/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:18:30,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:18:30,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:18:30,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:18:30,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:18:30,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:18:30,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:18:30,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:18:30,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:18:30,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:18:30,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:18:30,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:18:30,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:18:30,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:18:30,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:18:30,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:18:30,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:18:30,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:18:30,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:18:30,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:18:30,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:18:30,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:18:30,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:18:30,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:18:30,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:18:30,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:18:30,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:18:30,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:18:30,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:18:30,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:18:30,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:18:30,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:18:30,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:18:30,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:18:30,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:18:30,230 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:18:30,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:18:30,231 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:18:30,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:18:30,232 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:18:30,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:18:30,234 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:18:30,279 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:18:30,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:18:30,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:18:30,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:18:30,283 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:18:30,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:18:30,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:18:30,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:18:30,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:18:30,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:18:30,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:18:30,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:18:30,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:18:30,285 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:18:30,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:18:30,285 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:18:30,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:18:30,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:18:30,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:18:30,288 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:18:30,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:18:30,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:18:30,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:18:30,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:18:30,289 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:18:30,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:18:30,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:18:30,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:18:30,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:18:30,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:18:30,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:18:30,623 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:18:30,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:18:30,632 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:18:30,633 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:18:30,633 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label51.c [2020-10-14 21:18:30,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0160531a/00af118f2e494aa4bfc0c48dbe9c487e/FLAG9b75ae65e [2020-10-14 21:18:31,421 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:18:31,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label51.c [2020-10-14 21:18:31,450 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0160531a/00af118f2e494aa4bfc0c48dbe9c487e/FLAG9b75ae65e [2020-10-14 21:18:31,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0160531a/00af118f2e494aa4bfc0c48dbe9c487e [2020-10-14 21:18:31,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:18:31,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:18:31,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:18:31,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:18:31,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:18:31,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:18:31" (1/1) ... [2020-10-14 21:18:31,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ef7a733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:31, skipping insertion in model container [2020-10-14 21:18:31,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:18:31" (1/1) ... [2020-10-14 21:18:31,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:18:31,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:18:33,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:18:33,237 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:18:34,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:18:34,067 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:18:34,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:34 WrapperNode [2020-10-14 21:18:34,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:18:34,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:18:34,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:18:34,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:18:34,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:34" (1/1) ... [2020-10-14 21:18:34,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:34" (1/1) ... [2020-10-14 21:18:34,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:34" (1/1) ... [2020-10-14 21:18:34,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:34" (1/1) ... [2020-10-14 21:18:34,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:34" (1/1) ... [2020-10-14 21:18:34,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:34" (1/1) ... [2020-10-14 21:18:34,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:34" (1/1) ... [2020-10-14 21:18:34,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:18:34,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:18:34,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:18:34,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:18:34,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:34" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:18:34,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:18:34,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:18:34,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:18:34,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:18:34,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:18:34,587 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:18:34,587 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:18:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:18:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:18:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:18:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:18:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:18:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:18:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:18:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:18:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:18:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:18:39,126 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:18:39,126 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:18:39,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:18:39 BoogieIcfgContainer [2020-10-14 21:18:39,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:18:39,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:18:39,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:18:39,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:18:39,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:18:31" (1/3) ... [2020-10-14 21:18:39,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2467bea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:18:39, skipping insertion in model container [2020-10-14 21:18:39,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:18:34" (2/3) ... [2020-10-14 21:18:39,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2467bea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:18:39, skipping insertion in model container [2020-10-14 21:18:39,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:18:39" (3/3) ... [2020-10-14 21:18:39,155 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label51.c [2020-10-14 21:18:39,166 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:18:39,179 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:18:39,194 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:18:39,229 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:18:39,230 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:18:39,230 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:18:39,230 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:18:39,230 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:18:39,230 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:18:39,230 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:18:39,231 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:18:39,273 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:18:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 21:18:39,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:39,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:18:39,284 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:39,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:39,289 INFO L82 PathProgramCache]: Analyzing trace with hash 10531578, now seen corresponding path program 1 times [2020-10-14 21:18:39,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:39,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039313384] [2020-10-14 21:18:39,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:39,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:39,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 21:18:39,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 21:18:39,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:39,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:18:39,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:18:39,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 21:18:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:18:39,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:39,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:39,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:39,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:39,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:39,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:18:39,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:39,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:39,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:18:39,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:18:39,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039313384] [2020-10-14 21:18:39,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:18:39,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:18:39,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242475869] [2020-10-14 21:18:39,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:18:39,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:39,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:18:39,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:18:39,849 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:18:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:48,192 INFO L93 Difference]: Finished difference Result 2487 states and 4748 transitions. [2020-10-14 21:18:48,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:18:48,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-14 21:18:48,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:48,224 INFO L225 Difference]: With dead ends: 2487 [2020-10-14 21:18:48,225 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:18:48,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:18:48,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:18:48,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2020-10-14 21:18:48,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-14 21:18:48,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2484 transitions. [2020-10-14 21:18:48,389 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2484 transitions. Word has length 17 [2020-10-14 21:18:48,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:48,389 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 2484 transitions. [2020-10-14 21:18:48,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:18:48,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2484 transitions. [2020-10-14 21:18:48,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-14 21:18:48,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:48,395 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:18:48,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:18:48,395 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:48,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:48,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1810350299, now seen corresponding path program 1 times [2020-10-14 21:18:48,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:48,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923898717] [2020-10-14 21:18:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:48,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:49,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:49,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:18:49,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:18:49,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-10-14 21:18:49,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:49,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:18:49,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:18:49,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:18:49,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:18:49,639 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-14 21:18:49,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:49,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:49,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:49,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:49,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:49,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:18:49,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:49,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:49,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:49,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:49,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:18:49,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:49,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:49,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:49,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:49,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:18:49,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:49,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 21:18:49,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:49,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:18:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:18:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:18:50,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923898717] [2020-10-14 21:18:50,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:18:50,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:18:50,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794781047] [2020-10-14 21:18:50,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:18:50,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:50,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:18:50,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:18:50,022 INFO L87 Difference]: Start difference. First operand 1564 states and 2484 transitions. Second operand 7 states. [2020-10-14 21:19:00,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:00,097 INFO L93 Difference]: Finished difference Result 4760 states and 7582 transitions. [2020-10-14 21:19:00,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:19:00,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2020-10-14 21:19:00,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:00,116 INFO L225 Difference]: With dead ends: 4760 [2020-10-14 21:19:00,116 INFO L226 Difference]: Without dead ends: 3202 [2020-10-14 21:19:00,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:19:00,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2020-10-14 21:19:00,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 3143. [2020-10-14 21:19:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3143 states. [2020-10-14 21:19:00,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 4559 transitions. [2020-10-14 21:19:00,217 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 4559 transitions. Word has length 96 [2020-10-14 21:19:00,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:00,218 INFO L479 AbstractCegarLoop]: Abstraction has 3143 states and 4559 transitions. [2020-10-14 21:19:00,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:19:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 4559 transitions. [2020-10-14 21:19:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-14 21:19:00,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:00,222 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:19:00,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:19:00,222 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:00,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:00,223 INFO L82 PathProgramCache]: Analyzing trace with hash -274533586, now seen corresponding path program 1 times [2020-10-14 21:19:00,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:00,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190318129] [2020-10-14 21:19:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:00,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:00,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:01,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:01,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-14 21:19:01,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:19:01,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1352 [2020-10-14 21:19:01,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:01,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:19:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:19:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:19:01,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:01,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:01,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:01,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:01,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:01,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:01,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:19:01,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:01,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:01,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:01,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:19:01,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:01,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:01,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:02,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:02,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:19:02,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:02,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 21:19:02,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:02,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:02,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:19:02,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:19:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:19:02,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190318129] [2020-10-14 21:19:02,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:19:02,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:19:02,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506455146] [2020-10-14 21:19:02,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:19:02,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:02,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:19:02,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:19:02,236 INFO L87 Difference]: Start difference. First operand 3143 states and 4559 transitions. Second operand 7 states. [2020-10-14 21:19:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:12,854 INFO L93 Difference]: Finished difference Result 9655 states and 14129 transitions. [2020-10-14 21:19:12,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:19:12,858 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-14 21:19:12,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:12,890 INFO L225 Difference]: With dead ends: 9655 [2020-10-14 21:19:12,891 INFO L226 Difference]: Without dead ends: 6518 [2020-10-14 21:19:12,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:19:12,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6518 states. [2020-10-14 21:19:13,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6518 to 6343. [2020-10-14 21:19:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6343 states. [2020-10-14 21:19:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6343 states to 6343 states and 8121 transitions. [2020-10-14 21:19:13,078 INFO L78 Accepts]: Start accepts. Automaton has 6343 states and 8121 transitions. Word has length 125 [2020-10-14 21:19:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:13,079 INFO L479 AbstractCegarLoop]: Abstraction has 6343 states and 8121 transitions. [2020-10-14 21:19:13,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:19:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 6343 states and 8121 transitions. [2020-10-14 21:19:13,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 21:19:13,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:13,083 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:19:13,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:19:13,084 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:13,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:13,084 INFO L82 PathProgramCache]: Analyzing trace with hash -910097985, now seen corresponding path program 1 times [2020-10-14 21:19:13,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:13,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765722397] [2020-10-14 21:19:13,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:13,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:13,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:13,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:13,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 21:19:13,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:19:13,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-14 21:19:13,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:13,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:19:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:19:13,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 21:19:13,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:14,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:14,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:14,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:14,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:14,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:14,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:19:14,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:14,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:14,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:19:14,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:14,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:14,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:14,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:14,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:14,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:19:14,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:19:14,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-14 21:19:14,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:14,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:19:14,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:14,522 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:19:14,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765722397] [2020-10-14 21:19:14,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:19:14,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:19:14,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297117667] [2020-10-14 21:19:14,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:19:14,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:14,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:19:14,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:19:14,527 INFO L87 Difference]: Start difference. First operand 6343 states and 8121 transitions. Second operand 5 states. [2020-10-14 21:19:23,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:23,822 INFO L93 Difference]: Finished difference Result 18953 states and 24709 transitions. [2020-10-14 21:19:23,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:19:23,828 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-14 21:19:23,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:23,882 INFO L225 Difference]: With dead ends: 18953 [2020-10-14 21:19:23,882 INFO L226 Difference]: Without dead ends: 12616 [2020-10-14 21:19:23,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:19:23,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12616 states. [2020-10-14 21:19:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12616 to 11847. [2020-10-14 21:19:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11847 states. [2020-10-14 21:19:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11847 states to 11847 states and 14737 transitions. [2020-10-14 21:19:24,158 INFO L78 Accepts]: Start accepts. Automaton has 11847 states and 14737 transitions. Word has length 162 [2020-10-14 21:19:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:24,161 INFO L479 AbstractCegarLoop]: Abstraction has 11847 states and 14737 transitions. [2020-10-14 21:19:24,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:19:24,161 INFO L276 IsEmpty]: Start isEmpty. Operand 11847 states and 14737 transitions. [2020-10-14 21:19:24,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-14 21:19:24,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:24,173 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 21:19:24,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:19:24,173 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:24,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:24,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1808035326, now seen corresponding path program 1 times [2020-10-14 21:19:24,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:24,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557375936] [2020-10-14 21:19:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:24,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:24,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:24,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:25,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:25,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 21:19:25,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:19:25,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1430 [2020-10-14 21:19:25,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:25,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:19:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:19:25,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:19:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:25,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:25,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:25,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:25,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:25,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:19:25,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:25,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:25,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:25,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:19:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:25,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:26,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:26,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:19:26,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-14 21:19:26,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:26,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:19:26,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:19:26,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 21:19:26,307 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:19:26,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557375936] [2020-10-14 21:19:26,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:19:26,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:19:26,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241005481] [2020-10-14 21:19:26,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:19:26,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:26,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:19:26,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:19:26,310 INFO L87 Difference]: Start difference. First operand 11847 states and 14737 transitions. Second operand 7 states. [2020-10-14 21:19:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:39,694 INFO L93 Difference]: Finished difference Result 28611 states and 35281 transitions. [2020-10-14 21:19:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:19:39,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-10-14 21:19:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:39,751 INFO L225 Difference]: With dead ends: 28611 [2020-10-14 21:19:39,751 INFO L226 Difference]: Without dead ends: 16770 [2020-10-14 21:19:39,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:19:39,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16770 states. [2020-10-14 21:19:40,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16770 to 16704. [2020-10-14 21:19:40,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16704 states. [2020-10-14 21:19:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16704 states to 16704 states and 20164 transitions. [2020-10-14 21:19:40,127 INFO L78 Accepts]: Start accepts. Automaton has 16704 states and 20164 transitions. Word has length 165 [2020-10-14 21:19:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:40,127 INFO L479 AbstractCegarLoop]: Abstraction has 16704 states and 20164 transitions. [2020-10-14 21:19:40,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:19:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 16704 states and 20164 transitions. [2020-10-14 21:19:40,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-14 21:19:40,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:40,215 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:19:40,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:19:40,215 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:40,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:40,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1301041030, now seen corresponding path program 1 times [2020-10-14 21:19:40,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:40,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842717869] [2020-10-14 21:19:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:40,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:40,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:40,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:41,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:41,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-14 21:19:41,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:19:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-10-14 21:19:41,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:41,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:19:41,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:19:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:41,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:41,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:41,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:41,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:19:41,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:41,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:19:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:41,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:19:41,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:41,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:41,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:41,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:19:41,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:41,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 21:19:41,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:41,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:41,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:19:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:41,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:19:41,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:41,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:41,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:41,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:19:41,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 21:19:41,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:41,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:19:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:19:41,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:19:41,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842717869] [2020-10-14 21:19:41,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:19:41,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:19:41,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540028732] [2020-10-14 21:19:41,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:19:41,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:41,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:19:41,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:19:41,849 INFO L87 Difference]: Start difference. First operand 16704 states and 20164 transitions. Second operand 7 states. [2020-10-14 21:19:55,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:55,220 INFO L93 Difference]: Finished difference Result 39172 states and 49200 transitions. [2020-10-14 21:19:55,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:19:55,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-10-14 21:19:55,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:55,288 INFO L225 Difference]: With dead ends: 39172 [2020-10-14 21:19:55,288 INFO L226 Difference]: Without dead ends: 20088 [2020-10-14 21:19:55,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:19:55,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20088 states. [2020-10-14 21:19:55,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20088 to 19976. [2020-10-14 21:19:55,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19976 states. [2020-10-14 21:19:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19976 states to 19976 states and 23578 transitions. [2020-10-14 21:19:55,716 INFO L78 Accepts]: Start accepts. Automaton has 19976 states and 23578 transitions. Word has length 205 [2020-10-14 21:19:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:55,717 INFO L479 AbstractCegarLoop]: Abstraction has 19976 states and 23578 transitions. [2020-10-14 21:19:55,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:19:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 19976 states and 23578 transitions. [2020-10-14 21:19:55,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-14 21:19:55,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:55,720 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:19:55,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:19:55,721 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:55,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:55,721 INFO L82 PathProgramCache]: Analyzing trace with hash 8325034, now seen corresponding path program 1 times [2020-10-14 21:19:55,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:55,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796579194] [2020-10-14 21:19:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:55,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:56,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:57,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:57,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 21:19:57,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:19:57,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1259 [2020-10-14 21:19:57,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:57,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:57,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:57,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:19:57,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:19:57,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:19:57,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:57,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:57,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:57,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:57,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:19:57,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:57,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:19:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:19:57,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:57,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:57,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:57,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:57,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:19:57,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 21:19:57,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:57,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:19:57,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:57,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:19:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:57,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:57,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:19:57,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:57,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 21:19:57,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:57,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:57,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:57,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:19:57,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:19:57,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:19:57,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796579194] [2020-10-14 21:19:57,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:19:57,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:19:57,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492487546] [2020-10-14 21:19:57,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:19:57,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:57,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:19:57,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:19:57,577 INFO L87 Difference]: Start difference. First operand 19976 states and 23578 transitions. Second operand 7 states. [2020-10-14 21:20:16,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:20:16,925 INFO L93 Difference]: Finished difference Result 53063 states and 65886 transitions. [2020-10-14 21:20:16,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:20:16,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 251 [2020-10-14 21:20:16,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:20:17,007 INFO L225 Difference]: With dead ends: 53063 [2020-10-14 21:20:17,007 INFO L226 Difference]: Without dead ends: 33860 [2020-10-14 21:20:17,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:20:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33860 states. [2020-10-14 21:20:17,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33860 to 32144. [2020-10-14 21:20:17,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32144 states. [2020-10-14 21:20:17,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32144 states to 32144 states and 39161 transitions. [2020-10-14 21:20:17,620 INFO L78 Accepts]: Start accepts. Automaton has 32144 states and 39161 transitions. Word has length 251 [2020-10-14 21:20:17,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:20:17,621 INFO L479 AbstractCegarLoop]: Abstraction has 32144 states and 39161 transitions. [2020-10-14 21:20:17,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:20:17,621 INFO L276 IsEmpty]: Start isEmpty. Operand 32144 states and 39161 transitions. [2020-10-14 21:20:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-14 21:20:17,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:20:17,625 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:20:17,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:20:17,626 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:20:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:20:17,626 INFO L82 PathProgramCache]: Analyzing trace with hash 9545698, now seen corresponding path program 1 times [2020-10-14 21:20:17,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:20:17,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394910863] [2020-10-14 21:20:17,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:20:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:17,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:17,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:18,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:18,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:18,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-14 21:20:18,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:20:18,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-10-14 21:20:18,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:18,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:20:18,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:20:18,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:20:18,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:20:18,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:20:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:18,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:18,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:18,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:20:18,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:18,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:20:18,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:18,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:20:18,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:18,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:20:18,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:18,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:20:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:18,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:18,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:18,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:20:18,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 21:20:18,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:18,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:18,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:20:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:18,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:20:18,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:20,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:20:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:20,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:20,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:20,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:20:20,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:20,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 21:20:20,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:20,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:20,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:20:20,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:20:20,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:20:20,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:20:20,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394910863] [2020-10-14 21:20:20,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:20:20,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:20:20,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186108541] [2020-10-14 21:20:20,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:20:20,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:20:20,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:20:20,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:20:20,276 INFO L87 Difference]: Start difference. First operand 32144 states and 39161 transitions. Second operand 7 states. [2020-10-14 21:20:36,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:20:36,845 INFO L93 Difference]: Finished difference Result 80086 states and 101251 transitions. [2020-10-14 21:20:36,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:20:36,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-14 21:20:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:20:36,990 INFO L225 Difference]: With dead ends: 80086 [2020-10-14 21:20:36,991 INFO L226 Difference]: Without dead ends: 48715 [2020-10-14 21:20:37,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:20:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48715 states. [2020-10-14 21:20:38,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48715 to 46943. [2020-10-14 21:20:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46943 states. [2020-10-14 21:20:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46943 states to 46943 states and 56915 transitions. [2020-10-14 21:20:38,073 INFO L78 Accepts]: Start accepts. Automaton has 46943 states and 56915 transitions. Word has length 255 [2020-10-14 21:20:38,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:20:38,074 INFO L479 AbstractCegarLoop]: Abstraction has 46943 states and 56915 transitions. [2020-10-14 21:20:38,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:20:38,075 INFO L276 IsEmpty]: Start isEmpty. Operand 46943 states and 56915 transitions. [2020-10-14 21:20:38,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-14 21:20:38,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:20:38,080 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:20:38,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:20:38,081 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:20:38,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:20:38,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1157344077, now seen corresponding path program 1 times [2020-10-14 21:20:38,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:20:38,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235331367] [2020-10-14 21:20:38,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:20:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:38,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:38,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:38,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 21:20:38,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:38,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-14 21:20:38,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:38,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:20:38,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-14 21:20:38,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 21:20:38,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:38,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:20:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:38,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:38,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:38,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:20:38,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:38,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:20:38,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:38,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:38,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:20:38,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:38,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:20:38,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:20:38,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:20:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:38,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:38,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:38,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:20:38,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:38,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 21:20:38,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:38,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:38,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:20:38,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:38,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:20:38,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:38,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:20:38,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:38,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:39,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:39,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 21:20:39,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 21:20:39,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:39,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:20:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 21:20:39,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-14 21:20:39,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235331367] [2020-10-14 21:20:39,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:20:39,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:20:39,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793926112] [2020-10-14 21:20:39,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:20:39,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:20:39,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:20:39,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:20:39,126 INFO L87 Difference]: Start difference. First operand 46943 states and 56915 transitions. Second operand 5 states. [2020-10-14 21:20:54,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:20:54,899 INFO L93 Difference]: Finished difference Result 112639 states and 140893 transitions. [2020-10-14 21:20:54,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:20:54,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 302 [2020-10-14 21:20:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:20:55,085 INFO L225 Difference]: With dead ends: 112639 [2020-10-14 21:20:55,086 INFO L226 Difference]: Without dead ends: 66469 [2020-10-14 21:20:55,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:20:55,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66469 states. [2020-10-14 21:20:56,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66469 to 65661. [2020-10-14 21:20:56,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65661 states. [2020-10-14 21:20:56,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65661 states to 65661 states and 79280 transitions. [2020-10-14 21:20:56,438 INFO L78 Accepts]: Start accepts. Automaton has 65661 states and 79280 transitions. Word has length 302 [2020-10-14 21:20:56,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:20:56,439 INFO L479 AbstractCegarLoop]: Abstraction has 65661 states and 79280 transitions. [2020-10-14 21:20:56,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:20:56,439 INFO L276 IsEmpty]: Start isEmpty. Operand 65661 states and 79280 transitions. [2020-10-14 21:20:56,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-14 21:20:56,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:20:56,452 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:20:56,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:20:56,452 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:20:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:20:56,453 INFO L82 PathProgramCache]: Analyzing trace with hash -2035364369, now seen corresponding path program 1 times [2020-10-14 21:20:56,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:20:56,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890423733] [2020-10-14 21:20:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:20:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:56,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:57,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:00,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:00,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:01,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:01,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 446 [2020-10-14 21:21:01,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:21:01,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4741 [2020-10-14 21:21:01,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:01,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:01,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:21:01,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 278 [2020-10-14 21:21:01,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 21:21:01,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:01,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:21:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:01,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:01,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:01,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:21:01,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:21:01,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:01,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:21:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:01,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:21:01,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:21:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:01,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:01,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:01,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:21:01,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:21:01,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:01,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:21:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:01,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:21:01,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:01,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:21:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:01,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:01,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:01,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 21:21:01,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:01,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 21:21:01,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:01,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:01,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:21:01,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:21:01,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-10-14 21:21:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:01,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:01,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:01,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:01,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 21:21:01,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:21:01,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 21:21:01,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:01,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:01,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:01,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 21:21:01,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:01,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-14 21:21:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:02,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:02,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:21:02,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:02,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 21:21:02,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:02,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:02,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:21:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:21:02,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:21:02,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 249 proven. 4 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2020-10-14 21:21:02,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890423733] [2020-10-14 21:21:02,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:21:02,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:21:02,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451605468] [2020-10-14 21:21:02,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:21:02,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:21:02,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:21:02,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:21:02,624 INFO L87 Difference]: Start difference. First operand 65661 states and 79280 transitions. Second operand 7 states. [2020-10-14 21:21:21,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:21:21,010 INFO L93 Difference]: Finished difference Result 155467 states and 193942 transitions. [2020-10-14 21:21:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:21:21,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 430 [2020-10-14 21:21:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:21:21,226 INFO L225 Difference]: With dead ends: 155467 [2020-10-14 21:21:21,227 INFO L226 Difference]: Without dead ends: 90579 [2020-10-14 21:21:21,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:21:21,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90579 states. [2020-10-14 21:21:24,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90579 to 89725. [2020-10-14 21:21:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89725 states. [2020-10-14 21:21:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89725 states to 89725 states and 107043 transitions. [2020-10-14 21:21:25,029 INFO L78 Accepts]: Start accepts. Automaton has 89725 states and 107043 transitions. Word has length 430 [2020-10-14 21:21:25,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:21:25,030 INFO L479 AbstractCegarLoop]: Abstraction has 89725 states and 107043 transitions. [2020-10-14 21:21:25,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:21:25,031 INFO L276 IsEmpty]: Start isEmpty. Operand 89725 states and 107043 transitions. [2020-10-14 21:21:25,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-10-14 21:21:25,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:21:25,048 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:21:25,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:21:25,049 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:21:25,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:21:25,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1240498647, now seen corresponding path program 1 times [2020-10-14 21:21:25,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:21:25,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255390347] [2020-10-14 21:21:25,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:21:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:25,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:25,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:26,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:30,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:30,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-14 21:21:30,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:21:30,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-14 21:21:30,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:30,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:30,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:21:30,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-14 21:21:30,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 21:21:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:30,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:21:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:30,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:30,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:30,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:21:30,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:30,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:21:30,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:30,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:21:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:30,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:21:30,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:30,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:21:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:30,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:30,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:21:30,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:30,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 21:21:30,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:30,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:21:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:21:30,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:21:30,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:21:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:30,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:30,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:30,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:21:30,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:30,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 21:21:30,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:30,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:30,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:21:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:21:30,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 21:21:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:30,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:30,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:30,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 21:21:30,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:30,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 21:21:30,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:30,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:30,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:21:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:21:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 21:21:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:30,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2020-10-14 21:21:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:30,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:30,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:21:30,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:30,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 21:21:30,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:30,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:30,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:21:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 21:21:30,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:21:30,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:21:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 275 proven. 68 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-14 21:21:31,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255390347] [2020-10-14 21:21:31,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:21:31,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:21:31,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372543687] [2020-10-14 21:21:31,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:21:31,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:21:31,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:21:31,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:21:31,071 INFO L87 Difference]: Start difference. First operand 89725 states and 107043 transitions. Second operand 7 states. [2020-10-14 21:21:53,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:21:53,343 INFO L93 Difference]: Finished difference Result 184021 states and 222056 transitions. [2020-10-14 21:21:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:21:53,347 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 466 [2020-10-14 21:21:53,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:21:53,700 INFO L225 Difference]: With dead ends: 184021 [2020-10-14 21:21:53,700 INFO L226 Difference]: Without dead ends: 95069 [2020-10-14 21:21:53,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:21:53,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95069 states. [2020-10-14 21:21:55,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95069 to 94009. [2020-10-14 21:21:55,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94009 states. [2020-10-14 21:21:55,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94009 states to 94009 states and 110734 transitions. [2020-10-14 21:21:55,973 INFO L78 Accepts]: Start accepts. Automaton has 94009 states and 110734 transitions. Word has length 466 [2020-10-14 21:21:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:21:55,974 INFO L479 AbstractCegarLoop]: Abstraction has 94009 states and 110734 transitions. [2020-10-14 21:21:55,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:21:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 94009 states and 110734 transitions. [2020-10-14 21:21:55,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-14 21:21:55,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:21:55,996 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:21:55,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:21:55,996 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:21:55,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:21:55,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1535693423, now seen corresponding path program 1 times [2020-10-14 21:21:55,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:21:55,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142876360] [2020-10-14 21:21:55,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:21:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:57,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:01,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:01,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 502 [2020-10-14 21:22:01,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:22:01,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5676 [2020-10-14 21:22:01,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:01,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-14 21:22:01,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-14 21:22:01,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:01,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:22:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:01,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:01,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:01,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:22:01,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:22:01,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:01,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:22:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:01,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:22:01,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:01,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:22:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:01,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:02,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:02,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:22:02,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:02,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 21:22:02,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:02,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:02,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:22:02,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:02,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:22:02,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:02,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:22:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:02,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:02,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:02,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 21:22:02,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:02,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 21:22:02,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:02,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:02,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:22:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:22:02,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 21:22:02,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:02,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-10-14 21:22:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:02,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:02,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:02,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 21:22:02,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:02,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 21:22:02,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:02,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:22:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:22:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-14 21:22:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:02,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-10-14 21:22:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:22:02,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:22:02,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:22:02,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:22:02,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:22:02,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 21:22:02,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:22:02,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:22:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:22:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-14 21:22:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:22:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:22:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 295 proven. 68 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-14 21:22:02,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142876360] [2020-10-14 21:22:02,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:22:02,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:22:02,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351674153] [2020-10-14 21:22:02,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:22:02,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:22:02,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:22:02,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:22:02,556 INFO L87 Difference]: Start difference. First operand 94009 states and 110734 transitions. Second operand 7 states.