/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/Problem18_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:43:13,131 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:43:13,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:43:13,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:43:13,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:43:13,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:43:13,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:43:13,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:43:13,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:43:13,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:43:13,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:43:13,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:43:13,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:43:13,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:43:13,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:43:13,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:43:13,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:43:13,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:43:13,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:43:13,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:43:13,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:43:13,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:43:13,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:43:13,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:43:13,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:43:13,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:43:13,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:43:13,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:43:13,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:43:13,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:43:13,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:43:13,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:43:13,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:43:13,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:43:13,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:43:13,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:43:13,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:43:13,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:43:13,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:43:13,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:43:13,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:43:13,238 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 22:43:13,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:43:13,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:43:13,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:43:13,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:43:13,265 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:43:13,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:43:13,265 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:43:13,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:43:13,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:43:13,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:43:13,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:43:13,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:43:13,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:43:13,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:43:13,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:43:13,267 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:43:13,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:43:13,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:43:13,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:43:13,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:43:13,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:43:13,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:43:13,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:43:13,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:43:13,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:43:13,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:43:13,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:43:13,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:43:13,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:43:13,270 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:43:13,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:43:13,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:43:13,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:43:13,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:43:13,627 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:43:13,628 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label15.c [2020-10-14 22:43:13,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4e8bbf21/928d830f500c496bb6bda09fc7438968/FLAG01ca9ae55 [2020-10-14 22:43:14,526 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:43:14,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label15.c [2020-10-14 22:43:14,557 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4e8bbf21/928d830f500c496bb6bda09fc7438968/FLAG01ca9ae55 [2020-10-14 22:43:14,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4e8bbf21/928d830f500c496bb6bda09fc7438968 [2020-10-14 22:43:14,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:43:14,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:43:14,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:43:14,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:43:14,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:43:14,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:43:14" (1/1) ... [2020-10-14 22:43:14,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424d9305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:14, skipping insertion in model container [2020-10-14 22:43:14,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:43:14" (1/1) ... [2020-10-14 22:43:14,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:43:14,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:43:16,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:43:16,119 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:43:16,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:43:16,602 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:43:16,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:16 WrapperNode [2020-10-14 22:43:16,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:43:16,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:43:16,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:43:16,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:43:16,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:16" (1/1) ... [2020-10-14 22:43:16,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:16" (1/1) ... [2020-10-14 22:43:16,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:16" (1/1) ... [2020-10-14 22:43:16,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:16" (1/1) ... [2020-10-14 22:43:16,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:16" (1/1) ... [2020-10-14 22:43:16,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:16" (1/1) ... [2020-10-14 22:43:16,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:16" (1/1) ... [2020-10-14 22:43:16,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:43:16,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:43:16,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:43:16,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:43:16,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:16" (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 22:43:16,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:43:16,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:43:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:43:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:43:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 22:43:16,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:43:16,998 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:43:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:43:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 22:43:16,999 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:43:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:43:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:43:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:43:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:43:17,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:43:22,890 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:43:22,890 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:43:22,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:43:22 BoogieIcfgContainer [2020-10-14 22:43:22,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:43:22,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:43:22,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:43:22,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:43:22,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:43:14" (1/3) ... [2020-10-14 22:43:22,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98039fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:43:22, skipping insertion in model container [2020-10-14 22:43:22,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:43:16" (2/3) ... [2020-10-14 22:43:22,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98039fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:43:22, skipping insertion in model container [2020-10-14 22:43:22,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:43:22" (3/3) ... [2020-10-14 22:43:22,916 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label15.c [2020-10-14 22:43:22,928 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:43:22,938 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:43:22,955 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:43:22,986 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:43:22,986 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:43:22,987 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:43:22,987 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:43:22,987 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:43:22,987 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:43:22,987 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:43:22,988 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:43:23,025 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2020-10-14 22:43:23,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 22:43:23,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:43:23,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:43:23,036 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:43:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:43:23,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1584923938, now seen corresponding path program 1 times [2020-10-14 22:43:23,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:43:23,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305635641] [2020-10-14 22:43:23,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:43:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:23,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:23,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:23,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 22:43:23,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:43:23,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-14 22:43:23,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:23,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:43:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:43:23,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 22:43:23,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 22:43:23,899 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-14 22:43:23,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:43:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:23,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:23,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:23,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:43:23,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:43:23,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:43:23,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:23,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:43:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:43:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:43:23,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:43:23,933 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 22:43:23,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305635641] [2020-10-14 22:43:23,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:43:23,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:43:23,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811477062] [2020-10-14 22:43:23,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:43:23,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:43:23,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:43:23,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:43:23,960 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 4 states. [2020-10-14 22:43:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:43:34,262 INFO L93 Difference]: Finished difference Result 2286 states and 4364 transitions. [2020-10-14 22:43:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:43:34,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 22:43:34,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:43:34,296 INFO L225 Difference]: With dead ends: 2286 [2020-10-14 22:43:34,297 INFO L226 Difference]: Without dead ends: 1432 [2020-10-14 22:43:34,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:43:34,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2020-10-14 22:43:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1428. [2020-10-14 22:43:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1428 states. [2020-10-14 22:43:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2262 transitions. [2020-10-14 22:43:34,498 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2262 transitions. Word has length 41 [2020-10-14 22:43:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:43:34,500 INFO L479 AbstractCegarLoop]: Abstraction has 1428 states and 2262 transitions. [2020-10-14 22:43:34,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:43:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2262 transitions. [2020-10-14 22:43:34,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-14 22:43:34,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:43:34,510 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:34,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:43:34,512 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:43:34,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:43:34,513 INFO L82 PathProgramCache]: Analyzing trace with hash 898324231, now seen corresponding path program 1 times [2020-10-14 22:43:34,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:43:34,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461447850] [2020-10-14 22:43:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:43:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:34,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:34,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:35,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:35,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 22:43:35,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:43:35,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 803 [2020-10-14 22:43:35,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:35,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:43:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:43:35,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:43:35,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:43:35,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:43:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:35,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:35,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:35,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:43:35,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:43:35,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:43:35,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:35,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:35,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:43:35,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:43:35,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:43:35,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:43:35,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:43:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:35,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:35,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:43:35,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:43:35,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 22:43:35,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:35,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:43:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:43:35,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:43:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:43:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:43:35,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461447850] [2020-10-14 22:43:35,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:43:35,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:43:35,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142205336] [2020-10-14 22:43:35,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:43:35,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:43:35,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:43:35,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:43:35,643 INFO L87 Difference]: Start difference. First operand 1428 states and 2262 transitions. Second operand 7 states. [2020-10-14 22:43:47,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:43:47,481 INFO L93 Difference]: Finished difference Result 4367 states and 6947 transitions. [2020-10-14 22:43:47,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:43:47,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-10-14 22:43:47,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:43:47,503 INFO L225 Difference]: With dead ends: 4367 [2020-10-14 22:43:47,504 INFO L226 Difference]: Without dead ends: 2945 [2020-10-14 22:43:47,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:43:47,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2945 states. [2020-10-14 22:43:47,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2945 to 2894. [2020-10-14 22:43:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2894 states. [2020-10-14 22:43:47,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2894 states to 2894 states and 3902 transitions. [2020-10-14 22:43:47,626 INFO L78 Accepts]: Start accepts. Automaton has 2894 states and 3902 transitions. Word has length 110 [2020-10-14 22:43:47,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:43:47,627 INFO L479 AbstractCegarLoop]: Abstraction has 2894 states and 3902 transitions. [2020-10-14 22:43:47,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:43:47,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2894 states and 3902 transitions. [2020-10-14 22:43:47,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 22:43:47,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:43:47,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:43:47,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:43:47,634 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:43:47,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:43:47,635 INFO L82 PathProgramCache]: Analyzing trace with hash -2103811493, now seen corresponding path program 1 times [2020-10-14 22:43:47,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:43:47,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548717979] [2020-10-14 22:43:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:43:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:47,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:48,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:51,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:51,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:43:51,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:43:51,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3476 [2020-10-14 22:43:51,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:51,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:43:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:43:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 22:43:51,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:43:51,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:43:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:51,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:51,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:51,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:43:51,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:43:51,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:43:51,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:51,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:43:51,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:43:51,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:43:51,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:43:51,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:43:51,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:51,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:51,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:51,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:43:51,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:43:51,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-14 22:43:51,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:51,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:43:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:43:51,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 22:43:51,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:43:51,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-14 22:43:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:43:51,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:43:51,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:43:51,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:43:51,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:43:51,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 22:43:51,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:43:51,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:43:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:43:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 22:43:51,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:43:51,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:43:51,988 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 68 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:43:51,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548717979] [2020-10-14 22:43:51,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:43:51,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:43:51,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407053501] [2020-10-14 22:43:51,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:43:51,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:43:51,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:43:51,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:43:51,994 INFO L87 Difference]: Start difference. First operand 2894 states and 3902 transitions. Second operand 7 states. [2020-10-14 22:44:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:44:04,528 INFO L93 Difference]: Finished difference Result 6650 states and 8741 transitions. [2020-10-14 22:44:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:44:04,529 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-14 22:44:04,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:44:04,551 INFO L225 Difference]: With dead ends: 6650 [2020-10-14 22:44:04,551 INFO L226 Difference]: Without dead ends: 3762 [2020-10-14 22:44:04,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:44:04,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2020-10-14 22:44:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3628. [2020-10-14 22:44:04,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3628 states. [2020-10-14 22:44:04,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 4660 transitions. [2020-10-14 22:44:04,707 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 4660 transitions. Word has length 232 [2020-10-14 22:44:04,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:44:04,708 INFO L479 AbstractCegarLoop]: Abstraction has 3628 states and 4660 transitions. [2020-10-14 22:44:04,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:44:04,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 4660 transitions. [2020-10-14 22:44:04,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-14 22:44:04,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:44:04,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:04,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:44:04,716 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:44:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:44:04,717 INFO L82 PathProgramCache]: Analyzing trace with hash -9692651, now seen corresponding path program 1 times [2020-10-14 22:44:04,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:44:04,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [212007239] [2020-10-14 22:44:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:44:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:04,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:04,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:08,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:08,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-14 22:44:08,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:44:08,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3448 [2020-10-14 22:44:08,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:08,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:44:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:44:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-14 22:44:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:08,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:44:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:08,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:08,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:44:08,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:08,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:44:08,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:08,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:44:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:08,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:44:08,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:08,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:44:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:08,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:09,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:09,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:44:09,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:09,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-14 22:44:09,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:09,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:09,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:44:09,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:44:09,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-14 22:44:09,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:44:09,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:44:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:09,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:09,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:09,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:44:09,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:09,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 22:44:09,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:09,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:09,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:44:09,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:44:09,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 22:44:09,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:09,906 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:44:09,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [212007239] [2020-10-14 22:44:09,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:44:09,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 22:44:09,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425786544] [2020-10-14 22:44:09,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:44:09,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:44:09,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:44:09,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:44:09,911 INFO L87 Difference]: Start difference. First operand 3628 states and 4660 transitions. Second operand 9 states. [2020-10-14 22:44:23,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:44:23,605 INFO L93 Difference]: Finished difference Result 10409 states and 13782 transitions. [2020-10-14 22:44:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:44:23,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 348 [2020-10-14 22:44:23,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:44:23,660 INFO L225 Difference]: With dead ends: 10409 [2020-10-14 22:44:23,660 INFO L226 Difference]: Without dead ends: 7489 [2020-10-14 22:44:23,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:44:23,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2020-10-14 22:44:23,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 7401. [2020-10-14 22:44:23,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7401 states. [2020-10-14 22:44:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7401 states to 7401 states and 9246 transitions. [2020-10-14 22:44:23,856 INFO L78 Accepts]: Start accepts. Automaton has 7401 states and 9246 transitions. Word has length 348 [2020-10-14 22:44:23,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:44:23,859 INFO L479 AbstractCegarLoop]: Abstraction has 7401 states and 9246 transitions. [2020-10-14 22:44:23,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:44:23,859 INFO L276 IsEmpty]: Start isEmpty. Operand 7401 states and 9246 transitions. [2020-10-14 22:44:23,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-14 22:44:23,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:44:23,870 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:23,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:44:23,870 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:44:23,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:44:23,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1361541167, now seen corresponding path program 1 times [2020-10-14 22:44:23,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:44:23,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228963739] [2020-10-14 22:44:23,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:44:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:24,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:24,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:25,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:27,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:27,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 432 [2020-10-14 22:44:27,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:44:27,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3917 [2020-10-14 22:44:27,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:27,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:27,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:44:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-14 22:44:27,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 22:44:27,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:27,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:44:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:27,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:27,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:27,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:44:27,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:27,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:44:27,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:27,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:44:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:27,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:44:27,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:27,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:44:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:28,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:28,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:28,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 22:44:28,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:28,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 22:44:28,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:28,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:44:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:28,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-14 22:44:28,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:28,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-14 22:44:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:28,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:28,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:28,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:44:28,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:28,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 22:44:28,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:28,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:28,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:44:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:44:28,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 22:44:28,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:28,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-14 22:44:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:28,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:28,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:28,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:44:28,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:28,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 22:44:28,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:28,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:44:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 22:44:28,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:44:28,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 225 proven. 68 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 22:44:28,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228963739] [2020-10-14 22:44:28,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:44:28,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:44:28,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747946297] [2020-10-14 22:44:28,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:44:28,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:44:28,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:44:28,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:44:28,893 INFO L87 Difference]: Start difference. First operand 7401 states and 9246 transitions. Second operand 7 states. [2020-10-14 22:44:41,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:44:41,791 INFO L93 Difference]: Finished difference Result 16530 states and 21110 transitions. [2020-10-14 22:44:41,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:44:41,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 418 [2020-10-14 22:44:41,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:44:41,827 INFO L225 Difference]: With dead ends: 16530 [2020-10-14 22:44:41,827 INFO L226 Difference]: Without dead ends: 8909 [2020-10-14 22:44:41,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:44:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8909 states. [2020-10-14 22:44:41,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8909 to 8790. [2020-10-14 22:44:41,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8790 states. [2020-10-14 22:44:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8790 states to 8790 states and 9811 transitions. [2020-10-14 22:44:42,013 INFO L78 Accepts]: Start accepts. Automaton has 8790 states and 9811 transitions. Word has length 418 [2020-10-14 22:44:42,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:44:42,014 INFO L479 AbstractCegarLoop]: Abstraction has 8790 states and 9811 transitions. [2020-10-14 22:44:42,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:44:42,014 INFO L276 IsEmpty]: Start isEmpty. Operand 8790 states and 9811 transitions. [2020-10-14 22:44:42,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2020-10-14 22:44:42,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:44:42,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:42,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:44:42,041 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:44:42,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:44:42,042 INFO L82 PathProgramCache]: Analyzing trace with hash 831355052, now seen corresponding path program 1 times [2020-10-14 22:44:42,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:44:42,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563669240] [2020-10-14 22:44:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:44:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:42,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:45,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:47,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:47,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 893 [2020-10-14 22:44:47,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:44:47,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5182 [2020-10-14 22:44:47,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:47,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 22:44:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:44:47,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 887 [2020-10-14 22:44:47,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:47,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:44:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:47,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:47,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:47,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:44:47,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:47,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:44:47,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:47,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:44:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:47,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:44:47,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:44:47,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:44:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:47,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:48,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:49,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:49,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:44:49,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:44:49,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1291 [2020-10-14 22:44:49,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:49,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:44:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:49,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 520 [2020-10-14 22:44:49,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:49,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:44:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:49,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:49,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:49,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:44:49,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 22:44:49,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:49,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:44:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-14 22:44:49,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:44:49,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:44:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:49,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:49,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:49,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:44:49,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:49,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 22:44:49,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:49,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:44:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 22:44:49,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:49,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:44:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:49,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:49,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:49,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:44:49,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:44:49,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-14 22:44:49,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:49,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:44:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:49,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 22:44:49,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:44:50,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:44:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:44:50,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:44:50,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:44:50,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:44:50,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:44:50,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 22:44:50,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:44:50,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:44:50,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:44:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:44:50,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 22:44:50,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:44:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2020-10-14 22:44:50,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563669240] [2020-10-14 22:44:50,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:44:50,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:44:50,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737835040] [2020-10-14 22:44:50,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 22:44:50,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:44:50,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 22:44:50,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:44:50,380 INFO L87 Difference]: Start difference. First operand 8790 states and 9811 transitions. Second operand 6 states. [2020-10-14 22:44:59,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:44:59,481 INFO L93 Difference]: Finished difference Result 25521 states and 30103 transitions. [2020-10-14 22:44:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 22:44:59,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 875 [2020-10-14 22:44:59,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:44:59,556 INFO L225 Difference]: With dead ends: 25521 [2020-10-14 22:44:59,557 INFO L226 Difference]: Without dead ends: 18149 [2020-10-14 22:44:59,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:44:59,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18149 states. [2020-10-14 22:44:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18149 to 15313. [2020-10-14 22:44:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15313 states. [2020-10-14 22:44:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15313 states to 15313 states and 17846 transitions. [2020-10-14 22:44:59,954 INFO L78 Accepts]: Start accepts. Automaton has 15313 states and 17846 transitions. Word has length 875 [2020-10-14 22:44:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:44:59,957 INFO L479 AbstractCegarLoop]: Abstraction has 15313 states and 17846 transitions. [2020-10-14 22:44:59,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 22:44:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 15313 states and 17846 transitions. [2020-10-14 22:44:59,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-14 22:44:59,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:44:59,978 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:59,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:44:59,978 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:44:59,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:44:59,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1852201048, now seen corresponding path program 1 times [2020-10-14 22:44:59,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:44:59,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135652575] [2020-10-14 22:44:59,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:45:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:00,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:03,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:03,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1017 [2020-10-14 22:45:03,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:45:03,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2877 [2020-10-14 22:45:03,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:03,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:45:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-14 22:45:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 22:45:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:03,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:45:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:03,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:03,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:03,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:45:03,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:03,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:45:03,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:03,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:03,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:03,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:03,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:45:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:03,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:03,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:03,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:45:03,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:03,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 22:45:03,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:03,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:03,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:03,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:03,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:03,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:03,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:45:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:03,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:03,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:03,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:45:03,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:03,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 22:45:03,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:03,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:03,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:03,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:03,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:45:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:03,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:45:03,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:45:03,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:03,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:45:03,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:45:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:03,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:03,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:03,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:45:03,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:03,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 22:45:03,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:03,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 22:45:03,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:03,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:45:03,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:03,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:03,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:03,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:45:03,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:03,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:45:03,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:03,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:03,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:03,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:03,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 22:45:03,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:03,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:45:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:03,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:04,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:04,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:45:04,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:04,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 22:45:04,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:04,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:45:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:45:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 22:45:04,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 348 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-14 22:45:04,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135652575] [2020-10-14 22:45:04,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:45:04,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:45:04,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164641210] [2020-10-14 22:45:04,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:45:04,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:45:04,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:45:04,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:45:04,713 INFO L87 Difference]: Start difference. First operand 15313 states and 17846 transitions. Second operand 7 states. [2020-10-14 22:45:16,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:45:16,664 INFO L93 Difference]: Finished difference Result 36721 states and 44651 transitions. [2020-10-14 22:45:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:45:16,669 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 997 [2020-10-14 22:45:16,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:45:16,752 INFO L225 Difference]: With dead ends: 36721 [2020-10-14 22:45:16,753 INFO L226 Difference]: Without dead ends: 22826 [2020-10-14 22:45:16,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:45:16,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22826 states. [2020-10-14 22:45:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22826 to 21981. [2020-10-14 22:45:17,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21981 states. [2020-10-14 22:45:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21981 states to 21981 states and 25622 transitions. [2020-10-14 22:45:17,272 INFO L78 Accepts]: Start accepts. Automaton has 21981 states and 25622 transitions. Word has length 997 [2020-10-14 22:45:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:45:17,274 INFO L479 AbstractCegarLoop]: Abstraction has 21981 states and 25622 transitions. [2020-10-14 22:45:17,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:45:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 21981 states and 25622 transitions. [2020-10-14 22:45:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2020-10-14 22:45:17,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:45:17,295 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:17,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:45:17,296 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:45:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:45:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash -836794195, now seen corresponding path program 1 times [2020-10-14 22:45:17,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:45:17,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714512044] [2020-10-14 22:45:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:45:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:18,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:18,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:22,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:22,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1020 [2020-10-14 22:45:22,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:45:22,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 22:45:22,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:22,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:22,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 22:45:22,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:45:22,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 975 [2020-10-14 22:45:22,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:22,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:45:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:22,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:22,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:22,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:45:22,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:22,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:45:22,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:22,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:22,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:45:22,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:22,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:45:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:22,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:23,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:23,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:45:23,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:45:23,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-10-14 22:45:23,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:23,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:23,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:23,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:23,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 520 [2020-10-14 22:45:23,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:23,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:45:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:23,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:23,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:23,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:45:23,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:23,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 22:45:23,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:23,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:23,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:23,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:23,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-14 22:45:23,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:24,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:45:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:24,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:24,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:45:24,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:24,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:45:24,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:24,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:24,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 22:45:24,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:24,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:45:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:24,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:24,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:24,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:24,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:45:24,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:45:24,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 404 [2020-10-14 22:45:24,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:24,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 22:45:24,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:24,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:45:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:24,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:24,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:24,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:45:24,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:24,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 22:45:24,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:24,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:24,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 22:45:24,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:24,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:45:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:24,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:24,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:24,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 22:45:24,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:24,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 22:45:24,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:24,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:45:24,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:45:24,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 22:45:24,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 340 proven. 4 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-10-14 22:45:25,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714512044] [2020-10-14 22:45:25,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:45:25,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:45:25,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526801879] [2020-10-14 22:45:25,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:45:25,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:45:25,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:45:25,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:45:25,351 INFO L87 Difference]: Start difference. First operand 21981 states and 25622 transitions. Second operand 7 states. [2020-10-14 22:45:32,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:45:32,638 INFO L93 Difference]: Finished difference Result 49381 states and 61499 transitions. [2020-10-14 22:45:32,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:45:32,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1000 [2020-10-14 22:45:32,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:45:32,745 INFO L225 Difference]: With dead ends: 49381 [2020-10-14 22:45:32,745 INFO L226 Difference]: Without dead ends: 28818 [2020-10-14 22:45:32,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:45:32,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28818 states. [2020-10-14 22:45:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28818 to 28411. [2020-10-14 22:45:33,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28411 states. [2020-10-14 22:45:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28411 states to 28411 states and 32593 transitions. [2020-10-14 22:45:33,449 INFO L78 Accepts]: Start accepts. Automaton has 28411 states and 32593 transitions. Word has length 1000 [2020-10-14 22:45:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:45:33,451 INFO L479 AbstractCegarLoop]: Abstraction has 28411 states and 32593 transitions. [2020-10-14 22:45:33,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:45:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 28411 states and 32593 transitions. [2020-10-14 22:45:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1074 [2020-10-14 22:45:33,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:45:33,468 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:33,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:45:33,469 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:45:33,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:45:33,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1244455992, now seen corresponding path program 1 times [2020-10-14 22:45:33,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:45:33,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [643689957] [2020-10-14 22:45:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:45:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:33,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:33,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:38,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:38,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1095 [2020-10-14 22:45:38,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:45:38,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 22:45:38,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:38,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:45:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-14 22:45:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 22:45:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:38,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:45:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:38,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:38,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:38,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:45:38,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:38,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:45:38,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:38,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:38,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:38,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:38,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:38,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:45:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:38,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:38,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:45:38,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 22:45:38,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:38,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:38,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:38,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:45:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:39,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:39,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:39,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:45:39,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 22:45:39,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:39,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:39,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:39,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:39,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:39,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:45:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:39,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:39,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:39,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:45:39,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:39,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:45:39,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:39,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:39,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:39,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:39,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:39,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:45:39,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:45:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:39,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:39,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:39,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:45:39,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:45:39,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:39,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:39,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:39,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:45:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:39,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:39,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:39,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:45:39,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:45:39,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:39,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:39,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:39,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:39,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:45:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:39,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:39,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:39,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:45:39,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:39,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 22:45:39,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:39,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:39,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 22:45:39,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:39,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-14 22:45:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:39,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:39,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:39,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:45:39,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:39,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 22:45:39,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:39,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:45:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:45:39,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 22:45:39,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 457 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-14 22:45:40,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [643689957] [2020-10-14 22:45:40,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:45:40,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:45:40,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682937431] [2020-10-14 22:45:40,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:45:40,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:45:40,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:45:40,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:45:40,311 INFO L87 Difference]: Start difference. First operand 28411 states and 32593 transitions. Second operand 7 states. [2020-10-14 22:45:48,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:45:48,702 INFO L93 Difference]: Finished difference Result 59801 states and 68705 transitions. [2020-10-14 22:45:48,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:45:48,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1073 [2020-10-14 22:45:48,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:45:48,781 INFO L225 Difference]: With dead ends: 59801 [2020-10-14 22:45:48,782 INFO L226 Difference]: Without dead ends: 32808 [2020-10-14 22:45:48,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:45:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32808 states. [2020-10-14 22:45:49,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32808 to 32730. [2020-10-14 22:45:49,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32730 states. [2020-10-14 22:45:49,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32730 states to 32730 states and 37178 transitions. [2020-10-14 22:45:49,329 INFO L78 Accepts]: Start accepts. Automaton has 32730 states and 37178 transitions. Word has length 1073 [2020-10-14 22:45:49,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:45:49,330 INFO L479 AbstractCegarLoop]: Abstraction has 32730 states and 37178 transitions. [2020-10-14 22:45:49,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:45:49,331 INFO L276 IsEmpty]: Start isEmpty. Operand 32730 states and 37178 transitions. [2020-10-14 22:45:49,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2020-10-14 22:45:49,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:45:49,349 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:45:49,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:45:49,349 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:45:49,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:45:49,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1666512541, now seen corresponding path program 1 times [2020-10-14 22:45:49,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:45:49,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056863286] [2020-10-14 22:45:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:45:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:49,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:49,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:52,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:52,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1162 [2020-10-14 22:45:52,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:45:52,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3018 [2020-10-14 22:45:52,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:52,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:45:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-14 22:45:52,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 22:45:52,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:52,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:45:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:52,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:52,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:45:52,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:52,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:45:52,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:52,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:52,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:52,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:52,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:45:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:52,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:52,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:52,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:45:52,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:52,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:45:52,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:52,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:52,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:52,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:52,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:52,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:52,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:45:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:52,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:52,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:52,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:45:52,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:52,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:45:52,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:52,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:52,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:52,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:53,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:45:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:53,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:53,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:53,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:45:53,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:53,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:45:53,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:53,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:53,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:53,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:45:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:53,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:53,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:53,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:45:53,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:53,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-14 22:45:53,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:53,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:53,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:53,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:53,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:53,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:53,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:45:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:53,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:53,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:45:53,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:53,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:45:53,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:53,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:45:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:53,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:45:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:53,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:45:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:53,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:53,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:53,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 22:45:53,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:53,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 22:45:53,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:53,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:45:53,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:45:53,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 22:45:53,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:53,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-14 22:45:53,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:45:53,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:45:53,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:45:53,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:45:53,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:45:53,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 22:45:53,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:45:53,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:45:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:45:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:45:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 22:45:53,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:45:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 503 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-14 22:45:54,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056863286] [2020-10-14 22:45:54,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:45:54,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:45:54,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375343738] [2020-10-14 22:45:54,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:45:54,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:45:54,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:45:54,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:45:54,307 INFO L87 Difference]: Start difference. First operand 32730 states and 37178 transitions. Second operand 7 states. [2020-10-14 22:46:03,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:46:03,026 INFO L93 Difference]: Finished difference Result 67675 states and 77119 transitions. [2020-10-14 22:46:03,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:46:03,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1140 [2020-10-14 22:46:03,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:46:03,109 INFO L225 Difference]: With dead ends: 67675 [2020-10-14 22:46:03,109 INFO L226 Difference]: Without dead ends: 36363 [2020-10-14 22:46:03,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:46:03,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36363 states. [2020-10-14 22:46:03,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36363 to 36273. [2020-10-14 22:46:03,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36273 states. [2020-10-14 22:46:03,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36273 states to 36273 states and 41063 transitions. [2020-10-14 22:46:03,660 INFO L78 Accepts]: Start accepts. Automaton has 36273 states and 41063 transitions. Word has length 1140 [2020-10-14 22:46:03,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:46:03,661 INFO L479 AbstractCegarLoop]: Abstraction has 36273 states and 41063 transitions. [2020-10-14 22:46:03,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:46:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand 36273 states and 41063 transitions. [2020-10-14 22:46:03,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1234 [2020-10-14 22:46:03,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:46:03,685 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:03,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:46:03,686 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:46:03,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:46:03,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1857142428, now seen corresponding path program 1 times [2020-10-14 22:46:03,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:46:03,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414626693] [2020-10-14 22:46:03,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:46:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:04,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:04,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:06,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:09,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:09,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1257 [2020-10-14 22:46:09,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:46:09,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-14 22:46:09,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:09,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:46:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1089 [2020-10-14 22:46:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 22:46:09,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:09,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:46:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:09,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:09,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:09,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:46:09,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:46:09,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:09,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:09,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:09,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:09,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:46:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:09,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:09,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:09,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:46:09,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 22:46:09,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:09,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:09,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:46:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:09,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:09,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:09,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:46:09,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:09,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:46:09,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:09,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:09,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:09,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:09,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:46:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:09,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:09,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:09,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:46:09,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:09,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:46:09,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:09,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:09,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:09,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:09,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:09,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:09,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:46:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:09,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:09,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:09,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:46:09,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:09,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 22:46:09,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:09,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:09,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:09,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:46:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:09,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:09,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:09,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:46:09,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:09,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 22:46:09,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:09,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:09,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:09,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:09,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:46:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:09,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:09,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:09,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 22:46:09,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:09,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:46:09,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:09,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:09,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:09,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:09,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:09,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:09,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-14 22:46:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:09,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:09,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:09,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 22:46:09,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:09,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 22:46:09,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:09,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:09,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:46:09,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:09,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 22:46:09,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:09,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1075 [2020-10-14 22:46:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:09,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:10,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:10,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-14 22:46:10,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:10,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-14 22:46:10,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:10,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:10,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:46:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:46:10,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 22:46:10,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1498 backedges. 638 proven. 2 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2020-10-14 22:46:11,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414626693] [2020-10-14 22:46:11,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:46:11,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:46:11,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173529748] [2020-10-14 22:46:11,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:46:11,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:46:11,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:46:11,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:46:11,676 INFO L87 Difference]: Start difference. First operand 36273 states and 41063 transitions. Second operand 7 states. [2020-10-14 22:46:24,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:46:24,684 INFO L93 Difference]: Finished difference Result 83305 states and 95815 transitions. [2020-10-14 22:46:24,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:46:24,685 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1233 [2020-10-14 22:46:24,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:46:24,770 INFO L225 Difference]: With dead ends: 83305 [2020-10-14 22:46:24,770 INFO L226 Difference]: Without dead ends: 48450 [2020-10-14 22:46:24,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:46:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48450 states. [2020-10-14 22:46:25,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48450 to 47735. [2020-10-14 22:46:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47735 states. [2020-10-14 22:46:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47735 states to 47735 states and 54045 transitions. [2020-10-14 22:46:25,629 INFO L78 Accepts]: Start accepts. Automaton has 47735 states and 54045 transitions. Word has length 1233 [2020-10-14 22:46:25,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:46:25,631 INFO L479 AbstractCegarLoop]: Abstraction has 47735 states and 54045 transitions. [2020-10-14 22:46:25,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:46:25,631 INFO L276 IsEmpty]: Start isEmpty. Operand 47735 states and 54045 transitions. [2020-10-14 22:46:25,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1252 [2020-10-14 22:46:25,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:46:25,668 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:25,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:46:25,669 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:46:25,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:46:25,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1553286280, now seen corresponding path program 1 times [2020-10-14 22:46:25,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:46:25,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332793935] [2020-10-14 22:46:25,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:46:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:28,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:28,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1275 [2020-10-14 22:46:28,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:46:28,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2963 [2020-10-14 22:46:28,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:28,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:28,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:46:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-14 22:46:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 22:46:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:29,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:46:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:29,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:29,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:46:29,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:29,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:46:29,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:29,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:29,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:29,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:29,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:29,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:29,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:46:29,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:29,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:29,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:29,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:46:29,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:29,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 22:46:29,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:29,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:29,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:29,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:29,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:29,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:29,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:46:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:29,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:29,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:29,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:46:29,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:29,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:46:29,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:29,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:29,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:29,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:29,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:29,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:46:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:29,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:29,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:29,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:46:29,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:29,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:46:29,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:29,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:29,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:29,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:29,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:46:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:29,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:29,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:29,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:46:29,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:29,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 22:46:29,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:29,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:29,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:29,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:29,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:46:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:29,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:29,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:29,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:46:29,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:29,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:46:29,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:29,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:29,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:29,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:29,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:46:29,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:29,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:29,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:29,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 22:46:29,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:29,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 22:46:29,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:29,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:29,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:29,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:29,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:29,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:29,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-14 22:46:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:29,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:29,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:46:29,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:29,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:46:29,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:29,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:29,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:46:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:46:29,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:29,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-14 22:46:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:29,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:30,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:30,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 22:46:30,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:30,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 22:46:30,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:30,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:46:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:46:30,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 22:46:30,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1573 backedges. 650 proven. 2 refuted. 0 times theorem prover too weak. 921 trivial. 0 not checked. [2020-10-14 22:46:31,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332793935] [2020-10-14 22:46:31,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:46:31,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:46:31,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382127754] [2020-10-14 22:46:31,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:46:31,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:46:31,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:46:31,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:46:31,448 INFO L87 Difference]: Start difference. First operand 47735 states and 54045 transitions. Second operand 7 states. [2020-10-14 22:46:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:46:44,685 INFO L93 Difference]: Finished difference Result 103374 states and 119097 transitions. [2020-10-14 22:46:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:46:44,687 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1251 [2020-10-14 22:46:44,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:46:44,811 INFO L225 Difference]: With dead ends: 103374 [2020-10-14 22:46:44,811 INFO L226 Difference]: Without dead ends: 56347 [2020-10-14 22:46:44,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:46:44,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56347 states. [2020-10-14 22:46:45,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56347 to 54924. [2020-10-14 22:46:45,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54924 states. [2020-10-14 22:46:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54924 states to 54924 states and 62277 transitions. [2020-10-14 22:46:45,532 INFO L78 Accepts]: Start accepts. Automaton has 54924 states and 62277 transitions. Word has length 1251 [2020-10-14 22:46:45,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:46:45,533 INFO L479 AbstractCegarLoop]: Abstraction has 54924 states and 62277 transitions. [2020-10-14 22:46:45,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:46:45,533 INFO L276 IsEmpty]: Start isEmpty. Operand 54924 states and 62277 transitions. [2020-10-14 22:46:45,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1274 [2020-10-14 22:46:45,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:46:45,557 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:45,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:46:45,557 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:46:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:46:45,558 INFO L82 PathProgramCache]: Analyzing trace with hash -45444400, now seen corresponding path program 1 times [2020-10-14 22:46:45,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:46:45,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113877597] [2020-10-14 22:46:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:46:45,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:45,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:48,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:48,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1299 [2020-10-14 22:46:48,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:46:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2854 [2020-10-14 22:46:48,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:48,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:46:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-14 22:46:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 22:46:48,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:48,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:46:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:48,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:48,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:48,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:46:48,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:48,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:46:48,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:48,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:48,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:48,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:48,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:48,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:48,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:46:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:48,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:48,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:48,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-14 22:46:48,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:48,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 22:46:48,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:48,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:48,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:46:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:48,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:49,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:49,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-14 22:46:49,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:49,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:46:49,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:49,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:49,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:49,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:49,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-14 22:46:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:49,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:49,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:49,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 22:46:49,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:49,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:46:49,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:49,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:49,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:49,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:49,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:49,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-14 22:46:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:49,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:49,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:49,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 22:46:49,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:49,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 22:46:49,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:49,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:49,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:49,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:49,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:49,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:49,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:46:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:49,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:49,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:49,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 22:46:49,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:46:49,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:49,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-14 22:46:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:49,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:49,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:49,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 22:46:49,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:49,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 22:46:49,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:49,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:49,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:49,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-14 22:46:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:49,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:49,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:49,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:46:49,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:49,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:46:49,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:49,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:46:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:46:49,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:46:49,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:49,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1096 [2020-10-14 22:46:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:49,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:49,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:49,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 22:46:49,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:49,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 22:46:49,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:49,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:49,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:46:49,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:46:49,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 22:46:49,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:49,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1167 [2020-10-14 22:46:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:46:49,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:46:49,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:46:49,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 22:46:49,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:46:49,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 22:46:49,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:46:49,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:46:49,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:46:49,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-14 22:46:49,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:46:49,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:46:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1777 backedges. 507 proven. 70 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked. [2020-10-14 22:46:51,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113877597] [2020-10-14 22:46:51,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:46:51,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:46:51,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601398759] [2020-10-14 22:46:51,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:46:51,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:46:51,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:46:51,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:46:51,008 INFO L87 Difference]: Start difference. First operand 54924 states and 62277 transitions. Second operand 7 states.