,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:58:43,264 INFO L168 Benchmark]: Toolchain (without parser) took 4431.49 ms. Allocated memory was 148.4 MB in the beginning and 244.8 MB in the end (delta: 96.5 MB). Free memory was 105.0 MB in the beginning and 195.8 MB in the end (delta: -90.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:43,265 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:58:43,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.06 ms. Allocated memory is still 148.4 MB. Free memory was 104.4 MB in the beginning and 94.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:43,269 INFO L168 Benchmark]: Boogie Preprocessor took 123.31 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 94.8 MB in the beginning and 182.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:43,270 INFO L168 Benchmark]: RCFGBuilder took 341.05 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 168.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:43,272 INFO L168 Benchmark]: TraceAbstraction took 3647.15 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 168.4 MB in the beginning and 195.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-09-24 15:58:43,279 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 308.06 ms. Allocated memory is still 148.4 MB. Free memory was 104.4 MB in the beginning and 94.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.31 ms. Allocated memory was 148.4 MB in the beginning and 203.4 MB in the end (delta: 55.1 MB). Free memory was 94.8 MB in the beginning and 182.6 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 341.05 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 168.4 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3647.15 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 168.4 MB in the beginning and 195.8 MB in the end (delta: -27.3 MB). Peak memory consumption was 14.1 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: 3.4s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 277 SDtfs, 39 SDslu, 1533 SDs, 0 SdLazy, 335 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=6, 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, 7 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 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, 1.9s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 24303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 39/51 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...