/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 06:44:33,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:44:33,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:44:33,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:44:33,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:44:33,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:44:33,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:44:33,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:44:33,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:44:33,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:44:33,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:44:33,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:44:33,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:44:33,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:44:33,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:44:33,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:44:33,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:44:33,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:44:33,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:44:33,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:44:33,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:44:33,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:44:33,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:44:33,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:44:33,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:44:33,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:44:33,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:44:33,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:44:33,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:44:33,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:44:33,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:44:33,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:44:33,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:44:33,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:44:33,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:44:33,194 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:44:33,195 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:44:33,195 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:44:33,195 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:44:33,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:44:33,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:44:33,199 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 06:44:33,242 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:44:33,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:44:33,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:44:33,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:44:33,245 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:44:33,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:44:33,246 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:44:33,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:44:33,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:44:33,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:44:33,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:44:33,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:44:33,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:44:33,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:44:33,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:44:33,249 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:44:33,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:44:33,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:44:33,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:44:33,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:44:33,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:44:33,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:44:33,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:44:33,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:44:33,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:44:33,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:44:33,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:44:33,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:44:33,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:44:33,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:44:33,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:44:33,685 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:44:33,690 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:44:33,691 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:44:33,692 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:44:33,693 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label17.c [2020-09-25 06:44:33,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99fdb937b/5a3aff86db21482085eb91002e2dace6/FLAGa5e29ac9e [2020-09-25 06:44:34,368 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:44:34,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label17.c [2020-09-25 06:44:34,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99fdb937b/5a3aff86db21482085eb91002e2dace6/FLAGa5e29ac9e [2020-09-25 06:44:34,602 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99fdb937b/5a3aff86db21482085eb91002e2dace6 [2020-09-25 06:44:34,614 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:44:34,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:44:34,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:34,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:44:34,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:44:34,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:34" (1/1) ... [2020-09-25 06:44:34,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:34, skipping insertion in model container [2020-09-25 06:44:34,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:34" (1/1) ... [2020-09-25 06:44:34,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:44:34,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:44:35,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:35,196 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:44:35,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:35,505 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:44:35,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:35 WrapperNode [2020-09-25 06:44:35,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:35,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:44:35,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:44:35,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:44:35,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:35" (1/1) ... [2020-09-25 06:44:35,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:35" (1/1) ... [2020-09-25 06:44:35,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:35" (1/1) ... [2020-09-25 06:44:35,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:35" (1/1) ... [2020-09-25 06:44:35,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:35" (1/1) ... [2020-09-25 06:44:35,612 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:35" (1/1) ... [2020-09-25 06:44:35,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:35" (1/1) ... [2020-09-25 06:44:35,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:44:35,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:44:35,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:44:35,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:44:35,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:35" (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 06:44:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:44:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:44:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:44:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:44:35,712 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:44:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:44:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:44:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:44:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:44:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:44:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:44:37,061 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:44:37,061 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:44:37,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:37 BoogieIcfgContainer [2020-09-25 06:44:37,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:44:37,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:44:37,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:44:37,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:44:37,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:44:34" (1/3) ... [2020-09-25 06:44:37,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:37, skipping insertion in model container [2020-09-25 06:44:37,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:35" (2/3) ... [2020-09-25 06:44:37,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@786d3a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:37, skipping insertion in model container [2020-09-25 06:44:37,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:37" (3/3) ... [2020-09-25 06:44:37,081 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label17.c [2020-09-25 06:44:37,092 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:44:37,104 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:44:37,127 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:44:37,162 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:44:37,162 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:44:37,163 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:44:37,163 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:44:37,163 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:44:37,163 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:44:37,163 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:44:37,164 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:44:37,195 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:44:37,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 06:44:37,219 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:37,220 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 06:44:37,221 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:37,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:37,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1479057050, now seen corresponding path program 1 times [2020-09-25 06:44:37,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:37,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106040551] [2020-09-25 06:44:37,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:37,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:37,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:37,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:38,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:38,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:40,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:40,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:41,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:41,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:41,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:42,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:42,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 06:44:42,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 06:44:42,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 06:44:42,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:42,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:42,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:44:42,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:44:42,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 06:44:42,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:44:42,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:42,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:42,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:42,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:42,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:42,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 06:44:42,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:42,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:44:42,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:42,887 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 06:44:42,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106040551] [2020-09-25 06:44:42,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:44:42,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:44:42,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534589782] [2020-09-25 06:44:42,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:44:42,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:42,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:44:42,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:44:42,921 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:44:45,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:45,289 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 06:44:45,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:44:45,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-09-25 06:44:45,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:45,317 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 06:44:45,318 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 06:44:45,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 06:44:45,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 06:44:45,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 06:44:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 06:44:45,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 06:44:45,453 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 145 [2020-09-25 06:44:45,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:45,456 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 06:44:45,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:44:45,456 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 06:44:45,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 06:44:45,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:45,476 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2020-09-25 06:44:45,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:44:45,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:45,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:45,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1676334790, now seen corresponding path program 1 times [2020-09-25 06:44:45,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:45,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29806732] [2020-09-25 06:44:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:45,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:45,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:46,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:47,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:47,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:48,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:48,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:49,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:50,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:50,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:50,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 06:44:50,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 06:44:50,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:44:50,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:50,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:50,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:50,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:44:50,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 06:44:50,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:50,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:50,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:50,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:50,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:50,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:50,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:44:50,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:50,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:50,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:50,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:50,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:50,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:50,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:50,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:44:50,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:50,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:44:50,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:50,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:50,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:44:50,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:50,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:50,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29806732] [2020-09-25 06:44:50,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:50,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:50,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241704766] [2020-09-25 06:44:50,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:50,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:50,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:50,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:50,763 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 06:44:52,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:52,285 INFO L93 Difference]: Finished difference Result 1623 states and 2079 transitions. [2020-09-25 06:44:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:52,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-25 06:44:52,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:52,295 INFO L225 Difference]: With dead ends: 1623 [2020-09-25 06:44:52,295 INFO L226 Difference]: Without dead ends: 980 [2020-09-25 06:44:52,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:52,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-25 06:44:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 816. [2020-09-25 06:44:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-09-25 06:44:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1043 transitions. [2020-09-25 06:44:52,341 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1043 transitions. Word has length 163 [2020-09-25 06:44:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:52,342 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 1043 transitions. [2020-09-25 06:44:52,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1043 transitions. [2020-09-25 06:44:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 06:44:52,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:52,348 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:44:52,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:44:52,349 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:52,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:52,349 INFO L82 PathProgramCache]: Analyzing trace with hash -48105695, now seen corresponding path program 1 times [2020-09-25 06:44:52,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:52,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28793501] [2020-09-25 06:44:52,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:52,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:52,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:52,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:54,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:55,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:57,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:57,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 06:44:57,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:44:57,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 06:44:57,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:57,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:44:57,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 06:44:57,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 06:44:57,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:57,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:44:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:57,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:57,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:57,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:44:57,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:57,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:44:57,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:57,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:44:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:44:57,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:57,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:44:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:57,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:57,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:44:57,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 06:44:57,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:44:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:44:57,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:44:57,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:44:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:44:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:44:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 06:44:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:44:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:44:57,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28793501] [2020-09-25 06:44:57,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:44:57,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:44:57,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341298024] [2020-09-25 06:44:57,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:44:57,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:44:57,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:44:57,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:44:57,653 INFO L87 Difference]: Start difference. First operand 816 states and 1043 transitions. Second operand 5 states. [2020-09-25 06:44:59,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:44:59,611 INFO L93 Difference]: Finished difference Result 2075 states and 2796 transitions. [2020-09-25 06:44:59,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:44:59,612 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-25 06:44:59,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:44:59,621 INFO L225 Difference]: With dead ends: 2075 [2020-09-25 06:44:59,621 INFO L226 Difference]: Without dead ends: 1281 [2020-09-25 06:44:59,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:44:59,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2020-09-25 06:44:59,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1269. [2020-09-25 06:44:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-09-25 06:44:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1663 transitions. [2020-09-25 06:44:59,691 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1663 transitions. Word has length 171 [2020-09-25 06:44:59,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:44:59,701 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1663 transitions. [2020-09-25 06:44:59,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:44:59,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1663 transitions. [2020-09-25 06:44:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 06:44:59,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:59,710 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 06:44:59,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:44:59,711 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:59,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:59,711 INFO L82 PathProgramCache]: Analyzing trace with hash 587130536, now seen corresponding path program 1 times [2020-09-25 06:44:59,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:59,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699368509] [2020-09-25 06:44:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:44:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:44:59,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:00,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:00,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:04,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:04,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 06:45:04,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:45:04,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 06:45:04,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:04,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:04,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 06:45:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 06:45:04,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:04,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:04,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:04,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:04,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:04,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:04,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:45:04,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:04,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:04,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:04,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:04,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:04,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:04,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:04,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:04,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 06:45:04,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:04,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 06:45:04,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:04,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:04,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 06:45:04,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:04,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 06:45:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:04,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:05,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:05,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:45:05,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 06:45:05,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:05,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:45:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:45:05,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699368509] [2020-09-25 06:45:05,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:05,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:45:05,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385306196] [2020-09-25 06:45:05,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:45:05,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:05,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:45:05,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:05,175 INFO L87 Difference]: Start difference. First operand 1269 states and 1663 transitions. Second operand 7 states. [2020-09-25 06:45:08,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:08,099 INFO L93 Difference]: Finished difference Result 3782 states and 5386 transitions. [2020-09-25 06:45:08,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:45:08,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2020-09-25 06:45:08,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:08,126 INFO L225 Difference]: With dead ends: 3782 [2020-09-25 06:45:08,126 INFO L226 Difference]: Without dead ends: 2535 [2020-09-25 06:45:08,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:45:08,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2535 states. [2020-09-25 06:45:08,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2535 to 2370. [2020-09-25 06:45:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2370 states. [2020-09-25 06:45:08,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2370 states to 2370 states and 3062 transitions. [2020-09-25 06:45:08,251 INFO L78 Accepts]: Start accepts. Automaton has 2370 states and 3062 transitions. Word has length 220 [2020-09-25 06:45:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:08,252 INFO L479 AbstractCegarLoop]: Abstraction has 2370 states and 3062 transitions. [2020-09-25 06:45:08,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:45:08,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2370 states and 3062 transitions. [2020-09-25 06:45:08,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-25 06:45:08,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:08,266 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:08,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:45:08,266 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:08,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:08,267 INFO L82 PathProgramCache]: Analyzing trace with hash 329651812, now seen corresponding path program 1 times [2020-09-25 06:45:08,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:08,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060951529] [2020-09-25 06:45:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:08,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:08,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:13,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:13,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-09-25 06:45:13,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:45:13,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 06:45:13,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:13,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 06:45:13,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 06:45:13,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:13,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:13,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:13,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:13,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:13,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:13,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:13,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:13,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:13,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:13,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:13,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:13,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:13,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:13,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:13,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:13,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:45:13,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 06:45:13,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:13,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:13,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 06:45:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:13,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:45:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:13,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:13,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:13,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:45:13,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:13,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 06:45:13,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:13,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:13,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 06:45:13,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:13,728 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:45:13,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060951529] [2020-09-25 06:45:13,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:13,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:45:13,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946169034] [2020-09-25 06:45:13,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:45:13,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:13,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:45:13,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:45:13,731 INFO L87 Difference]: Start difference. First operand 2370 states and 3062 transitions. Second operand 8 states. [2020-09-25 06:45:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:16,898 INFO L93 Difference]: Finished difference Result 5718 states and 7802 transitions. [2020-09-25 06:45:16,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:45:16,899 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 223 [2020-09-25 06:45:16,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:16,916 INFO L225 Difference]: With dead ends: 5718 [2020-09-25 06:45:16,916 INFO L226 Difference]: Without dead ends: 3370 [2020-09-25 06:45:16,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:45:16,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2020-09-25 06:45:17,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3138. [2020-09-25 06:45:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-09-25 06:45:17,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4055 transitions. [2020-09-25 06:45:17,018 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4055 transitions. Word has length 223 [2020-09-25 06:45:17,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:17,018 INFO L479 AbstractCegarLoop]: Abstraction has 3138 states and 4055 transitions. [2020-09-25 06:45:17,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:45:17,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4055 transitions. [2020-09-25 06:45:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-25 06:45:17,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:17,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:17,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:45:17,034 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:17,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:17,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1859791105, now seen corresponding path program 1 times [2020-09-25 06:45:17,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:17,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432877820] [2020-09-25 06:45:17,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:17,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:17,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:18,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:18,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:19,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:19,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:19,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:20,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking...