/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:31:43,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:31:43,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:31:43,144 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:31:43,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:31:43,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:31:43,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:31:43,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:31:43,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:31:43,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:31:43,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:31:43,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:31:43,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:31:43,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:31:43,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:31:43,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:31:43,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:31:43,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:31:43,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:31:43,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:31:43,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:31:43,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:31:43,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:31:43,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:31:43,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:31:43,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:31:43,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:31:43,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:31:43,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:31:43,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:31:43,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:31:43,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:31:43,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:31:43,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:31:43,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:31:43,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:31:43,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:31:43,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:31:43,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:31:43,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:31:43,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:31:43,211 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 [2020-10-14 03:31:43,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:31:43,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:31:43,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:31:43,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:31:43,235 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:31:43,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:31:43,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:31:43,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:31:43,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:31:43,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:31:43,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:31:43,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:31:43,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:31:43,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:31:43,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:31:43,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:31:43,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:31:43,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:31:43,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:31:43,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:31:43,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:31:43,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:31:43,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:31:43,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:31:43,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:31:43,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:31:43,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:31:43,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:31:43,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:31:43,239 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:31:43,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:31:43,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:31:43,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:31:43,588 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:31:43,588 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:31:43,589 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label35.c [2020-10-14 03:31:43,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d6f64fb2/52312a2bef704936b06856765d80035d/FLAG7a9cc1e23 [2020-10-14 03:31:44,486 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:31:44,486 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label35.c [2020-10-14 03:31:44,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d6f64fb2/52312a2bef704936b06856765d80035d/FLAG7a9cc1e23 [2020-10-14 03:31:44,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6d6f64fb2/52312a2bef704936b06856765d80035d [2020-10-14 03:31:44,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:31:44,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:31:44,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:31:44,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:31:44,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:31:44,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:31:44" (1/1) ... [2020-10-14 03:31:44,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40201f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:44, skipping insertion in model container [2020-10-14 03:31:44,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:31:44" (1/1) ... [2020-10-14 03:31:44,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:31:44,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:31:45,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:31:45,745 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:31:46,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:31:46,241 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:31:46,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:46 WrapperNode [2020-10-14 03:31:46,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:31:46,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:31:46,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:31:46,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:31:46,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:46" (1/1) ... [2020-10-14 03:31:46,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:46" (1/1) ... [2020-10-14 03:31:46,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:46" (1/1) ... [2020-10-14 03:31:46,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:46" (1/1) ... [2020-10-14 03:31:46,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:46" (1/1) ... [2020-10-14 03:31:46,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:46" (1/1) ... [2020-10-14 03:31:46,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:46" (1/1) ... [2020-10-14 03:31:46,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:31:46,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:31:46,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:31:46,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:31:46,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:46" (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 [2020-10-14 03:31:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:31:46,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:31:46,570 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:31:46,570 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:31:46,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:31:46,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:31:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:31:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:31:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:31:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:31:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:31:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:31:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:31:52,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:31:52,633 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:31:52,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:31:52 BoogieIcfgContainer [2020-10-14 03:31:52,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:31:52,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:31:52,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:31:52,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:31:52,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:31:44" (1/3) ... [2020-10-14 03:31:52,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417d3dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:31:52, skipping insertion in model container [2020-10-14 03:31:52,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:31:46" (2/3) ... [2020-10-14 03:31:52,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417d3dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:31:52, skipping insertion in model container [2020-10-14 03:31:52,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:31:52" (3/3) ... [2020-10-14 03:31:52,653 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label35.c [2020-10-14 03:31:52,667 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:31:52,678 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:31:52,696 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:31:52,729 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:31:52,729 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:31:52,730 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:31:52,730 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:31:52,730 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:31:52,730 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:31:52,730 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:31:52,730 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:31:52,769 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 03:31:52,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 03:31:52,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:31:52,779 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] [2020-10-14 03:31:52,780 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:31:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:31:52,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1512840592, now seen corresponding path program 1 times [2020-10-14 03:31:52,798 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:31:52,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487544807] [2020-10-14 03:31:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:31:52,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:53,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:53,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:53,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-14 03:31:53,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-14 03:31:53,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:53,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:53,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:31:53,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:31:53,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 03:31:53,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:31:53,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:31:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:53,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:53,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:31:53,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:31:53,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:31:53,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 03:31:53,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:31:53,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:31:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:31:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:31:53,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:31:53,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:31:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:31:53,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487544807] [2020-10-14 03:31:53,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:31:53,616 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:31:53,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403406484] [2020-10-14 03:31:53,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:31:53,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:31:53,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:31:53,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:31:53,646 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 03:31:59,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:31:59,061 INFO L93 Difference]: Finished difference Result 1203 states and 2166 transitions. [2020-10-14 03:31:59,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:31:59,063 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-14 03:31:59,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:31:59,084 INFO L225 Difference]: With dead ends: 1203 [2020-10-14 03:31:59,085 INFO L226 Difference]: Without dead ends: 702 [2020-10-14 03:31:59,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:31:59,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-10-14 03:31:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 696. [2020-10-14 03:31:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-10-14 03:31:59,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1015 transitions. [2020-10-14 03:31:59,198 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1015 transitions. Word has length 42 [2020-10-14 03:31:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:31:59,199 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 1015 transitions. [2020-10-14 03:31:59,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:31:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1015 transitions. [2020-10-14 03:31:59,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 03:31:59,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:31:59,205 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:31:59,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:31:59,206 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:31:59,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:31:59,206 INFO L82 PathProgramCache]: Analyzing trace with hash 210628889, now seen corresponding path program 1 times [2020-10-14 03:31:59,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:31:59,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064374262] [2020-10-14 03:31:59,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:31:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:31:59,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:31:59,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:00,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:00,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:00,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 03:32:00,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:32:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1288 [2020-10-14 03:32:00,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:00,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:00,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 03:32:00,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 03:32:00,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:32:00,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:00,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:00,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:00,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:00,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:00,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:32:00,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:00,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:00,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:00,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:00,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:00,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:00,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:00,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:00,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:00,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:32:00,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:00,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 03:32:00,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:00,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:00,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 03:32:00,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:00,844 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:00,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064374262] [2020-10-14 03:32:00,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:00,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:00,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514899720] [2020-10-14 03:32:00,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:00,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:00,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:00,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:00,848 INFO L87 Difference]: Start difference. First operand 696 states and 1015 transitions. Second operand 5 states. [2020-10-14 03:32:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:08,269 INFO L93 Difference]: Finished difference Result 2018 states and 2972 transitions. [2020-10-14 03:32:08,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:08,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-14 03:32:08,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:08,284 INFO L225 Difference]: With dead ends: 2018 [2020-10-14 03:32:08,285 INFO L226 Difference]: Without dead ends: 1328 [2020-10-14 03:32:08,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:32:08,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2020-10-14 03:32:08,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1324. [2020-10-14 03:32:08,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1324 states. [2020-10-14 03:32:08,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1324 states to 1324 states and 1879 transitions. [2020-10-14 03:32:08,368 INFO L78 Accepts]: Start accepts. Automaton has 1324 states and 1879 transitions. Word has length 121 [2020-10-14 03:32:08,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:08,371 INFO L479 AbstractCegarLoop]: Abstraction has 1324 states and 1879 transitions. [2020-10-14 03:32:08,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:08,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1324 states and 1879 transitions. [2020-10-14 03:32:08,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 03:32:08,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:08,385 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:32:08,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:32:08,388 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:08,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:08,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1413374097, now seen corresponding path program 1 times [2020-10-14 03:32:08,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:08,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13736086] [2020-10-14 03:32:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:08,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:08,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:09,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:09,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 03:32:09,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:32:09,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-10-14 03:32:09,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:09,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:09,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:32:09,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 03:32:09,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:09,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:09,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:09,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:09,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:09,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:09,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:32:09,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:09,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:09,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:09,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:09,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:09,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:09,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:09,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:09,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:09,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:32:09,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:09,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 03:32:09,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:09,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:09,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:09,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:32:09,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:32:09,631 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:09,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13736086] [2020-10-14 03:32:09,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:09,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:09,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062205231] [2020-10-14 03:32:09,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:09,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:09,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:09,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:09,636 INFO L87 Difference]: Start difference. First operand 1324 states and 1879 transitions. Second operand 5 states. [2020-10-14 03:32:16,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:16,973 INFO L93 Difference]: Finished difference Result 3898 states and 5603 transitions. [2020-10-14 03:32:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:16,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-10-14 03:32:16,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:16,991 INFO L225 Difference]: With dead ends: 3898 [2020-10-14 03:32:16,991 INFO L226 Difference]: Without dead ends: 2580 [2020-10-14 03:32:16,995 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 [2020-10-14 03:32:16,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2020-10-14 03:32:17,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 1960. [2020-10-14 03:32:17,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1960 states. [2020-10-14 03:32:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 2613 transitions. [2020-10-14 03:32:17,059 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 2613 transitions. Word has length 125 [2020-10-14 03:32:17,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:17,060 INFO L479 AbstractCegarLoop]: Abstraction has 1960 states and 2613 transitions. [2020-10-14 03:32:17,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 2613 transitions. [2020-10-14 03:32:17,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 03:32:17,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:17,063 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:32:17,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:32:17,063 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:17,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:17,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1476577176, now seen corresponding path program 1 times [2020-10-14 03:32:17,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:17,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342118000] [2020-10-14 03:32:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:17,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:17,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:17,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:18,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:18,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:18,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 03:32:18,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:32:18,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1443 [2020-10-14 03:32:18,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:18,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:18,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:18,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-14 03:32:18,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 03:32:18,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:18,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:18,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:18,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:18,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:18,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:18,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:32:18,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:18,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:18,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:18,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:18,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:18,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:18,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 03:32:18,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:18,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 03:32:18,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:18,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 03:32:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:18,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342118000] [2020-10-14 03:32:18,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:18,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:18,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309067694] [2020-10-14 03:32:18,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:18,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:18,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:18,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:18,798 INFO L87 Difference]: Start difference. First operand 1960 states and 2613 transitions. Second operand 5 states. [2020-10-14 03:32:27,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:27,516 INFO L93 Difference]: Finished difference Result 5162 states and 7073 transitions. [2020-10-14 03:32:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:27,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 03:32:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:27,546 INFO L225 Difference]: With dead ends: 5162 [2020-10-14 03:32:27,547 INFO L226 Difference]: Without dead ends: 3208 [2020-10-14 03:32:27,554 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 [2020-10-14 03:32:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2020-10-14 03:32:27,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 2586. [2020-10-14 03:32:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2586 states. [2020-10-14 03:32:27,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3331 transitions. [2020-10-14 03:32:27,708 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3331 transitions. Word has length 128 [2020-10-14 03:32:27,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:27,709 INFO L479 AbstractCegarLoop]: Abstraction has 2586 states and 3331 transitions. [2020-10-14 03:32:27,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:27,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3331 transitions. [2020-10-14 03:32:27,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-14 03:32:27,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:27,714 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:27,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:32:27,715 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:27,715 INFO L82 PathProgramCache]: Analyzing trace with hash 115500428, now seen corresponding path program 1 times [2020-10-14 03:32:27,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:27,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624237042] [2020-10-14 03:32:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:27,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:28,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:28,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:28,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-14 03:32:28,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:32:28,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-10-14 03:32:28,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:28,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-14 03:32:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 03:32:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:28,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:28,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:28,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:28,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:28,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:32:28,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:28,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:28,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:28,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:28,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:28,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:29,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:29,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 03:32:29,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:29,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 03:32:29,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:29,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:29,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:29,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 03:32:29,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 03:32:29,121 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:29,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624237042] [2020-10-14 03:32:29,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:29,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:29,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943684384] [2020-10-14 03:32:29,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:29,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:29,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:29,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:29,126 INFO L87 Difference]: Start difference. First operand 2586 states and 3331 transitions. Second operand 5 states. [2020-10-14 03:32:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:36,212 INFO L93 Difference]: Finished difference Result 5792 states and 7628 transitions. [2020-10-14 03:32:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:36,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-14 03:32:36,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:36,227 INFO L225 Difference]: With dead ends: 5792 [2020-10-14 03:32:36,228 INFO L226 Difference]: Without dead ends: 3212 [2020-10-14 03:32:36,235 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 [2020-10-14 03:32:36,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2020-10-14 03:32:36,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 3206. [2020-10-14 03:32:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3206 states. [2020-10-14 03:32:36,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3206 states to 3206 states and 4038 transitions. [2020-10-14 03:32:36,328 INFO L78 Accepts]: Start accepts. Automaton has 3206 states and 4038 transitions. Word has length 158 [2020-10-14 03:32:36,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:36,329 INFO L479 AbstractCegarLoop]: Abstraction has 3206 states and 4038 transitions. [2020-10-14 03:32:36,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:36,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3206 states and 4038 transitions. [2020-10-14 03:32:36,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 03:32:36,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:36,333 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:36,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:32:36,334 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:36,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:36,334 INFO L82 PathProgramCache]: Analyzing trace with hash -242185991, now seen corresponding path program 1 times [2020-10-14 03:32:36,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:36,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480894313] [2020-10-14 03:32:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:36,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:37,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:37,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 03:32:37,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:32:37,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-10-14 03:32:37,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:37,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:37,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 03:32:37,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 03:32:37,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:32:37,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:37,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:37,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:37,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:32:37,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:37,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:37,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:37,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:37,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:37,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:37,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:32:37,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:37,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 03:32:37,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:37,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:37,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:32:37,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:37,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480894313] [2020-10-14 03:32:37,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:37,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:37,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662527824] [2020-10-14 03:32:37,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:37,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:37,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:37,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:37,733 INFO L87 Difference]: Start difference. First operand 3206 states and 4038 transitions. Second operand 5 states. [2020-10-14 03:32:45,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:45,659 INFO L93 Difference]: Finished difference Result 7968 states and 10381 transitions. [2020-10-14 03:32:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:45,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-14 03:32:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:45,681 INFO L225 Difference]: With dead ends: 7968 [2020-10-14 03:32:45,681 INFO L226 Difference]: Without dead ends: 4768 [2020-10-14 03:32:45,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:32:45,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4768 states. [2020-10-14 03:32:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4768 to 4760. [2020-10-14 03:32:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4760 states. [2020-10-14 03:32:45,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4760 states to 4760 states and 5833 transitions. [2020-10-14 03:32:45,815 INFO L78 Accepts]: Start accepts. Automaton has 4760 states and 5833 transitions. Word has length 171 [2020-10-14 03:32:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:45,816 INFO L479 AbstractCegarLoop]: Abstraction has 4760 states and 5833 transitions. [2020-10-14 03:32:45,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 4760 states and 5833 transitions. [2020-10-14 03:32:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-14 03:32:45,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:45,821 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:45,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:32:45,822 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:45,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:45,822 INFO L82 PathProgramCache]: Analyzing trace with hash 853130749, now seen corresponding path program 1 times [2020-10-14 03:32:45,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:45,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771297491] [2020-10-14 03:32:45,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:45,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:46,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:46,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:46,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-14 03:32:46,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:32:46,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-10-14 03:32:46,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:46,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:32:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-14 03:32:46,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 03:32:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:47,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:32:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:47,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:47,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:47,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:32:47,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:47,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:32:47,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:47,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:32:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:47,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:32:47,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:47,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:32:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:47,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:47,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:32:47,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 03:32:47,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:32:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 03:32:47,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:32:47,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:32:47,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:32:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:32:47,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 03:32:47,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:32:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:32:47,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771297491] [2020-10-14 03:32:47,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:32:47,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:32:47,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397364169] [2020-10-14 03:32:47,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:32:47,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:32:47,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:32:47,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:32:47,426 INFO L87 Difference]: Start difference. First operand 4760 states and 5833 transitions. Second operand 5 states. [2020-10-14 03:32:58,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:32:58,258 INFO L93 Difference]: Finished difference Result 13575 states and 16994 transitions. [2020-10-14 03:32:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:32:58,260 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-14 03:32:58,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:32:58,298 INFO L225 Difference]: With dead ends: 13575 [2020-10-14 03:32:58,299 INFO L226 Difference]: Without dead ends: 8821 [2020-10-14 03:32:58,311 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 [2020-10-14 03:32:58,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8821 states. [2020-10-14 03:32:58,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8821 to 8805. [2020-10-14 03:32:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8805 states. [2020-10-14 03:32:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8805 states to 8805 states and 10835 transitions. [2020-10-14 03:32:58,551 INFO L78 Accepts]: Start accepts. Automaton has 8805 states and 10835 transitions. Word has length 185 [2020-10-14 03:32:58,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:32:58,552 INFO L479 AbstractCegarLoop]: Abstraction has 8805 states and 10835 transitions. [2020-10-14 03:32:58,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:32:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 8805 states and 10835 transitions. [2020-10-14 03:32:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-14 03:32:58,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:32:58,559 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:32:58,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:32:58,559 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:32:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:32:58,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2101661283, now seen corresponding path program 1 times [2020-10-14 03:32:58,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:32:58,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1102080344] [2020-10-14 03:32:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:32:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:32:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:58,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:58,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:59,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:32:59,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:00,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:01,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:03,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:03,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-14 03:33:03,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 03:33:03,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-14 03:33:03,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:03,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:03,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:03,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 03:33:03,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:33:03,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:03,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:03,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:03,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:03,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:03,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:03,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:03,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:33:03,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:03,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:03,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:03,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:03,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:03,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:33:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:03,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:03,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:03,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:33:03,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:03,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:33:03,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:03,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:03,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:03,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:03,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:03,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 03:33:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:03,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:03,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:03,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 03:33:03,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:03,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 03:33:03,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:03,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-14 03:33:03,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:33:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 03:33:03,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1102080344] [2020-10-14 03:33:03,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:33:03,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:33:03,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046186463] [2020-10-14 03:33:03,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:33:03,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:03,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:33:03,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:33:03,896 INFO L87 Difference]: Start difference. First operand 8805 states and 10835 transitions. Second operand 5 states. [2020-10-14 03:33:10,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:10,775 INFO L93 Difference]: Finished difference Result 20701 states and 26350 transitions. [2020-10-14 03:33:10,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:33:10,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2020-10-14 03:33:10,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:10,833 INFO L225 Difference]: With dead ends: 20701 [2020-10-14 03:33:10,834 INFO L226 Difference]: Without dead ends: 11902 [2020-10-14 03:33:10,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:33:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11902 states. [2020-10-14 03:33:11,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11902 to 11898. [2020-10-14 03:33:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11898 states. [2020-10-14 03:33:11,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11898 states to 11898 states and 14679 transitions. [2020-10-14 03:33:11,154 INFO L78 Accepts]: Start accepts. Automaton has 11898 states and 14679 transitions. Word has length 194 [2020-10-14 03:33:11,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:11,155 INFO L479 AbstractCegarLoop]: Abstraction has 11898 states and 14679 transitions. [2020-10-14 03:33:11,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:33:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 11898 states and 14679 transitions. [2020-10-14 03:33:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-14 03:33:11,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:11,163 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:33:11,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 03:33:11,164 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:11,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:11,165 INFO L82 PathProgramCache]: Analyzing trace with hash 2077660833, now seen corresponding path program 1 times [2020-10-14 03:33:11,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:11,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560721570] [2020-10-14 03:33:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:11,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:11,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:11,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:12,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:12,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:15,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:15,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-14 03:33:15,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:33:15,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4783 [2020-10-14 03:33:15,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:15,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-10-14 03:33:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:33:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:16,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:16,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:16,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:16,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:16,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:16,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:33:16,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:16,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:16,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:16,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:16,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:16,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:16,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:16,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:16,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:16,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:16,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:33:16,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:16,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 03:33:16,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:16,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:16,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:16,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:33:16,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 03:33:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:16,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:16,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:16,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:33:16,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:16,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 03:33:16,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:16,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-14 03:33:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:33:16,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 03:33:16,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560721570] [2020-10-14 03:33:16,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:33:16,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 03:33:16,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778400562] [2020-10-14 03:33:16,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:33:16,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:16,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:33:16,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:33:16,460 INFO L87 Difference]: Start difference. First operand 11898 states and 14679 transitions. Second operand 5 states. [2020-10-14 03:33:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:27,586 INFO L93 Difference]: Finished difference Result 27813 states and 35443 transitions. [2020-10-14 03:33:27,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:33:27,593 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-14 03:33:27,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:27,664 INFO L225 Difference]: With dead ends: 27813 [2020-10-14 03:33:27,664 INFO L226 Difference]: Without dead ends: 15921 [2020-10-14 03:33:27,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 03:33:27,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15921 states. [2020-10-14 03:33:28,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15921 to 15917. [2020-10-14 03:33:28,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15917 states. [2020-10-14 03:33:28,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15917 states to 15917 states and 19365 transitions. [2020-10-14 03:33:28,084 INFO L78 Accepts]: Start accepts. Automaton has 15917 states and 19365 transitions. Word has length 220 [2020-10-14 03:33:28,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:28,084 INFO L479 AbstractCegarLoop]: Abstraction has 15917 states and 19365 transitions. [2020-10-14 03:33:28,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:33:28,085 INFO L276 IsEmpty]: Start isEmpty. Operand 15917 states and 19365 transitions. [2020-10-14 03:33:28,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2020-10-14 03:33:28,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:28,104 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, 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, 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] [2020-10-14 03:33:28,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 03:33:28,105 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:28,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:28,105 INFO L82 PathProgramCache]: Analyzing trace with hash 32104165, now seen corresponding path program 1 times [2020-10-14 03:33:28,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:28,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990216338] [2020-10-14 03:33:28,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:28,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:28,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:28,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:31,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:33,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:33,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-14 03:33:33,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:33:33,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 03:33:33,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:33,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:33,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:33,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 03:33:33,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 03:33:33,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:33,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:33,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:33,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:33,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:33,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:33,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:33:33,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:33,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:33,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:33,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:33,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:33,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:33,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:33,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:33,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 03:33:33,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:33,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 03:33:33,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:33,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:33,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:33,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-14 03:33:33,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:33,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-14 03:33:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:33,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:33,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:33,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 03:33:33,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:33,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 03:33:33,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:33,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:33,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:33,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:33,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 03:33:33,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:33:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 189 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:33:33,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990216338] [2020-10-14 03:33:33,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:33,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:33,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917257731] [2020-10-14 03:33:33,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:33,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:33,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:33,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:33,977 INFO L87 Difference]: Start difference. First operand 15917 states and 19365 transitions. Second operand 7 states. [2020-10-14 03:33:50,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:33:50,328 INFO L93 Difference]: Finished difference Result 41773 states and 54746 transitions. [2020-10-14 03:33:50,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:33:50,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 316 [2020-10-14 03:33:50,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:33:50,491 INFO L225 Difference]: With dead ends: 41773 [2020-10-14 03:33:50,491 INFO L226 Difference]: Without dead ends: 22409 [2020-10-14 03:33:50,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:33:50,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22409 states. [2020-10-14 03:33:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22409 to 20341. [2020-10-14 03:33:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20341 states. [2020-10-14 03:33:51,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20341 states to 20341 states and 24147 transitions. [2020-10-14 03:33:51,224 INFO L78 Accepts]: Start accepts. Automaton has 20341 states and 24147 transitions. Word has length 316 [2020-10-14 03:33:51,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:33:51,225 INFO L479 AbstractCegarLoop]: Abstraction has 20341 states and 24147 transitions. [2020-10-14 03:33:51,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:33:51,225 INFO L276 IsEmpty]: Start isEmpty. Operand 20341 states and 24147 transitions. [2020-10-14 03:33:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-14 03:33:51,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:33:51,246 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:33:51,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 03:33:51,246 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:33:51,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:33:51,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1882671900, now seen corresponding path program 1 times [2020-10-14 03:33:51,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:33:51,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459980333] [2020-10-14 03:33:51,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:33:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:51,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:51,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:53,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:56,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:56,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-14 03:33:56,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:33:56,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 03:33:56,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:56,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:56,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:56,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 03:33:56,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 03:33:56,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:56,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:33:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:56,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:56,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:56,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:33:56,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:33:56,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:56,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:33:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:56,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:33:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:56,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:33:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:56,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:56,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:56,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 03:33:56,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 03:33:56,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:56,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:33:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:33:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:33:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:56,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 03:33:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:33:56,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:33:56,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:33:56,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-14 03:33:56,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:33:56,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 03:33:56,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:33:56,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:33:56,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:33:56,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:33:56,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 03:33:56,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:33:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:33:56,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459980333] [2020-10-14 03:33:56,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:33:56,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:33:56,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890930510] [2020-10-14 03:33:56,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:33:56,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:33:56,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:33:56,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:33:56,936 INFO L87 Difference]: Start difference. First operand 20341 states and 24147 transitions. Second operand 7 states. [2020-10-14 03:34:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:14,013 INFO L93 Difference]: Finished difference Result 58409 states and 72756 transitions. [2020-10-14 03:34:14,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:34:14,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-14 03:34:14,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:14,214 INFO L225 Difference]: With dead ends: 58409 [2020-10-14 03:34:14,214 INFO L226 Difference]: Without dead ends: 34922 [2020-10-14 03:34:14,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:34:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34922 states. [2020-10-14 03:34:15,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34922 to 25319. [2020-10-14 03:34:15,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25319 states. [2020-10-14 03:34:15,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25319 states to 25319 states and 29381 transitions. [2020-10-14 03:34:15,271 INFO L78 Accepts]: Start accepts. Automaton has 25319 states and 29381 transitions. Word has length 321 [2020-10-14 03:34:15,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:15,272 INFO L479 AbstractCegarLoop]: Abstraction has 25319 states and 29381 transitions. [2020-10-14 03:34:15,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:34:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 25319 states and 29381 transitions. [2020-10-14 03:34:15,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-10-14 03:34:15,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:15,306 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-10-14 03:34:15,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 03:34:15,307 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:15,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:15,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1042723594, now seen corresponding path program 1 times [2020-10-14 03:34:15,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:15,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839655749] [2020-10-14 03:34:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:15,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:15,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:16,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:16,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:18,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:19,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:20,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:20,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 358 [2020-10-14 03:34:20,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 03:34:20,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 03:34:20,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:20,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:20,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 189 [2020-10-14 03:34:20,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 03:34:20,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:20,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:20,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:20,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:20,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:20,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:20,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:34:20,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:20,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:20,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:20,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:20,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:20,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:20,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:34:20,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:20,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 03:34:20,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:20,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:20,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:20,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:20,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:20,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 03:34:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:20,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:20,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:20,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:34:20,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:20,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 03:34:20,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:20,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:20,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:20,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:20,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:34:20,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:20,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-14 03:34:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:20,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:20,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:20,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 03:34:20,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:34:20,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-14 03:34:20,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:20,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:20,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 03:34:20,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 03:34:21,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839655749] [2020-10-14 03:34:21,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:21,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:34:21,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491059331] [2020-10-14 03:34:21,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:34:21,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:21,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:34:21,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:34:21,017 INFO L87 Difference]: Start difference. First operand 25319 states and 29381 transitions. Second operand 7 states. [2020-10-14 03:34:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:34,856 INFO L93 Difference]: Finished difference Result 58776 states and 69851 transitions. [2020-10-14 03:34:34,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:34:34,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 344 [2020-10-14 03:34:34,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:34,954 INFO L225 Difference]: With dead ends: 58776 [2020-10-14 03:34:34,954 INFO L226 Difference]: Without dead ends: 33463 [2020-10-14 03:34:35,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:34:35,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33463 states. [2020-10-14 03:34:35,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33463 to 28854. [2020-10-14 03:34:35,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28854 states. [2020-10-14 03:34:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28854 states to 28854 states and 33471 transitions. [2020-10-14 03:34:35,797 INFO L78 Accepts]: Start accepts. Automaton has 28854 states and 33471 transitions. Word has length 344 [2020-10-14 03:34:35,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:35,798 INFO L479 AbstractCegarLoop]: Abstraction has 28854 states and 33471 transitions. [2020-10-14 03:34:35,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:34:35,799 INFO L276 IsEmpty]: Start isEmpty. Operand 28854 states and 33471 transitions. [2020-10-14 03:34:35,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-14 03:34:35,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:35,828 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-10-14 03:34:35,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 03:34:35,829 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:35,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:35,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1091794314, now seen corresponding path program 1 times [2020-10-14 03:34:35,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:35,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370701559] [2020-10-14 03:34:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:35,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:35,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:36,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:36,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:37,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:39,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:40,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:40,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 376 [2020-10-14 03:34:40,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 03:34:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 03:34:40,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:40,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 03:34:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 188 [2020-10-14 03:34:40,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 03:34:40,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:40,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:41,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:41,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:41,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:41,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:34:41,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:41,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:41,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:41,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:41,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:41,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:41,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:41,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 03:34:41,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 03:34:41,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:41,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:41,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:41,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 03:34:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:41,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:41,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 03:34:41,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:41,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 03:34:41,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:41,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 03:34:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:41,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 03:34:41,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:34:41,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-14 03:34:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:41,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:41,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:41,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:41,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 03:34:41,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:34:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 03:34:41,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:41,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:41,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 03:34:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:41,645 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 280 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-14 03:34:41,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370701559] [2020-10-14 03:34:41,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:34:41,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 03:34:41,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834782461] [2020-10-14 03:34:41,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 03:34:41,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:34:41,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 03:34:41,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 03:34:41,647 INFO L87 Difference]: Start difference. First operand 28854 states and 33471 transitions. Second operand 8 states. [2020-10-14 03:34:53,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:34:53,880 INFO L93 Difference]: Finished difference Result 65268 states and 81101 transitions. [2020-10-14 03:34:53,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 03:34:53,882 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 362 [2020-10-14 03:34:53,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:34:54,033 INFO L225 Difference]: With dead ends: 65268 [2020-10-14 03:34:54,033 INFO L226 Difference]: Without dead ends: 33900 [2020-10-14 03:34:54,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-10-14 03:34:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33900 states. [2020-10-14 03:34:55,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33900 to 31951. [2020-10-14 03:34:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31951 states. [2020-10-14 03:34:55,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31951 states to 31951 states and 36734 transitions. [2020-10-14 03:34:55,154 INFO L78 Accepts]: Start accepts. Automaton has 31951 states and 36734 transitions. Word has length 362 [2020-10-14 03:34:55,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:34:55,156 INFO L479 AbstractCegarLoop]: Abstraction has 31951 states and 36734 transitions. [2020-10-14 03:34:55,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 03:34:55,156 INFO L276 IsEmpty]: Start isEmpty. Operand 31951 states and 36734 transitions. [2020-10-14 03:34:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-14 03:34:55,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:34:55,177 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, 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, 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] [2020-10-14 03:34:55,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 03:34:55,177 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:34:55,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:34:55,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1403254915, now seen corresponding path program 1 times [2020-10-14 03:34:55,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:34:55,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124071934] [2020-10-14 03:34:55,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:34:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:55,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:55,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:55,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:56,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:59,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:59,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-14 03:34:59,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:34:59,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3891 [2020-10-14 03:34:59,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:59,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 195 [2020-10-14 03:34:59,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 03:34:59,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:59,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:34:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:59,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:59,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:34:59,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:59,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 03:34:59,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:59,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:34:59,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:34:59,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:59,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:34:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:59,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:59,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:59,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 03:34:59,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:59,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-14 03:34:59,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:59,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:59,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:34:59,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:34:59,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-14 03:34:59,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:34:59,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-10-14 03:34:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:34:59,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:34:59,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:34:59,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 03:34:59,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:34:59,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-14 03:34:59,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:34:59,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:34:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:34:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:34:59,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 03:34:59,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:35:00,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124071934] [2020-10-14 03:35:00,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:00,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:35:00,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46558677] [2020-10-14 03:35:00,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:35:00,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:00,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:35:00,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:35:00,026 INFO L87 Difference]: Start difference. First operand 31951 states and 36734 transitions. Second operand 7 states. [2020-10-14 03:35:11,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:11,231 INFO L93 Difference]: Finished difference Result 67945 states and 78411 transitions. [2020-10-14 03:35:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:35:11,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-14 03:35:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:11,322 INFO L225 Difference]: With dead ends: 67945 [2020-10-14 03:35:11,322 INFO L226 Difference]: Without dead ends: 33183 [2020-10-14 03:35:11,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:35:11,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33183 states. [2020-10-14 03:35:11,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33183 to 29148. [2020-10-14 03:35:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29148 states. [2020-10-14 03:35:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29148 states to 29148 states and 32341 transitions. [2020-10-14 03:35:11,901 INFO L78 Accepts]: Start accepts. Automaton has 29148 states and 32341 transitions. Word has length 383 [2020-10-14 03:35:11,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:11,902 INFO L479 AbstractCegarLoop]: Abstraction has 29148 states and 32341 transitions. [2020-10-14 03:35:11,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:11,902 INFO L276 IsEmpty]: Start isEmpty. Operand 29148 states and 32341 transitions. [2020-10-14 03:35:11,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2020-10-14 03:35:11,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:11,915 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-10-14 03:35:11,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 03:35:11,916 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:11,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:11,916 INFO L82 PathProgramCache]: Analyzing trace with hash 991200697, now seen corresponding path program 1 times [2020-10-14 03:35:11,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:11,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107740688] [2020-10-14 03:35:11,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:12,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:12,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:12,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:16,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:16,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 492 [2020-10-14 03:35:17,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:35:17,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 03:35:17,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:17,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 292 [2020-10-14 03:35:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-14 03:35:17,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:17,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:35:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:17,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:17,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:17,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:35:17,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:17,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:35:17,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:17,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:17,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:35:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:17,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:17,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:17,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 03:35:17,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:17,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:35:17,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:17,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:35:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:17,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:35:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:17,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 03:35:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:17,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:17,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 03:35:17,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:17,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 03:35:17,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:17,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:35:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:35:17,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 03:35:17,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:17,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-10-14 03:35:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:17,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:35:17,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 03:35:17,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:35:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 03:35:17,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:35:17,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:35:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:35:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:35:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-14 03:35:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:35:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 340 proven. 2 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-14 03:35:17,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107740688] [2020-10-14 03:35:17,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:35:17,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:35:17,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961185255] [2020-10-14 03:35:17,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:35:17,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:35:17,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:35:17,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:35:17,737 INFO L87 Difference]: Start difference. First operand 29148 states and 32341 transitions. Second operand 7 states. [2020-10-14 03:35:30,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:35:30,637 INFO L93 Difference]: Finished difference Result 58989 states and 65474 transitions. [2020-10-14 03:35:30,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:35:30,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 478 [2020-10-14 03:35:30,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:35:30,730 INFO L225 Difference]: With dead ends: 58989 [2020-10-14 03:35:30,731 INFO L226 Difference]: Without dead ends: 29847 [2020-10-14 03:35:30,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:35:30,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29847 states. [2020-10-14 03:35:31,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29847 to 29520. [2020-10-14 03:35:31,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29520 states. [2020-10-14 03:35:31,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29520 states to 29520 states and 32709 transitions. [2020-10-14 03:35:31,222 INFO L78 Accepts]: Start accepts. Automaton has 29520 states and 32709 transitions. Word has length 478 [2020-10-14 03:35:31,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:35:31,223 INFO L479 AbstractCegarLoop]: Abstraction has 29520 states and 32709 transitions. [2020-10-14 03:35:31,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:35:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 29520 states and 32709 transitions. [2020-10-14 03:35:31,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2020-10-14 03:35:31,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:35:31,237 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2020-10-14 03:35:31,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 03:35:31,237 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:35:31,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:35:31,238 INFO L82 PathProgramCache]: Analyzing trace with hash 408803823, now seen corresponding path program 1 times [2020-10-14 03:35:31,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:35:31,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354376944] [2020-10-14 03:35:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:35:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:35:31,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:35:31,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking...