/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/Problem12_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:50:06,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:50:06,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:50:06,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:50:06,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:50:06,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:50:06,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:50:06,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:50:06,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:50:06,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:50:06,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:50:06,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:50:06,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:50:06,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:50:06,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:50:06,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:50:06,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:50:06,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:50:06,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:50:06,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:50:06,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:50:06,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:50:06,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:50:06,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:50:06,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:50:06,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:50:06,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:50:06,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:50:06,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:50:06,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:50:06,208 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:50:06,209 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:50:06,210 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:50:06,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:50:06,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:50:06,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:50:06,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:50:06,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:50:06,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:50:06,221 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:50:06,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:50:06,222 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 02:50:06,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:50:06,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:50:06,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:50:06,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:50:06,266 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:50:06,267 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:50:06,267 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:50:06,267 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:50:06,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:50:06,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:50:06,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:50:06,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:50:06,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:50:06,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:50:06,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:50:06,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:50:06,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:50:06,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:50:06,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:50:06,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:50:06,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:50:06,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:50:06,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:50:06,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:50:06,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:50:06,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:50:06,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:50:06,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:50:06,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:50:06,275 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 02:50:06,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:50:06,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:50:06,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:50:06,625 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:50:06,626 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:50:06,627 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label37.c [2020-10-14 02:50:06,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c514dc7f6/5b23a21f03854f439156d6020ca3db62/FLAGf46917b59 [2020-10-14 02:50:07,429 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:50:07,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label37.c [2020-10-14 02:50:07,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c514dc7f6/5b23a21f03854f439156d6020ca3db62/FLAGf46917b59 [2020-10-14 02:50:07,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c514dc7f6/5b23a21f03854f439156d6020ca3db62 [2020-10-14 02:50:07,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:50:07,519 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:50:07,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:50:07,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:50:07,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:50:07,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:50:07" (1/1) ... [2020-10-14 02:50:07,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fc81bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:07, skipping insertion in model container [2020-10-14 02:50:07,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:50:07" (1/1) ... [2020-10-14 02:50:07,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:50:07,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:50:09,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:50:09,179 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:50:09,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:50:09,787 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:50:09,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:09 WrapperNode [2020-10-14 02:50:09,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:50:09,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:50:09,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:50:09,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:50:09,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:09" (1/1) ... [2020-10-14 02:50:09,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:09" (1/1) ... [2020-10-14 02:50:09,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:09" (1/1) ... [2020-10-14 02:50:09,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:09" (1/1) ... [2020-10-14 02:50:10,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:09" (1/1) ... [2020-10-14 02:50:10,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:09" (1/1) ... [2020-10-14 02:50:10,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:09" (1/1) ... [2020-10-14 02:50:10,136 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:50:10,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:50:10,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:50:10,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:50:10,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:09" (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 02:50:10,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:50:10,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:50:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:50:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:50:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:50:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:50:10,221 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:50:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:50:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:50:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:50:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:50:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:50:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:50:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:50:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:50:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:50:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:50:15,234 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:50:15,235 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:50:15,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:50:15 BoogieIcfgContainer [2020-10-14 02:50:15,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:50:15,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:50:15,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:50:15,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:50:15,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:50:07" (1/3) ... [2020-10-14 02:50:15,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d9ce04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:50:15, skipping insertion in model container [2020-10-14 02:50:15,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:50:09" (2/3) ... [2020-10-14 02:50:15,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d9ce04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:50:15, skipping insertion in model container [2020-10-14 02:50:15,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:50:15" (3/3) ... [2020-10-14 02:50:15,281 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label37.c [2020-10-14 02:50:15,307 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:50:15,324 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:50:15,350 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:50:15,381 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:50:15,381 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:50:15,381 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:50:15,382 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:50:15,382 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:50:15,382 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:50:15,382 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:50:15,382 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:50:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:50:15,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 02:50:15,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:15,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:50:15,427 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:15,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:15,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1531102306, now seen corresponding path program 1 times [2020-10-14 02:50:15,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:15,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [769655019] [2020-10-14 02:50:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:15,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:15,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:15,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 02:50:15,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-14 02:50:15,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:15,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:50:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:50:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 02:50:15,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 02:50:16,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:16,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:16,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:16,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:16,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 02:50:16,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:16,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:16,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:16,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:16,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:50:16,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:16,145 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 02:50:16,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [769655019] [2020-10-14 02:50:16,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:50:16,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:50:16,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814700701] [2020-10-14 02:50:16,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:50:16,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:16,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:50:16,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:50:16,175 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:50:24,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:24,756 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:50:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:50:24,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-10-14 02:50:24,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:24,800 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:50:24,800 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:50:24,813 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 02:50:24,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:50:24,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:50:24,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:50:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 02:50:24,987 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 19 [2020-10-14 02:50:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:24,987 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 02:50:24,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:50:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 02:50:24,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 02:50:24,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:24,993 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:24,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:50:24,994 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:24,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:24,995 INFO L82 PathProgramCache]: Analyzing trace with hash -2072609957, now seen corresponding path program 1 times [2020-10-14 02:50:24,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:24,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814332910] [2020-10-14 02:50:24,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:25,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:25,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:50:25,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:25,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-10-14 02:50:25,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:25,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:25,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:50:25,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 02:50:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:25,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:25,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:25,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:25,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:25,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:25,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:50:25,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:25,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:25,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:25,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:25,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:25,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:50:25,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:25,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 02:50:25,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:25,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:50:25,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:50:25,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:50:25,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814332910] [2020-10-14 02:50:25,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:25,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:50:25,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036952564] [2020-10-14 02:50:25,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:50:25,618 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:25,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:50:25,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:50:25,619 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-14 02:50:34,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:34,517 INFO L93 Difference]: Finished difference Result 4672 states and 7649 transitions. [2020-10-14 02:50:34,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:50:34,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-14 02:50:34,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:34,546 INFO L225 Difference]: With dead ends: 4672 [2020-10-14 02:50:34,546 INFO L226 Difference]: Without dead ends: 3125 [2020-10-14 02:50:34,554 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 02:50:34,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-14 02:50:34,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3109. [2020-10-14 02:50:34,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-14 02:50:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4247 transitions. [2020-10-14 02:50:34,678 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4247 transitions. Word has length 94 [2020-10-14 02:50:34,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:34,679 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4247 transitions. [2020-10-14 02:50:34,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:50:34,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4247 transitions. [2020-10-14 02:50:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 02:50:34,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:34,691 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:34,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:50:34,692 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:34,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:34,692 INFO L82 PathProgramCache]: Analyzing trace with hash -994224550, now seen corresponding path program 1 times [2020-10-14 02:50:34,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:34,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773737641] [2020-10-14 02:50:34,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:34,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:35,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:35,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:35,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 02:50:35,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:50:35,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1169 [2020-10-14 02:50:35,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:35,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:50:35,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 02:50:35,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:50:35,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:35,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:35,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:35,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:50:35,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:35,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:35,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:35,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:36,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:36,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:36,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:36,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 02:50:36,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:36,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 02:50:36,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:36,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:50:36,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:36,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:50:36,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773737641] [2020-10-14 02:50:36,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:36,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:50:36,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969902722] [2020-10-14 02:50:36,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:50:36,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:36,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:50:36,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:50:36,199 INFO L87 Difference]: Start difference. First operand 3109 states and 4247 transitions. Second operand 5 states. [2020-10-14 02:50:45,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:45,260 INFO L93 Difference]: Finished difference Result 7784 states and 11134 transitions. [2020-10-14 02:50:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:50:45,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-14 02:50:45,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:45,300 INFO L225 Difference]: With dead ends: 7784 [2020-10-14 02:50:45,300 INFO L226 Difference]: Without dead ends: 4681 [2020-10-14 02:50:45,308 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 02:50:45,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-14 02:50:45,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4673. [2020-10-14 02:50:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4673 states. [2020-10-14 02:50:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4673 states to 4673 states and 6164 transitions. [2020-10-14 02:50:45,462 INFO L78 Accepts]: Start accepts. Automaton has 4673 states and 6164 transitions. Word has length 97 [2020-10-14 02:50:45,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:45,464 INFO L479 AbstractCegarLoop]: Abstraction has 4673 states and 6164 transitions. [2020-10-14 02:50:45,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:50:45,465 INFO L276 IsEmpty]: Start isEmpty. Operand 4673 states and 6164 transitions. [2020-10-14 02:50:45,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 02:50:45,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:45,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:45,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:50:45,479 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:45,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:45,479 INFO L82 PathProgramCache]: Analyzing trace with hash 440245546, now seen corresponding path program 1 times [2020-10-14 02:50:45,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:45,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760444869] [2020-10-14 02:50:45,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:45,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:46,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:46,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 02:50:46,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:50:46,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-10-14 02:50:46,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:46,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:46,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:46,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-14 02:50:46,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 02:50:46,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:46,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:46,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:46,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:46,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:46,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:50:46,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:46,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:46,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:46,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:46,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:46,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:46,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 02:50:46,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:46,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 02:50:46,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:46,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:46,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:46,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:46,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:50:46,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:50:46,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760444869] [2020-10-14 02:50:46,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:46,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:50:46,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798773745] [2020-10-14 02:50:46,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:50:46,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:46,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:50:46,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:50:46,746 INFO L87 Difference]: Start difference. First operand 4673 states and 6164 transitions. Second operand 5 states. [2020-10-14 02:50:57,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:50:57,053 INFO L93 Difference]: Finished difference Result 11679 states and 15857 transitions. [2020-10-14 02:50:57,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:50:57,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 02:50:57,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:50:57,093 INFO L225 Difference]: With dead ends: 11679 [2020-10-14 02:50:57,093 INFO L226 Difference]: Without dead ends: 7012 [2020-10-14 02:50:57,108 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 02:50:57,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7012 states. [2020-10-14 02:50:57,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7012 to 7004. [2020-10-14 02:50:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7004 states. [2020-10-14 02:50:57,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7004 states to 7004 states and 8918 transitions. [2020-10-14 02:50:57,274 INFO L78 Accepts]: Start accepts. Automaton has 7004 states and 8918 transitions. Word has length 137 [2020-10-14 02:50:57,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:50:57,276 INFO L479 AbstractCegarLoop]: Abstraction has 7004 states and 8918 transitions. [2020-10-14 02:50:57,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:50:57,276 INFO L276 IsEmpty]: Start isEmpty. Operand 7004 states and 8918 transitions. [2020-10-14 02:50:57,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-14 02:50:57,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:50:57,278 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:50:57,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:50:57,279 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:50:57,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:50:57,279 INFO L82 PathProgramCache]: Analyzing trace with hash 127103319, now seen corresponding path program 1 times [2020-10-14 02:50:57,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:50:57,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837751136] [2020-10-14 02:50:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:50:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:57,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:58,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:58,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 02:50:58,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:50:58,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-10-14 02:50:58,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:58,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:58,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:50:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 131 [2020-10-14 02:50:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 02:50:58,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:50:58,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:50:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:58,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:58,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:58,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:50:58,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:58,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:50:58,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:58,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:50:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:50:58,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:58,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:50:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:50:58,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:50:58,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:50:58,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 02:50:58,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:50:58,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 02:50:58,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:50:58,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:50:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:50:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:50:58,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 02:50:58,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:50:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:50:58,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837751136] [2020-10-14 02:50:58,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:50:58,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:50:58,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542847876] [2020-10-14 02:50:58,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:50:58,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:50:58,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:50:58,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:50:58,578 INFO L87 Difference]: Start difference. First operand 7004 states and 8918 transitions. Second operand 6 states. [2020-10-14 02:51:15,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:15,983 INFO L93 Difference]: Finished difference Result 16342 states and 21675 transitions. [2020-10-14 02:51:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:51:15,985 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-14 02:51:15,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:16,037 INFO L225 Difference]: With dead ends: 16342 [2020-10-14 02:51:16,037 INFO L226 Difference]: Without dead ends: 9344 [2020-10-14 02:51:16,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:51:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9344 states. [2020-10-14 02:51:16,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9344 to 9332. [2020-10-14 02:51:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9332 states. [2020-10-14 02:51:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9332 states to 9332 states and 11800 transitions. [2020-10-14 02:51:16,375 INFO L78 Accepts]: Start accepts. Automaton has 9332 states and 11800 transitions. Word has length 140 [2020-10-14 02:51:16,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:16,376 INFO L479 AbstractCegarLoop]: Abstraction has 9332 states and 11800 transitions. [2020-10-14 02:51:16,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:51:16,376 INFO L276 IsEmpty]: Start isEmpty. Operand 9332 states and 11800 transitions. [2020-10-14 02:51:16,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 02:51:16,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:16,384 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:51:16,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:51:16,385 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:16,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:16,385 INFO L82 PathProgramCache]: Analyzing trace with hash 894191762, now seen corresponding path program 1 times [2020-10-14 02:51:16,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:16,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306877857] [2020-10-14 02:51:16,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:16,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:16,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:18,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:20,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:20,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:20,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 02:51:20,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:51:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4082 [2020-10-14 02:51:20,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:20,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:51:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:51:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:20,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:20,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:20,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:20,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:20,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:20,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:51:20,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:20,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:20,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:20,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:20,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:20,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:20,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:20,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:20,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 02:51:20,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:20,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 02:51:20,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:20,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:20,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:20,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:51:20,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:20,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-14 02:51:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:20,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:20,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:20,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:51:20,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:20,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 02:51:20,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:20,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:20,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:20,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:51:20,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:51:20,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:51:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:51:21,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306877857] [2020-10-14 02:51:21,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:21,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:51:21,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966550501] [2020-10-14 02:51:21,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:51:21,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:21,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:51:21,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:51:21,034 INFO L87 Difference]: Start difference. First operand 9332 states and 11800 transitions. Second operand 7 states. [2020-10-14 02:51:45,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:51:45,134 INFO L93 Difference]: Finished difference Result 36963 states and 49819 transitions. [2020-10-14 02:51:45,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:51:45,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-10-14 02:51:45,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:51:45,282 INFO L225 Difference]: With dead ends: 36963 [2020-10-14 02:51:45,282 INFO L226 Difference]: Without dead ends: 27637 [2020-10-14 02:51:45,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:51:45,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27637 states. [2020-10-14 02:51:45,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27637 to 27485. [2020-10-14 02:51:45,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27485 states. [2020-10-14 02:51:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27485 states to 27485 states and 33311 transitions. [2020-10-14 02:51:46,065 INFO L78 Accepts]: Start accepts. Automaton has 27485 states and 33311 transitions. Word has length 207 [2020-10-14 02:51:46,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:51:46,066 INFO L479 AbstractCegarLoop]: Abstraction has 27485 states and 33311 transitions. [2020-10-14 02:51:46,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:51:46,066 INFO L276 IsEmpty]: Start isEmpty. Operand 27485 states and 33311 transitions. [2020-10-14 02:51:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 02:51:46,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:46,078 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:51:46,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:51:46,079 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:46,079 INFO L82 PathProgramCache]: Analyzing trace with hash -60453733, now seen corresponding path program 1 times [2020-10-14 02:51:46,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:46,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75833940] [2020-10-14 02:51:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:46,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:46,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:46,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:47,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:50,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:50,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:50,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 02:51:50,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:51:50,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4712 [2020-10-14 02:51:50,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:50,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:50,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:50,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:51:50,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:51:50,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:50,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:50,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:50,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:50,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:50,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:51:50,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:50,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:51:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:50,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:51:50,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:50,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:51:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:51,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:51,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:51,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:51:51,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 02:51:51,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:51,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:51,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:51:51,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:51,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:51:51,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:51,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:51,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:51,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:51:51,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:51,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-14 02:51:51,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:51,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:51:51,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:51:51,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:51:51,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:51:51,616 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:51:51,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75833940] [2020-10-14 02:51:51,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:51:51,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:51:51,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321472750] [2020-10-14 02:51:51,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:51:51,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:51,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:51:51,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:51:51,621 INFO L87 Difference]: Start difference. First operand 27485 states and 33311 transitions. Second operand 7 states. [2020-10-14 02:52:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:13,945 INFO L93 Difference]: Finished difference Result 63383 states and 78143 transitions. [2020-10-14 02:52:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:52:13,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-14 02:52:13,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:14,077 INFO L225 Difference]: With dead ends: 63383 [2020-10-14 02:52:14,078 INFO L226 Difference]: Without dead ends: 35904 [2020-10-14 02:52:14,151 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 02:52:14,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35904 states. [2020-10-14 02:52:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35904 to 35007. [2020-10-14 02:52:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35007 states. [2020-10-14 02:52:14,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35007 states to 35007 states and 40918 transitions. [2020-10-14 02:52:14,844 INFO L78 Accepts]: Start accepts. Automaton has 35007 states and 40918 transitions. Word has length 208 [2020-10-14 02:52:14,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:14,845 INFO L479 AbstractCegarLoop]: Abstraction has 35007 states and 40918 transitions. [2020-10-14 02:52:14,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:52:14,845 INFO L276 IsEmpty]: Start isEmpty. Operand 35007 states and 40918 transitions. [2020-10-14 02:52:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 02:52:14,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:14,854 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:52:14,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:52:14,854 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:14,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1559254326, now seen corresponding path program 1 times [2020-10-14 02:52:14,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:14,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39555961] [2020-10-14 02:52:14,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:14,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:15,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:16,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:16,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 02:52:16,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:52:16,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1325 [2020-10-14 02:52:16,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:16,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:16,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-14 02:52:16,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 02:52:16,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:16,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:16,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:16,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:16,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:16,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:16,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:52:16,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:16,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:16,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:16,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:16,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:16,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:16,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:16,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 02:52:16,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 02:52:16,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:16,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:16,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-14 02:52:16,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:52:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:52:16,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39555961] [2020-10-14 02:52:16,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:16,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:52:16,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070533963] [2020-10-14 02:52:16,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:52:16,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:16,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:52:16,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:52:16,893 INFO L87 Difference]: Start difference. First operand 35007 states and 40918 transitions. Second operand 5 states. [2020-10-14 02:52:33,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:33,433 INFO L93 Difference]: Finished difference Result 95869 states and 114070 transitions. [2020-10-14 02:52:33,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:52:33,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-14 02:52:33,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:33,686 INFO L225 Difference]: With dead ends: 95869 [2020-10-14 02:52:33,686 INFO L226 Difference]: Without dead ends: 61650 [2020-10-14 02:52:33,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:52:33,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61650 states. [2020-10-14 02:52:34,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61650 to 57793. [2020-10-14 02:52:34,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57793 states. [2020-10-14 02:52:34,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57793 states to 57793 states and 68438 transitions. [2020-10-14 02:52:35,000 INFO L78 Accepts]: Start accepts. Automaton has 57793 states and 68438 transitions. Word has length 217 [2020-10-14 02:52:35,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:35,001 INFO L479 AbstractCegarLoop]: Abstraction has 57793 states and 68438 transitions. [2020-10-14 02:52:35,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:52:35,001 INFO L276 IsEmpty]: Start isEmpty. Operand 57793 states and 68438 transitions. [2020-10-14 02:52:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 02:52:35,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:35,013 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:52:35,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:52:35,013 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:35,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:35,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1006538421, now seen corresponding path program 1 times [2020-10-14 02:52:35,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:35,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397377351] [2020-10-14 02:52:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:35,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:35,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:35,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:40,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:40,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:40,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 02:52:40,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:52:40,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-14 02:52:40,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:40,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:40,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:40,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-14 02:52:40,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:52:40,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:52:40,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:40,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:40,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:40,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:40,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:52:40,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:40,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:40,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:40,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:40,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:40,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:40,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:40,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:40,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:40,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 02:52:40,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:40,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 02:52:40,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:40,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:40,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 02:52:40,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:40,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-14 02:52:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:40,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:40,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:40,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:52:40,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 02:52:40,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:40,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:52:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:52:40,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:52:40,722 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:52:40,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397377351] [2020-10-14 02:52:40,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:40,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:52:40,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118248824] [2020-10-14 02:52:40,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:52:40,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:40,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:52:40,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:52:40,739 INFO L87 Difference]: Start difference. First operand 57793 states and 68438 transitions. Second operand 7 states. [2020-10-14 02:52:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:59,415 INFO L93 Difference]: Finished difference Result 140175 states and 170132 transitions. [2020-10-14 02:52:59,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:52:59,418 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-14 02:52:59,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:59,721 INFO L225 Difference]: With dead ends: 140175 [2020-10-14 02:52:59,722 INFO L226 Difference]: Without dead ends: 74466 [2020-10-14 02:52:59,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:52:59,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74466 states. [2020-10-14 02:53:01,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74466 to 74241. [2020-10-14 02:53:01,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74241 states. [2020-10-14 02:53:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74241 states to 74241 states and 84921 transitions. [2020-10-14 02:53:01,615 INFO L78 Accepts]: Start accepts. Automaton has 74241 states and 84921 transitions. Word has length 232 [2020-10-14 02:53:01,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:01,616 INFO L479 AbstractCegarLoop]: Abstraction has 74241 states and 84921 transitions. [2020-10-14 02:53:01,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:53:01,616 INFO L276 IsEmpty]: Start isEmpty. Operand 74241 states and 84921 transitions. [2020-10-14 02:53:01,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-14 02:53:01,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:01,647 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:53:01,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:53:01,648 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:01,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:01,648 INFO L82 PathProgramCache]: Analyzing trace with hash 987764678, now seen corresponding path program 1 times [2020-10-14 02:53:01,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:01,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11981636] [2020-10-14 02:53:01,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:01,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:02,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:04,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:05,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:05,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-14 02:53:05,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:53:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4032 [2020-10-14 02:53:05,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:05,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 02:53:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:53:05,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:53:05,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:05,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:05,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:05,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:05,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:05,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:53:05,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:05,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:05,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:05,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:05,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:06,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:06,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:53:06,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:06,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 02:53:06,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:06,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:06,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 02:53:06,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:53:06,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-14 02:53:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:06,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:06,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:06,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 02:53:06,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:06,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 02:53:06,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:06,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:53:06,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 02:53:06,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:06,375 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:53:06,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11981636] [2020-10-14 02:53:06,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:06,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:53:06,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251326577] [2020-10-14 02:53:06,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:53:06,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:06,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:53:06,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:53:06,377 INFO L87 Difference]: Start difference. First operand 74241 states and 84921 transitions. Second operand 8 states. [2020-10-14 02:53:10,476 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-14 02:53:27,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:27,149 INFO L93 Difference]: Finished difference Result 147949 states and 169395 transitions. [2020-10-14 02:53:27,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 02:53:27,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 281 [2020-10-14 02:53:27,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:27,339 INFO L225 Difference]: With dead ends: 147949 [2020-10-14 02:53:27,339 INFO L226 Difference]: Without dead ends: 72162 [2020-10-14 02:53:27,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 02:53:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72162 states. [2020-10-14 02:53:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72162 to 70585. [2020-10-14 02:53:28,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70585 states. [2020-10-14 02:53:28,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70585 states to 70585 states and 76521 transitions. [2020-10-14 02:53:28,330 INFO L78 Accepts]: Start accepts. Automaton has 70585 states and 76521 transitions. Word has length 281 [2020-10-14 02:53:28,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:28,331 INFO L479 AbstractCegarLoop]: Abstraction has 70585 states and 76521 transitions. [2020-10-14 02:53:28,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:53:28,331 INFO L276 IsEmpty]: Start isEmpty. Operand 70585 states and 76521 transitions. [2020-10-14 02:53:28,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-14 02:53:28,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:28,348 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:53:28,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 02:53:28,349 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:28,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:28,349 INFO L82 PathProgramCache]: Analyzing trace with hash 252070374, now seen corresponding path program 1 times [2020-10-14 02:53:28,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:28,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1671385551] [2020-10-14 02:53:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:28,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:28,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:29,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:29,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:30,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:33,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:33,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 391 [2020-10-14 02:53:33,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:53:33,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 02:53:33,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:33,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-14 02:53:33,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 02:53:33,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:33,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:33,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:33,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:33,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:33,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:33,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:53:33,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:33,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:33,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:33,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:53:33,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:33,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:33,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:33,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 02:53:33,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:33,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 02:53:33,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:33,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:33,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 02:53:33,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:33,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-14 02:53:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:34,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:34,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:53:34,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:34,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 02:53:34,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:34,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:34,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:34,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:53:34,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 02:53:34,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:53:34,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-14 02:53:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:34,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:34,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:34,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:53:34,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:34,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 02:53:34,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:34,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-14 02:53:34,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:34,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:53:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 120 proven. 122 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-14 02:53:34,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1671385551] [2020-10-14 02:53:34,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:34,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:53:34,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122237281] [2020-10-14 02:53:34,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:53:34,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:34,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:53:34,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:53:34,354 INFO L87 Difference]: Start difference. First operand 70585 states and 76521 transitions. Second operand 7 states.