/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=NARROWEST --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/Problem06_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 07:02:59,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 07:02:59,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 07:02:59,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 07:02:59,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 07:02:59,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 07:02:59,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 07:02:59,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 07:02:59,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 07:02:59,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 07:02:59,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 07:02:59,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 07:02:59,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 07:02:59,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 07:02:59,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 07:02:59,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 07:02:59,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 07:02:59,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 07:02:59,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 07:02:59,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 07:02:59,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 07:02:59,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 07:02:59,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 07:02:59,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 07:02:59,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 07:02:59,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 07:02:59,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 07:02:59,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 07:02:59,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 07:02:59,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 07:02:59,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 07:02:59,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 07:02:59,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 07:02:59,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 07:02:59,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 07:02:59,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 07:02:59,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 07:02:59,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 07:02:59,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 07:02:59,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 07:02:59,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 07:02:59,266 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 [2020-10-13 07:02:59,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 07:02:59,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 07:02:59,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 07:02:59,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 07:02:59,290 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 07:02:59,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 07:02:59,290 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 07:02:59,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 07:02:59,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 07:02:59,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 07:02:59,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 07:02:59,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 07:02:59,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 07:02:59,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 07:02:59,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 07:02:59,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 07:02:59,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 07:02:59,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 07:02:59,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 07:02:59,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 07:02:59,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 07:02:59,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 07:02:59,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 07:02:59,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 07:02:59,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 07:02:59,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 07:02:59,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 07:02:59,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 07:02:59,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 07:02:59,295 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 07:02:59,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 07:02:59,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 07:02:59,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 07:02:59,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 07:02:59,662 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 07:02:59,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label15.c [2020-10-13 07:02:59,721 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bb9c6301/7ff9b8495a4b42ff9f64fa04f6a3ee01/FLAG27a291ed3 [2020-10-13 07:03:00,731 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 07:03:00,732 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label15.c [2020-10-13 07:03:00,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bb9c6301/7ff9b8495a4b42ff9f64fa04f6a3ee01/FLAG27a291ed3 [2020-10-13 07:03:01,094 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2bb9c6301/7ff9b8495a4b42ff9f64fa04f6a3ee01 [2020-10-13 07:03:01,103 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 07:03:01,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 07:03:01,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 07:03:01,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 07:03:01,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 07:03:01,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:03:01" (1/1) ... [2020-10-13 07:03:01,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34f77297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:01, skipping insertion in model container [2020-10-13 07:03:01,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:03:01" (1/1) ... [2020-10-13 07:03:01,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 07:03:01,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 07:03:03,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:03:03,815 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 07:03:05,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 07:03:05,388 INFO L208 MainTranslator]: Completed translation [2020-10-13 07:03:05,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:05 WrapperNode [2020-10-13 07:03:05,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 07:03:05,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 07:03:05,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 07:03:05,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 07:03:05,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:05" (1/1) ... [2020-10-13 07:03:05,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:05" (1/1) ... [2020-10-13 07:03:05,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:05" (1/1) ... [2020-10-13 07:03:05,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:05" (1/1) ... [2020-10-13 07:03:05,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:05" (1/1) ... [2020-10-13 07:03:05,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:05" (1/1) ... [2020-10-13 07:03:05,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:05" (1/1) ... [2020-10-13 07:03:05,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 07:03:05,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 07:03:05,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 07:03:05,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 07:03:05,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:05" (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 [2020-10-13 07:03:05,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 07:03:05,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 07:03:05,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-13 07:03:05,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-13 07:03:05,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-13 07:03:05,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-13 07:03:05,951 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-13 07:03:05,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 07:03:05,951 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-13 07:03:05,951 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-13 07:03:05,951 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-13 07:03:05,951 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-13 07:03:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-13 07:03:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 07:03:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 07:03:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 07:03:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 07:03:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 07:03:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 07:03:13,103 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 07:03:13,103 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-13 07:03:13,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:13 BoogieIcfgContainer [2020-10-13 07:03:13,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 07:03:13,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 07:03:13,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 07:03:13,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 07:03:13,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:03:01" (1/3) ... [2020-10-13 07:03:13,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27270709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:03:13, skipping insertion in model container [2020-10-13 07:03:13,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:03:05" (2/3) ... [2020-10-13 07:03:13,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27270709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:03:13, skipping insertion in model container [2020-10-13 07:03:13,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:03:13" (3/3) ... [2020-10-13 07:03:13,126 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label15.c [2020-10-13 07:03:13,136 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 07:03:13,145 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 07:03:13,159 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 07:03:13,189 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 07:03:13,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 07:03:13,189 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 07:03:13,190 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 07:03:13,190 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 07:03:13,190 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 07:03:13,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 07:03:13,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 07:03:13,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-13 07:03:13,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2020-10-13 07:03:13,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:03:13,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:03:13,305 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:03:13,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:03:13,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1216389161, now seen corresponding path program 1 times [2020-10-13 07:03:13,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:03:13,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572293579] [2020-10-13 07:03:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:03:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:14,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:17,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:19,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:19,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 976 [2020-10-13 07:03:19,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:03:19,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-13 07:03:19,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:19,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 07:03:19,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:03:19,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-13 07:03:19,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 07:03:25,186 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 56 [2020-10-13 07:03:25,411 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-10-13 07:03:25,626 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-10-13 07:03:25,866 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2020-10-13 07:03:26,100 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2020-10-13 07:03:26,333 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-13 07:03:26,518 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-13 07:03:26,725 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2020-10-13 07:03:26,877 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-13 07:03:27,083 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2020-10-13 07:03:27,256 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 [2020-10-13 07:03:27,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:03:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:03:27,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:03:27,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:03:27,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:03:27,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:03:27,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 07:03:27,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:03:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:03:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:03:27,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:03:27,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:03:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:03:38,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572293579] [2020-10-13 07:03:38,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:03:38,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-13 07:03:38,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418115053] [2020-10-13 07:03:38,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 07:03:38,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:03:38,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 07:03:38,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-13 07:03:38,537 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 19 states. [2020-10-13 07:03:38,882 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-13 07:03:39,517 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 166 [2020-10-13 07:03:40,140 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 166 [2020-10-13 07:03:40,827 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 174 [2020-10-13 07:03:44,334 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 173 [2020-10-13 07:03:47,381 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 172 [2020-10-13 07:03:49,570 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 163 [2020-10-13 07:03:50,210 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 176 [2020-10-13 07:03:51,093 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 168 [2020-10-13 07:03:59,369 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 161 [2020-10-13 07:03:59,959 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 166 [2020-10-13 07:04:02,731 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 165 [2020-10-13 07:04:09,080 WARN L193 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 159 [2020-10-13 07:04:09,683 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 163 [2020-10-13 07:04:11,803 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 161 [2020-10-13 07:04:22,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:04:22,940 INFO L93 Difference]: Finished difference Result 3396 states and 6359 transitions. [2020-10-13 07:04:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 07:04:22,944 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 960 [2020-10-13 07:04:22,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:04:22,983 INFO L225 Difference]: With dead ends: 3396 [2020-10-13 07:04:22,984 INFO L226 Difference]: Without dead ends: 2019 [2020-10-13 07:04:22,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=172, Invalid=950, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 07:04:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2019 states. [2020-10-13 07:04:23,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2019 to 2019. [2020-10-13 07:04:23,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2019 states. [2020-10-13 07:04:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 3053 transitions. [2020-10-13 07:04:23,167 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 3053 transitions. Word has length 960 [2020-10-13 07:04:23,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:04:23,170 INFO L479 AbstractCegarLoop]: Abstraction has 2019 states and 3053 transitions. [2020-10-13 07:04:23,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 07:04:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 3053 transitions. [2020-10-13 07:04:23,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1031 [2020-10-13 07:04:23,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:04:23,222 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:04:23,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 07:04:23,222 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:04:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:04:23,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1407859626, now seen corresponding path program 1 times [2020-10-13 07:04:23,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:04:23,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872505795] [2020-10-13 07:04:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:04:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:24,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:25,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:28,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:28,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1048 [2020-10-13 07:04:28,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:04:28,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-13 07:04:28,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:28,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 07:04:28,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:04:28,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 07:04:28,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:29,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:04:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:29,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:29,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:29,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:04:29,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:04:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 07:04:29,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:04:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:04:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:04:29,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:29,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:04:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:29,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:29,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:29,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 07:04:29,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:04:29,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-13 07:04:29,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:29,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:04:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:04:29,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 07:04:29,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:04:30,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872505795] [2020-10-13 07:04:30,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 07:04:30,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 07:04:30,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711040579] [2020-10-13 07:04:30,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:04:30,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:04:30,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:04:30,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:04:30,845 INFO L87 Difference]: Start difference. First operand 2019 states and 3053 transitions. Second operand 7 states. [2020-10-13 07:04:31,001 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-13 07:04:32,049 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-13 07:04:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:04:50,970 INFO L93 Difference]: Finished difference Result 4497 states and 7530 transitions. [2020-10-13 07:04:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 07:04:50,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1030 [2020-10-13 07:04:50,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:04:50,988 INFO L225 Difference]: With dead ends: 4497 [2020-10-13 07:04:50,988 INFO L226 Difference]: Without dead ends: 3238 [2020-10-13 07:04:50,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-13 07:04:50,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2020-10-13 07:04:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 3148. [2020-10-13 07:04:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2020-10-13 07:04:51,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 4655 transitions. [2020-10-13 07:04:51,085 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 4655 transitions. Word has length 1030 [2020-10-13 07:04:51,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:04:51,085 INFO L479 AbstractCegarLoop]: Abstraction has 3148 states and 4655 transitions. [2020-10-13 07:04:51,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:04:51,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 4655 transitions. [2020-10-13 07:04:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2020-10-13 07:04:51,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:04:51,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:04:51,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 07:04:51,131 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:04:51,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:04:51,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1486544915, now seen corresponding path program 1 times [2020-10-13 07:04:51,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:04:51,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086353031] [2020-10-13 07:04:51,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:04:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:51,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:53,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:56,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:56,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1100 [2020-10-13 07:04:56,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:04:56,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 07:04:56,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 07:04:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 07:04:56,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 967 [2020-10-13 07:04:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:57,565 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:04:57,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:04:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:57,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:57,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:57,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:04:57,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:04:57,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 07:04:57,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:04:57,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:04:57,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:04:57,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:57,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:04:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:04:57,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:04:57,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:04:57,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:04:57,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:04:57,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 07:04:57,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:04:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:04:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:04:57,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 07:04:57,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:04:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 118 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 07:04:58,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086353031] [2020-10-13 07:04:58,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:04:58,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 07:04:58,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248750988] [2020-10-13 07:04:58,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 07:04:58,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:04:58,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 07:04:58,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 07:04:58,929 INFO L87 Difference]: Start difference. First operand 3148 states and 4655 transitions. Second operand 5 states. [2020-10-13 07:04:59,077 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:05:13,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:05:13,147 INFO L93 Difference]: Finished difference Result 7687 states and 12136 transitions. [2020-10-13 07:05:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 07:05:13,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1082 [2020-10-13 07:05:13,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:05:13,178 INFO L225 Difference]: With dead ends: 7687 [2020-10-13 07:05:13,178 INFO L226 Difference]: Without dead ends: 5299 [2020-10-13 07:05:13,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 07:05:13,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5299 states. [2020-10-13 07:05:13,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5299 to 5276. [2020-10-13 07:05:13,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5276 states. [2020-10-13 07:05:13,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5276 states to 5276 states and 7574 transitions. [2020-10-13 07:05:13,311 INFO L78 Accepts]: Start accepts. Automaton has 5276 states and 7574 transitions. Word has length 1082 [2020-10-13 07:05:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:05:13,313 INFO L479 AbstractCegarLoop]: Abstraction has 5276 states and 7574 transitions. [2020-10-13 07:05:13,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 07:05:13,313 INFO L276 IsEmpty]: Start isEmpty. Operand 5276 states and 7574 transitions. [2020-10-13 07:05:13,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1095 [2020-10-13 07:05:13,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:05:13,338 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:05:13,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 07:05:13,338 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:05:13,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:05:13,339 INFO L82 PathProgramCache]: Analyzing trace with hash -165022576, now seen corresponding path program 1 times [2020-10-13 07:05:13,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:05:13,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060884559] [2020-10-13 07:05:13,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:05:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:05:13,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:14,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:17,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:18,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:05:18,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1114 [2020-10-13 07:05:18,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:05:18,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-13 07:05:18,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:05:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:05:18,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 07:05:18,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 07:05:18,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:05:18,937 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:05:18,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:05:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:05:18,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:18,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:05:18,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:05:18,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:05:18,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 07:05:18,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:05:18,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:05:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:05:18,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:05:18,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:05:19,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:05:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:05:19,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:19,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:05:19,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:05:19,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:05:19,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-13 07:05:19,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:05:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:05:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:05:19,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 07:05:19,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:05:19,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:05:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:05:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:19,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:05:19,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 07:05:19,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:05:19,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 07:05:19,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:05:19,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:05:19,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:05:19,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 07:05:19,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:05:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:05:20,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060884559] [2020-10-13 07:05:20,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:05:20,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:05:20,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781086648] [2020-10-13 07:05:20,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:05:20,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:05:20,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:05:20,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:05:20,107 INFO L87 Difference]: Start difference. First operand 5276 states and 7574 transitions. Second operand 7 states. [2020-10-13 07:05:20,248 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:05:21,382 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 07:05:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:05:37,873 INFO L93 Difference]: Finished difference Result 14226 states and 21307 transitions. [2020-10-13 07:05:37,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 07:05:37,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1094 [2020-10-13 07:05:37,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:05:37,927 INFO L225 Difference]: With dead ends: 14226 [2020-10-13 07:05:37,927 INFO L226 Difference]: Without dead ends: 9710 [2020-10-13 07:05:37,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 07:05:37,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9710 states. [2020-10-13 07:05:38,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9710 to 9639. [2020-10-13 07:05:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9639 states. [2020-10-13 07:05:38,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9639 states to 9639 states and 13359 transitions. [2020-10-13 07:05:38,177 INFO L78 Accepts]: Start accepts. Automaton has 9639 states and 13359 transitions. Word has length 1094 [2020-10-13 07:05:38,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:05:38,178 INFO L479 AbstractCegarLoop]: Abstraction has 9639 states and 13359 transitions. [2020-10-13 07:05:38,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:05:38,178 INFO L276 IsEmpty]: Start isEmpty. Operand 9639 states and 13359 transitions. [2020-10-13 07:05:38,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1103 [2020-10-13 07:05:38,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:05:38,218 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:05:38,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 07:05:38,219 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:05:38,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:05:38,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1643282297, now seen corresponding path program 1 times [2020-10-13 07:05:38,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:05:38,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665185076] [2020-10-13 07:05:38,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:05:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:05:38,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:39,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:43,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:05:43,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1122 [2020-10-13 07:05:43,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:05:43,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5229 [2020-10-13 07:05:43,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:05:43,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:05:43,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 07:05:43,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 07:05:43,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:05:44,036 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:05:44,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:05:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:05:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:44,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:05:44,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:05:44,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:05:44,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 07:05:44,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:05:44,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:05:44,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:05:44,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:05:44,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:05:44,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:05:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:05:44,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:44,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:05:44,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:05:44,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:05:44,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-13 07:05:44,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:05:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:05:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:05:44,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 07:05:44,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:05:44,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:05:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:05:44,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:05:44,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:05:44,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 07:05:44,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:05:44,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 07:05:44,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:05:44,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:05:44,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:05:44,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 07:05:44,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:05:45,149 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:05:45,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665185076] [2020-10-13 07:05:45,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:05:45,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:05:45,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174882805] [2020-10-13 07:05:45,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:05:45,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:05:45,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:05:45,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:05:45,152 INFO L87 Difference]: Start difference. First operand 9639 states and 13359 transitions. Second operand 7 states. [2020-10-13 07:05:45,310 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:05:46,882 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:06:05,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:06:05,320 INFO L93 Difference]: Finished difference Result 28123 states and 42367 transitions. [2020-10-13 07:06:05,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 07:06:05,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1102 [2020-10-13 07:06:05,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:06:05,420 INFO L225 Difference]: With dead ends: 28123 [2020-10-13 07:06:05,421 INFO L226 Difference]: Without dead ends: 19244 [2020-10-13 07:06:05,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-13 07:06:05,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19244 states. [2020-10-13 07:06:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19244 to 18708. [2020-10-13 07:06:05,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18708 states. [2020-10-13 07:06:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18708 states to 18708 states and 25489 transitions. [2020-10-13 07:06:05,973 INFO L78 Accepts]: Start accepts. Automaton has 18708 states and 25489 transitions. Word has length 1102 [2020-10-13 07:06:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:06:05,974 INFO L479 AbstractCegarLoop]: Abstraction has 18708 states and 25489 transitions. [2020-10-13 07:06:05,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:06:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 18708 states and 25489 transitions. [2020-10-13 07:06:06,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1110 [2020-10-13 07:06:06,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:06:06,032 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:06:06,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 07:06:06,032 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:06:06,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:06:06,033 INFO L82 PathProgramCache]: Analyzing trace with hash 443232502, now seen corresponding path program 1 times [2020-10-13 07:06:06,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:06:06,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670145238] [2020-10-13 07:06:06,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:06:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:06,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:07,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:11,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:11,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1129 [2020-10-13 07:06:11,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 07:06:11,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5187 [2020-10-13 07:06:11,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:11,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:06:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-13 07:06:11,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 07:06:11,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:06:11,762 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:06:11,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:06:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:11,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:11,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:11,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:06:11,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:06:11,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 07:06:11,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:11,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 07:06:11,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:06:11,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 07:06:11,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:06:11,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:06:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:11,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:11,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:11,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:06:11,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:06:11,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 07:06:11,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:11,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:06:11,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:06:11,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-13 07:06:11,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:06:12,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:06:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:12,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:12,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:12,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 07:06:12,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:06:12,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 07:06:12,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:06:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:06:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 07:06:12,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:06:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 07:06:12,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670145238] [2020-10-13 07:06:12,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:06:12,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 07:06:12,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253776430] [2020-10-13 07:06:12,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 07:06:12,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:06:12,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 07:06:12,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 07:06:12,559 INFO L87 Difference]: Start difference. First operand 18708 states and 25489 transitions. Second operand 7 states. [2020-10-13 07:06:12,691 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-13 07:06:14,203 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-13 07:06:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 07:06:28,538 INFO L93 Difference]: Finished difference Result 54077 states and 78256 transitions. [2020-10-13 07:06:28,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 07:06:28,539 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1109 [2020-10-13 07:06:28,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 07:06:28,659 INFO L225 Difference]: With dead ends: 54077 [2020-10-13 07:06:28,659 INFO L226 Difference]: Without dead ends: 36129 [2020-10-13 07:06:28,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-13 07:06:28,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36129 states. [2020-10-13 07:06:29,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36129 to 35904. [2020-10-13 07:06:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35904 states. [2020-10-13 07:06:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35904 states to 35904 states and 49662 transitions. [2020-10-13 07:06:29,538 INFO L78 Accepts]: Start accepts. Automaton has 35904 states and 49662 transitions. Word has length 1109 [2020-10-13 07:06:29,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 07:06:29,539 INFO L479 AbstractCegarLoop]: Abstraction has 35904 states and 49662 transitions. [2020-10-13 07:06:29,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 07:06:29,539 INFO L276 IsEmpty]: Start isEmpty. Operand 35904 states and 49662 transitions. [2020-10-13 07:06:29,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1128 [2020-10-13 07:06:29,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 07:06:29,626 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 07:06:29,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 07:06:29,627 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 07:06:29,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 07:06:29,628 INFO L82 PathProgramCache]: Analyzing trace with hash -341150938, now seen corresponding path program 1 times [2020-10-13 07:06:29,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 07:06:29,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511502350] [2020-10-13 07:06:29,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 07:06:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:29,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:32,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:34,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:34,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1149 [2020-10-13 07:06:34,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 07:06:34,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-13 07:06:34,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 07:06:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 07:06:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-13 07:06:34,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:06:35,422 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-13 07:06:35,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 07:06:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:35,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:35,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:35,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 07:06:35,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:06:35,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 07:06:35,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 07:06:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 07:06:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 07:06:35,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 07:06:35,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 07:06:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:35,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:35,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:35,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-13 07:06:35,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:06:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-13 07:06:35,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:06:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:06:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-13 07:06:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:06:35,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 07:06:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:35,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:35,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 07:06:35,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:06:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-13 07:06:35,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:06:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:06:35,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 07:06:35,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:06:36,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 07:06:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 07:06:36,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 07:06:36,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 07:06:36,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 07:06:36,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 07:06:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 07:06:36,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 07:06:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 07:06:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 07:06:36,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 07:06:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 07:06:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 160 proven. 50 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 07:06:37,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511502350] [2020-10-13 07:06:37,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 07:06:37,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 07:06:37,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323276333] [2020-10-13 07:06:37,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 07:06:37,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 07:06:37,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 07:06:37,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-13 07:06:37,039 INFO L87 Difference]: Start difference. First operand 35904 states and 49662 transitions. Second operand 9 states. [2020-10-13 07:06:37,198 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 133