/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:08:45,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:08:45,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:08:45,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:08:45,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:08:45,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:08:45,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:08:45,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:08:45,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:08:45,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:08:45,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:08:45,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:08:45,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:08:45,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:08:45,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:08:45,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:08:45,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:08:45,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:08:45,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:08:45,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:08:45,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:08:45,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:08:45,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:08:45,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:08:45,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:08:45,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:08:45,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:08:45,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:08:45,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:08:45,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:08:45,257 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:08:45,258 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:08:45,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:08:45,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:08:45,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:08:45,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:08:45,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:08:45,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:08:45,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:08:45,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:08:45,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:08:45,267 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:08:45,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:08:45,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:08:45,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:08:45,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:08:45,321 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:08:45,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:08:45,321 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:08:45,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:08:45,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:08:45,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:08:45,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:08:45,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:08:45,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:08:45,324 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:08:45,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:08:45,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:08:45,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:08:45,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:08:45,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:08:45,325 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:08:45,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:08:45,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:45,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:08:45,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:08:45,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:08:45,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:08:45,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:08:45,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:08:45,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:08:45,328 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:08:45,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:08:45,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:08:45,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:08:45,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:08:45,812 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:08:45,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label17.c [2020-09-25 10:08:45,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f365449b/69ba44bb98804b1db55b2f53c6160ded/FLAG35843a4b0 [2020-09-25 10:08:46,512 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:08:46,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label17.c [2020-09-25 10:08:46,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f365449b/69ba44bb98804b1db55b2f53c6160ded/FLAG35843a4b0 [2020-09-25 10:08:46,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f365449b/69ba44bb98804b1db55b2f53c6160ded [2020-09-25 10:08:46,750 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:08:46,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:08:46,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:46,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:08:46,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:08:46,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:46" (1/1) ... [2020-09-25 10:08:46,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:46, skipping insertion in model container [2020-09-25 10:08:46,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:08:46" (1/1) ... [2020-09-25 10:08:46,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:08:46,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:08:47,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:47,330 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:08:47,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:08:47,598 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:08:47,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:47 WrapperNode [2020-09-25 10:08:47,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:08:47,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:08:47,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:08:47,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:08:47,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:47" (1/1) ... [2020-09-25 10:08:47,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:47" (1/1) ... [2020-09-25 10:08:47,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:47" (1/1) ... [2020-09-25 10:08:47,638 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:47" (1/1) ... [2020-09-25 10:08:47,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:47" (1/1) ... [2020-09-25 10:08:47,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:47" (1/1) ... [2020-09-25 10:08:47,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:47" (1/1) ... [2020-09-25 10:08:47,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:08:47,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:08:47,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:08:47,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:08:47,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:08:47,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:08:47,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:08:47,818 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:08:47,818 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:08:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:08:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:08:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:08:47,818 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:08:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:08:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:08:47,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:08:49,276 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:08:49,277 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:08:49,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:49 BoogieIcfgContainer [2020-09-25 10:08:49,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:08:49,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:08:49,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:08:49,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:08:49,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:08:46" (1/3) ... [2020-09-25 10:08:49,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:49, skipping insertion in model container [2020-09-25 10:08:49,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:08:47" (2/3) ... [2020-09-25 10:08:49,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e80f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:08:49, skipping insertion in model container [2020-09-25 10:08:49,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:08:49" (3/3) ... [2020-09-25 10:08:49,299 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label17.c [2020-09-25 10:08:49,312 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:08:49,323 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:08:49,347 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:08:49,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:08:49,381 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:08:49,381 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:08:49,381 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:08:49,381 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:08:49,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:08:49,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:08:49,382 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:08:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:08:49,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 10:08:49,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:49,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:49,441 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:49,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:49,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1479057050, now seen corresponding path program 1 times [2020-09-25 10:08:49,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:49,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652298201] [2020-09-25 10:08:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:50,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:50,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:50,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:52,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:53,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:53,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:53,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:54,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:54,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 10:08:54,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:08:54,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:08:54,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:54,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:54,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:08:54,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:08:54,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 10:08:54,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:08:54,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:08:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:55,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:08:55,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:08:55,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:08:55,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:08:55,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:08:55,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:08:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:08:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:08:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:08:55,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:08:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:08:55,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652298201] [2020-09-25 10:08:55,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:08:55,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:08:55,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336697020] [2020-09-25 10:08:55,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:08:55,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:08:55,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:08:55,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:08:55,180 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:08:57,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:08:57,492 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 10:08:57,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:08:57,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-09-25 10:08:57,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:08:57,518 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 10:08:57,519 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 10:08:57,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:08:57,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 10:08:57,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 10:08:57,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 10:08:57,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 10:08:57,643 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 145 [2020-09-25 10:08:57,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:08:57,644 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 10:08:57,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:08:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 10:08:57,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 10:08:57,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:08:57,661 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:08:57,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:08:57,662 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:08:57,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:08:57,663 INFO L82 PathProgramCache]: Analyzing trace with hash 507674625, now seen corresponding path program 1 times [2020-09-25 10:08:57,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:08:57,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1004012588] [2020-09-25 10:08:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:08:57,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:08:57,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:57,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:58,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:08:59,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:02,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:02,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 10:09:02,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:09:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:09:02,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:02,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:09:02,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:09:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 10:09:02,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:02,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:02,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:02,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:02,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:02,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:02,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 10:09:02,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:02,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:02,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:02,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:02,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:09:02,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:03,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:03,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:03,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:03,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:09:03,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:03,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:09:03,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:03,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:03,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:03,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:09:03,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:09:03,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1004012588] [2020-09-25 10:09:03,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:03,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:09:03,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156465255] [2020-09-25 10:09:03,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:09:03,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:03,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:09:03,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:09:03,113 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 7 states. [2020-09-25 10:09:05,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:05,704 INFO L93 Difference]: Finished difference Result 1998 states and 2423 transitions. [2020-09-25 10:09:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:09:05,705 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-09-25 10:09:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:05,719 INFO L225 Difference]: With dead ends: 1998 [2020-09-25 10:09:05,719 INFO L226 Difference]: Without dead ends: 1399 [2020-09-25 10:09:05,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:09:05,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2020-09-25 10:09:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1343. [2020-09-25 10:09:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1343 states. [2020-09-25 10:09:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1607 transitions. [2020-09-25 10:09:05,787 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1607 transitions. Word has length 162 [2020-09-25 10:09:05,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:05,788 INFO L479 AbstractCegarLoop]: Abstraction has 1343 states and 1607 transitions. [2020-09-25 10:09:05,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:09:05,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1607 transitions. [2020-09-25 10:09:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 10:09:05,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:05,819 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-09-25 10:09:05,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:09:05,819 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:05,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1254372243, now seen corresponding path program 1 times [2020-09-25 10:09:05,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:05,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594594061] [2020-09-25 10:09:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:05,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:05,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:06,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:06,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:07,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:10,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:10,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:10,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 10:09:10,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:09:10,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 10:09:10,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:10,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:10,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:09:10,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:09:10,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:09:10,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:11,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:11,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:11,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:11,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:11,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 10:09:11,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:11,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:11,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:09:11,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:11,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:11,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:11,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:09:11,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:11,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 10:09:11,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:11,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:09:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:11,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:09:11,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:11,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:09:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:11,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:11,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:09:11,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:11,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 10:09:11,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:11,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:11,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:11,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:09:11,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:09:11,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 10:09:11,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594594061] [2020-09-25 10:09:11,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:11,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:09:11,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238331195] [2020-09-25 10:09:11,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:09:11,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:11,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:09:11,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:09:11,524 INFO L87 Difference]: Start difference. First operand 1343 states and 1607 transitions. Second operand 12 states. [2020-09-25 10:09:12,359 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-09-25 10:09:14,254 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-25 10:09:16,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:16,671 INFO L93 Difference]: Finished difference Result 5391 states and 7102 transitions. [2020-09-25 10:09:16,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 10:09:16,674 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 180 [2020-09-25 10:09:16,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:16,701 INFO L225 Difference]: With dead ends: 5391 [2020-09-25 10:09:16,702 INFO L226 Difference]: Without dead ends: 3806 [2020-09-25 10:09:16,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:09:16,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3806 states. [2020-09-25 10:09:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3806 to 3168. [2020-09-25 10:09:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3168 states. [2020-09-25 10:09:16,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 3848 transitions. [2020-09-25 10:09:16,863 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 3848 transitions. Word has length 180 [2020-09-25 10:09:16,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:16,863 INFO L479 AbstractCegarLoop]: Abstraction has 3168 states and 3848 transitions. [2020-09-25 10:09:16,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:09:16,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 3848 transitions. [2020-09-25 10:09:16,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-25 10:09:16,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:16,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:16,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:09:16,878 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:16,879 INFO L82 PathProgramCache]: Analyzing trace with hash 109070566, now seen corresponding path program 1 times [2020-09-25 10:09:16,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:16,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688516342] [2020-09-25 10:09:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:16,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:16,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:17,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:18,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:21,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:21,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:21,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 10:09:21,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:09:21,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-09-25 10:09:21,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:21,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:09:21,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 10:09:21,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:22,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:22,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:22,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:22,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:22,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 10:09:22,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:22,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:22,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:09:22,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:22,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:22,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:22,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:09:22,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:09:22,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:22,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:22,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:22,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:22,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:09:22,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:22,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:09:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:22,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:22,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:09:22,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:22,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 10:09:22,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:22,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:22,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:22,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:09:22,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 10:09:22,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688516342] [2020-09-25 10:09:22,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:22,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:09:22,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414728937] [2020-09-25 10:09:22,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:09:22,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:22,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:09:22,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:09:22,748 INFO L87 Difference]: Start difference. First operand 3168 states and 3848 transitions. Second operand 11 states. [2020-09-25 10:09:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:26,496 INFO L93 Difference]: Finished difference Result 7477 states and 9447 transitions. [2020-09-25 10:09:26,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:09:26,496 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 196 [2020-09-25 10:09:26,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:26,515 INFO L225 Difference]: With dead ends: 7477 [2020-09-25 10:09:26,516 INFO L226 Difference]: Without dead ends: 3107 [2020-09-25 10:09:26,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:09:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2020-09-25 10:09:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 2947. [2020-09-25 10:09:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2947 states. [2020-09-25 10:09:26,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2947 states to 2947 states and 3477 transitions. [2020-09-25 10:09:26,631 INFO L78 Accepts]: Start accepts. Automaton has 2947 states and 3477 transitions. Word has length 196 [2020-09-25 10:09:26,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:26,631 INFO L479 AbstractCegarLoop]: Abstraction has 2947 states and 3477 transitions. [2020-09-25 10:09:26,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:09:26,631 INFO L276 IsEmpty]: Start isEmpty. Operand 2947 states and 3477 transitions. [2020-09-25 10:09:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 10:09:26,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:26,643 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:26,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:09:26,644 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:26,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:26,644 INFO L82 PathProgramCache]: Analyzing trace with hash 829002888, now seen corresponding path program 1 times [2020-09-25 10:09:26,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:26,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850572169] [2020-09-25 10:09:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:26,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:26,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:26,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:27,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:27,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:28,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:31,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:31,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-09-25 10:09:31,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:09:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 10:09:31,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:31,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:09:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:09:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-25 10:09:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:31,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:09:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:31,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:31,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:31,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:09:31,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:31,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:09:31,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:31,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:09:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:31,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:09:31,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:09:31,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:09:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:31,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:31,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:09:31,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:09:31,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:09:31,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:31,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:31,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:09:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 10:09:31,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:31,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:09:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:31,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:32,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:32,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:09:32,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:09:32,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:09:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-09-25 10:09:32,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:09:32,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:09:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:09:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:09:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 10:09:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:09:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 10:09:32,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850572169] [2020-09-25 10:09:32,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:09:32,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:09:32,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711880456] [2020-09-25 10:09:32,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:09:32,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:09:32,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:09:32,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:09:32,439 INFO L87 Difference]: Start difference. First operand 2947 states and 3477 transitions. Second operand 10 states. [2020-09-25 10:09:35,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:09:35,308 INFO L93 Difference]: Finished difference Result 4949 states and 5831 transitions. [2020-09-25 10:09:35,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:09:35,310 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 246 [2020-09-25 10:09:35,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:09:35,319 INFO L225 Difference]: With dead ends: 4949 [2020-09-25 10:09:35,319 INFO L226 Difference]: Without dead ends: 1762 [2020-09-25 10:09:35,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:09:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2020-09-25 10:09:35,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1450. [2020-09-25 10:09:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2020-09-25 10:09:35,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1592 transitions. [2020-09-25 10:09:35,363 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1592 transitions. Word has length 246 [2020-09-25 10:09:35,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:09:35,363 INFO L479 AbstractCegarLoop]: Abstraction has 1450 states and 1592 transitions. [2020-09-25 10:09:35,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:09:35,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1592 transitions. [2020-09-25 10:09:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-09-25 10:09:35,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:09:35,370 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:09:35,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:09:35,370 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:09:35,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:09:35,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1358074601, now seen corresponding path program 1 times [2020-09-25 10:09:35,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:09:35,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336284473] [2020-09-25 10:09:35,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:09:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:09:35,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:09:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking...