/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/Problem15_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:01:44,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:01:44,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:01:44,136 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:01:44,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:01:44,143 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:01:44,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:01:44,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:01:44,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:01:44,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:01:44,154 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:01:44,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:01:44,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:01:44,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:01:44,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:01:44,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:01:44,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:01:44,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:01:44,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:01:44,173 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:01:44,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:01:44,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:01:44,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:01:44,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:01:44,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:01:44,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:01:44,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:01:44,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:01:44,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:01:44,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:01:44,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:01:44,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:01:44,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:01:44,203 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:01:44,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:01:44,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:01:44,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:01:44,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:01:44,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:01:44,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:01:44,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:01:44,208 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:01:44,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:01:44,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:01:44,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:01:44,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:01:44,248 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:01:44,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:01:44,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:01:44,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:01:44,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:01:44,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:01:44,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:01:44,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:01:44,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:01:44,251 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:01:44,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:01:44,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:01:44,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:01:44,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:01:44,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:01:44,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:01:44,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:01:44,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:01:44,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:01:44,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:01:44,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:01:44,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:01:44,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:01:44,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:01:44,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:01:44,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:01:44,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:01:44,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:01:44,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:01:44,558 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:01:44,558 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:01:44,559 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label40.c [2020-10-14 22:01:44,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b826ba543/7294bede63b74b0db87695acc7824a50/FLAG621cbfaec [2020-10-14 22:01:45,245 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:01:45,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label40.c [2020-10-14 22:01:45,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b826ba543/7294bede63b74b0db87695acc7824a50/FLAG621cbfaec [2020-10-14 22:01:45,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b826ba543/7294bede63b74b0db87695acc7824a50 [2020-10-14 22:01:45,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:01:45,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:01:45,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:01:45,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:01:45,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:01:45,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:01:45" (1/1) ... [2020-10-14 22:01:45,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:45, skipping insertion in model container [2020-10-14 22:01:45,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:01:45" (1/1) ... [2020-10-14 22:01:45,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:01:45,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:01:46,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:01:46,606 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:01:46,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:01:46,962 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:01:46,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:46 WrapperNode [2020-10-14 22:01:46,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:01:46,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:01:46,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:01:46,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:01:46,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:46" (1/1) ... [2020-10-14 22:01:46,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:46" (1/1) ... [2020-10-14 22:01:47,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:46" (1/1) ... [2020-10-14 22:01:47,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:46" (1/1) ... [2020-10-14 22:01:47,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:46" (1/1) ... [2020-10-14 22:01:47,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:46" (1/1) ... [2020-10-14 22:01:47,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:46" (1/1) ... [2020-10-14 22:01:47,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:01:47,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:01:47,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:01:47,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:01:47,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:01:47,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:01:47,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:01:47,246 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:01:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:01:47,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:01:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:01:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:01:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:01:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:01:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:01:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:01:47,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:01:47,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:01:53,202 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:01:53,203 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:01:53,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:01:53 BoogieIcfgContainer [2020-10-14 22:01:53,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:01:53,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:01:53,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:01:53,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:01:53,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:01:45" (1/3) ... [2020-10-14 22:01:53,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2981cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:01:53, skipping insertion in model container [2020-10-14 22:01:53,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:01:46" (2/3) ... [2020-10-14 22:01:53,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a2981cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:01:53, skipping insertion in model container [2020-10-14 22:01:53,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:01:53" (3/3) ... [2020-10-14 22:01:53,217 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label40.c [2020-10-14 22:01:53,227 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:01:53,235 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:01:53,248 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:01:53,275 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:01:53,275 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:01:53,276 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:01:53,276 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:01:53,276 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:01:53,276 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:01:53,276 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:01:53,276 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:01:53,305 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 22:01:53,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 22:01:53,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:01:53,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:01:53,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:01:53,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:01:53,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1190948056, now seen corresponding path program 1 times [2020-10-14 22:01:53,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:01:53,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070750586] [2020-10-14 22:01:53,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:01:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:53,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:53,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:53,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 22:01:53,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:53,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-14 22:01:53,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:53,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:01:53,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:01:53,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 22:01:53,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:01:53,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:01:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:53,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:01:53,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:01:53,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:01:53,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:01:53,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 22:01:53,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:01:53,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:01:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:01:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:01:53,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:01:53,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:01:54,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:01:54,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070750586] [2020-10-14 22:01:54,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:01:54,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:01:54,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124266939] [2020-10-14 22:01:54,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:01:54,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:01:54,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:01:54,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:01:54,048 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 22:01:59,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:01:59,564 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 22:01:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:01:59,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-14 22:01:59,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:01:59,590 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 22:01:59,591 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 22:01:59,602 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 22:01:59,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 22:01:59,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 22:01:59,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 22:01:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 22:01:59,712 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 32 [2020-10-14 22:01:59,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:01:59,712 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 22:01:59,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:01:59,713 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 22:01:59,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-14 22:01:59,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:01:59,720 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:01:59,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:01:59,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:01:59,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:01:59,723 INFO L82 PathProgramCache]: Analyzing trace with hash 679417420, now seen corresponding path program 1 times [2020-10-14 22:01:59,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:01:59,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192104978] [2020-10-14 22:01:59,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:01:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:01:59,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:00,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:00,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:00,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 22:02:00,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:02:00,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1168 [2020-10-14 22:02:00,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:00,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:00,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:02:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:02:00,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 22:02:00,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:00,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:01,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:01,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:01,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:01,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:01,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:02:01,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:01,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:01,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:01,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:02:01,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:01,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:01,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:01,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:01,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:02:01,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:01,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 22:02:01,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:01,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 22:02:01,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:01,276 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:02:01,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192104978] [2020-10-14 22:02:01,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:02:01,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:02:01,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549615604] [2020-10-14 22:02:01,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:02:01,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:01,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:02:01,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:02:01,281 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 7 states. [2020-10-14 22:02:08,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:08,167 INFO L93 Difference]: Finished difference Result 2047 states and 3015 transitions. [2020-10-14 22:02:08,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:02:08,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 101 [2020-10-14 22:02:08,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:08,177 INFO L225 Difference]: With dead ends: 2047 [2020-10-14 22:02:08,177 INFO L226 Difference]: Without dead ends: 1362 [2020-10-14 22:02:08,180 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 22:02:08,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2020-10-14 22:02:08,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1336. [2020-10-14 22:02:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-14 22:02:08,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1729 transitions. [2020-10-14 22:02:08,234 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1729 transitions. Word has length 101 [2020-10-14 22:02:08,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:08,235 INFO L479 AbstractCegarLoop]: Abstraction has 1336 states and 1729 transitions. [2020-10-14 22:02:08,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:02:08,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1729 transitions. [2020-10-14 22:02:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-14 22:02:08,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:08,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:02:08,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:02:08,245 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:08,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:08,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1976934134, now seen corresponding path program 1 times [2020-10-14 22:02:08,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:08,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911725686] [2020-10-14 22:02:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:08,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:08,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:08,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-14 22:02:08,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:08,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-14 22:02:08,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:08,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:08,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:08,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 22:02:08,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 22:02:08,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:08,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:08,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:08,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:08,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:08,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:02:08,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:08,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:02:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:08,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:02:08,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:08,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:08,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:08,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:08,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:02:08,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:08,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 22:02:08,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:08,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:08,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:08,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 22:02:08,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:02:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:02:08,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911725686] [2020-10-14 22:02:08,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:08,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:02:08,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043627814] [2020-10-14 22:02:08,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:02:08,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:08,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:02:08,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:02:08,841 INFO L87 Difference]: Start difference. First operand 1336 states and 1729 transitions. Second operand 5 states. [2020-10-14 22:02:17,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:17,766 INFO L93 Difference]: Finished difference Result 3310 states and 4431 transitions. [2020-10-14 22:02:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:02:17,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-14 22:02:17,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:17,782 INFO L225 Difference]: With dead ends: 3310 [2020-10-14 22:02:17,783 INFO L226 Difference]: Without dead ends: 1980 [2020-10-14 22:02:17,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:02:17,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2020-10-14 22:02:17,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1976. [2020-10-14 22:02:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-14 22:02:17,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2462 transitions. [2020-10-14 22:02:17,849 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2462 transitions. Word has length 127 [2020-10-14 22:02:17,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:17,850 INFO L479 AbstractCegarLoop]: Abstraction has 1976 states and 2462 transitions. [2020-10-14 22:02:17,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:02:17,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2462 transitions. [2020-10-14 22:02:17,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-14 22:02:17,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:17,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 22:02:17,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:02:17,853 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:17,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:17,854 INFO L82 PathProgramCache]: Analyzing trace with hash -972585659, now seen corresponding path program 1 times [2020-10-14 22:02:17,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:17,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2130534766] [2020-10-14 22:02:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:17,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:18,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:18,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:19,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:20,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:20,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:20,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 22:02:20,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:02:20,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2808 [2020-10-14 22:02:20,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:20,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:20,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:02:20,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:02:20,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-14 22:02:20,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 22:02:20,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:20,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:20,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:20,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:20,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:20,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:02:20,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:20,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:20,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:20,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:02:20,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:20,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:20,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:20,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:20,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 22:02:20,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:20,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:02:20,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:20,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 22:02:20,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:21,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 22:02:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:21,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:21,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:21,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 22:02:21,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:21,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:02:21,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:21,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:21,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:21,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:21,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 22:02:21,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-14 22:02:21,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2130534766] [2020-10-14 22:02:21,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:21,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 22:02:21,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290395313] [2020-10-14 22:02:21,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:02:21,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:21,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:02:21,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:02:21,243 INFO L87 Difference]: Start difference. First operand 1976 states and 2462 transitions. Second operand 7 states. [2020-10-14 22:02:27,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:27,936 INFO L93 Difference]: Finished difference Result 5599 states and 7130 transitions. [2020-10-14 22:02:27,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:02:27,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-10-14 22:02:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:27,959 INFO L225 Difference]: With dead ends: 5599 [2020-10-14 22:02:27,959 INFO L226 Difference]: Without dead ends: 2982 [2020-10-14 22:02:27,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:02:27,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2020-10-14 22:02:28,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 2924. [2020-10-14 22:02:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2924 states. [2020-10-14 22:02:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2924 states to 2924 states and 3387 transitions. [2020-10-14 22:02:28,040 INFO L78 Accepts]: Start accepts. Automaton has 2924 states and 3387 transitions. Word has length 199 [2020-10-14 22:02:28,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:28,041 INFO L479 AbstractCegarLoop]: Abstraction has 2924 states and 3387 transitions. [2020-10-14 22:02:28,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:02:28,041 INFO L276 IsEmpty]: Start isEmpty. Operand 2924 states and 3387 transitions. [2020-10-14 22:02:28,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 22:02:28,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:28,044 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:02:28,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:02:28,044 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:28,045 INFO L82 PathProgramCache]: Analyzing trace with hash 271080541, now seen corresponding path program 1 times [2020-10-14 22:02:28,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:28,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668747695] [2020-10-14 22:02:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:28,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:28,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:28,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-14 22:02:28,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:28,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-14 22:02:28,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:28,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:28,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-14 22:02:28,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 22:02:28,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:28,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:28,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:28,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:28,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:28,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:28,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:02:28,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:28,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:02:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:28,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:02:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 22:02:28,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:28,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:29,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:29,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-14 22:02:29,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-14 22:02:29,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:29,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:29,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:29,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-14 22:02:29,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:02:29,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668747695] [2020-10-14 22:02:29,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:29,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:02:29,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580944156] [2020-10-14 22:02:29,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:02:29,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:29,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:02:29,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:02:29,240 INFO L87 Difference]: Start difference. First operand 2924 states and 3387 transitions. Second operand 5 states. [2020-10-14 22:02:36,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:36,965 INFO L93 Difference]: Finished difference Result 8383 states and 9879 transitions. [2020-10-14 22:02:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:02:36,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-14 22:02:36,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:36,994 INFO L225 Difference]: With dead ends: 8383 [2020-10-14 22:02:36,994 INFO L226 Difference]: Without dead ends: 5465 [2020-10-14 22:02:37,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:02:37,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5465 states. [2020-10-14 22:02:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5465 to 5443. [2020-10-14 22:02:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5443 states. [2020-10-14 22:02:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5443 states to 5443 states and 6180 transitions. [2020-10-14 22:02:37,127 INFO L78 Accepts]: Start accepts. Automaton has 5443 states and 6180 transitions. Word has length 269 [2020-10-14 22:02:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:37,128 INFO L479 AbstractCegarLoop]: Abstraction has 5443 states and 6180 transitions. [2020-10-14 22:02:37,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:02:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5443 states and 6180 transitions. [2020-10-14 22:02:37,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-14 22:02:37,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:37,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:02:37,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:02:37,137 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:37,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:37,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1741587351, now seen corresponding path program 1 times [2020-10-14 22:02:37,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:37,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756538346] [2020-10-14 22:02:37,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:37,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:37,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:41,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:41,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-14 22:02:41,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:02:41,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4604 [2020-10-14 22:02:41,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:41,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:02:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:02:41,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 22:02:41,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:41,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:41,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:41,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:41,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:41,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:41,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:02:41,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:41,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:02:41,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:02:41,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:42,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:42,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 22:02:42,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-14 22:02:42,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:42,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 22:02:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:42,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 22:02:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:42,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:42,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:42,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 22:02:42,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:42,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:02:42,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:42,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:42,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:02:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 22:02:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:02:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 50 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 22:02:43,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756538346] [2020-10-14 22:02:43,274 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:43,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:02:43,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961706077] [2020-10-14 22:02:43,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:02:43,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:43,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:02:43,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:02:43,278 INFO L87 Difference]: Start difference. First operand 5443 states and 6180 transitions. Second operand 7 states. [2020-10-14 22:02:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:02:49,249 INFO L93 Difference]: Finished difference Result 11273 states and 12796 transitions. [2020-10-14 22:02:49,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:02:49,256 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-14 22:02:49,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:02:49,280 INFO L225 Difference]: With dead ends: 11273 [2020-10-14 22:02:49,280 INFO L226 Difference]: Without dead ends: 5836 [2020-10-14 22:02:49,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:02:49,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2020-10-14 22:02:49,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5778. [2020-10-14 22:02:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5778 states. [2020-10-14 22:02:49,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5778 states to 5778 states and 6535 transitions. [2020-10-14 22:02:49,442 INFO L78 Accepts]: Start accepts. Automaton has 5778 states and 6535 transitions. Word has length 317 [2020-10-14 22:02:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:02:49,443 INFO L479 AbstractCegarLoop]: Abstraction has 5778 states and 6535 transitions. [2020-10-14 22:02:49,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:02:49,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5778 states and 6535 transitions. [2020-10-14 22:02:49,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2020-10-14 22:02:49,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:02:49,455 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:02:49,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:02:49,455 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:02:49,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:02:49,456 INFO L82 PathProgramCache]: Analyzing trace with hash -424168630, now seen corresponding path program 1 times [2020-10-14 22:02:49,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:02:49,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133331420] [2020-10-14 22:02:49,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:02:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:49,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:50,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:51,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:51,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-14 22:02:51,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:02:51,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1601 [2020-10-14 22:02:51,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:51,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:51,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:51,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 22:02:51,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 22:02:51,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:51,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:02:51,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:51,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:51,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:51,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:02:51,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:51,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:02:51,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:51,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:51,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:02:51,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:51,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:02:51,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:51,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:02:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:51,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:51,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:51,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:02:51,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:51,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-14 22:02:51,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:51,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:02:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:02:51,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:02:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:02:51,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:02:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:02:51,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:02:52,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:02:52,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 22:02:52,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:02:52,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 22:02:52,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:02:52,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:02:52,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:02:52,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:02:52,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:02:52,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:02:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:02:52,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133331420] [2020-10-14 22:02:52,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:02:52,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:02:52,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333741437] [2020-10-14 22:02:52,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:02:52,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:02:52,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:02:52,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:02:52,366 INFO L87 Difference]: Start difference. First operand 5778 states and 6535 transitions. Second operand 8 states. [2020-10-14 22:03:01,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:01,734 INFO L93 Difference]: Finished difference Result 15692 states and 18621 transitions. [2020-10-14 22:03:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:03:01,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 403 [2020-10-14 22:03:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:01,776 INFO L225 Difference]: With dead ends: 15692 [2020-10-14 22:03:01,777 INFO L226 Difference]: Without dead ends: 10227 [2020-10-14 22:03:01,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:03:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10227 states. [2020-10-14 22:03:01,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10227 to 10199. [2020-10-14 22:03:02,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10199 states. [2020-10-14 22:03:02,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10199 states to 10199 states and 11791 transitions. [2020-10-14 22:03:02,018 INFO L78 Accepts]: Start accepts. Automaton has 10199 states and 11791 transitions. Word has length 403 [2020-10-14 22:03:02,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:02,018 INFO L479 AbstractCegarLoop]: Abstraction has 10199 states and 11791 transitions. [2020-10-14 22:03:02,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:03:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 10199 states and 11791 transitions. [2020-10-14 22:03:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-14 22:03:02,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:02,027 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:02,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:03:02,028 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:02,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:02,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1758357776, now seen corresponding path program 1 times [2020-10-14 22:03:02,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:02,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [808588633] [2020-10-14 22:03:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:02,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:02,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:04,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:04,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 429 [2020-10-14 22:03:04,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:03:04,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2824 [2020-10-14 22:03:04,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:04,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:04,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 22:03:04,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 22:03:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:03:05,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:05,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:05,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:05,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:05,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:05,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:03:05,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:05,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:05,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:05,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:05,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:05,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:05,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 22:03:05,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-14 22:03:05,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:05,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:05,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 22:03:05,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:05,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:03:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:05,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:05,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:05,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:03:05,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-14 22:03:05,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:05,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:03:05,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 158 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:03:06,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [808588633] [2020-10-14 22:03:06,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:06,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:03:06,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835961999] [2020-10-14 22:03:06,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:06,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:06,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:06,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:06,220 INFO L87 Difference]: Start difference. First operand 10199 states and 11791 transitions. Second operand 7 states. [2020-10-14 22:03:14,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:14,482 INFO L93 Difference]: Finished difference Result 21114 states and 24440 transitions. [2020-10-14 22:03:14,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:03:14,488 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 417 [2020-10-14 22:03:14,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:14,542 INFO L225 Difference]: With dead ends: 21114 [2020-10-14 22:03:14,542 INFO L226 Difference]: Without dead ends: 11228 [2020-10-14 22:03:14,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:03:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11228 states. [2020-10-14 22:03:14,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11228 to 10260. [2020-10-14 22:03:14,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10260 states. [2020-10-14 22:03:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10260 states to 10260 states and 11887 transitions. [2020-10-14 22:03:14,769 INFO L78 Accepts]: Start accepts. Automaton has 10260 states and 11887 transitions. Word has length 417 [2020-10-14 22:03:14,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:14,770 INFO L479 AbstractCegarLoop]: Abstraction has 10260 states and 11887 transitions. [2020-10-14 22:03:14,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:03:14,770 INFO L276 IsEmpty]: Start isEmpty. Operand 10260 states and 11887 transitions. [2020-10-14 22:03:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-14 22:03:14,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:14,780 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:14,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:03:14,780 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:14,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:14,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1166701144, now seen corresponding path program 1 times [2020-10-14 22:03:14,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:14,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068865888] [2020-10-14 22:03:14,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:15,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:15,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:15,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 441 [2020-10-14 22:03:15,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 744 [2020-10-14 22:03:15,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:15,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:03:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 22:03:15,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:15,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:15,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:15,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:15,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:15,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:15,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:03:15,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:15,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:15,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:15,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:15,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:15,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:15,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:15,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:15,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:03:15,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:15,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 22:03:15,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:15,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:15,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:15,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:15,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:15,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:03:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:16,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:16,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:03:16,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:16,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 22:03:16,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:16,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:16,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:16,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:16,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:03:16,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-14 22:03:16,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068865888] [2020-10-14 22:03:16,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:16,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:03:16,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491146271] [2020-10-14 22:03:16,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:03:16,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:16,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:03:16,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:03:16,259 INFO L87 Difference]: Start difference. First operand 10260 states and 11887 transitions. Second operand 5 states. [2020-10-14 22:03:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:22,649 INFO L93 Difference]: Finished difference Result 20525 states and 23851 transitions. [2020-10-14 22:03:22,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:03:22,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 429 [2020-10-14 22:03:22,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:22,684 INFO L225 Difference]: With dead ends: 20525 [2020-10-14 22:03:22,684 INFO L226 Difference]: Without dead ends: 10578 [2020-10-14 22:03:22,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 22:03:22,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2020-10-14 22:03:22,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 10562. [2020-10-14 22:03:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10562 states. [2020-10-14 22:03:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10562 states to 10562 states and 11805 transitions. [2020-10-14 22:03:22,922 INFO L78 Accepts]: Start accepts. Automaton has 10562 states and 11805 transitions. Word has length 429 [2020-10-14 22:03:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:22,923 INFO L479 AbstractCegarLoop]: Abstraction has 10562 states and 11805 transitions. [2020-10-14 22:03:22,923 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:03:22,923 INFO L276 IsEmpty]: Start isEmpty. Operand 10562 states and 11805 transitions. [2020-10-14 22:03:22,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-10-14 22:03:22,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:22,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:22,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:03:22,935 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:22,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1831647058, now seen corresponding path program 1 times [2020-10-14 22:03:22,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:22,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527464196] [2020-10-14 22:03:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:23,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:23,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:23,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 477 [2020-10-14 22:03:23,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:23,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-14 22:03:23,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:23,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:23,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:23,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 445 [2020-10-14 22:03:23,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 22:03:23,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:24,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:24,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:24,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:24,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:24,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:24,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:03:24,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:24,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:24,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:24,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:24,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:24,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:24,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:24,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:24,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:24,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:03:24,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:24,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 22:03:24,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:24,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:24,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:24,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:03:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:24,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:24,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-14 22:03:24,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:24,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 22:03:24,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:24,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:24,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-14 22:03:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:24,662 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-14 22:03:24,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527464196] [2020-10-14 22:03:24,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:24,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:03:24,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318830700] [2020-10-14 22:03:24,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:03:24,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:24,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:03:24,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:03:24,666 INFO L87 Difference]: Start difference. First operand 10562 states and 11805 transitions. Second operand 5 states. [2020-10-14 22:03:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:33,438 INFO L93 Difference]: Finished difference Result 23618 states and 26599 transitions. [2020-10-14 22:03:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:03:33,440 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 465 [2020-10-14 22:03:33,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:33,498 INFO L225 Difference]: With dead ends: 23618 [2020-10-14 22:03:33,498 INFO L226 Difference]: Without dead ends: 13369 [2020-10-14 22:03:33,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 22:03:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13369 states. [2020-10-14 22:03:33,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13369 to 12731. [2020-10-14 22:03:33,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12731 states. [2020-10-14 22:03:33,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12731 states to 12731 states and 14217 transitions. [2020-10-14 22:03:33,809 INFO L78 Accepts]: Start accepts. Automaton has 12731 states and 14217 transitions. Word has length 465 [2020-10-14 22:03:33,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:33,811 INFO L479 AbstractCegarLoop]: Abstraction has 12731 states and 14217 transitions. [2020-10-14 22:03:33,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:03:33,811 INFO L276 IsEmpty]: Start isEmpty. Operand 12731 states and 14217 transitions. [2020-10-14 22:03:33,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2020-10-14 22:03:33,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:33,835 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:33,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:03:33,836 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:33,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:33,836 INFO L82 PathProgramCache]: Analyzing trace with hash 218816791, now seen corresponding path program 1 times [2020-10-14 22:03:33,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:33,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357578232] [2020-10-14 22:03:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:34,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:34,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:35,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:36,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:36,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 521 [2020-10-14 22:03:36,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:03:36,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2787 [2020-10-14 22:03:36,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:36,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:03:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:03:36,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:36,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:36,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:36,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:36,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:36,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:03:36,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:36,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:36,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:36,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:36,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:36,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:37,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:37,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:37,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:03:37,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 22:03:37,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:37,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:37,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:37,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:37,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:03:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:37,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:37,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:03:37,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:37,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 22:03:37,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:37,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:03:37,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:37,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:03:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:37,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:37,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:37,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:03:37,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:37,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 22:03:37,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:37,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:37,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 22:03:37,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:03:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:03:37,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357578232] [2020-10-14 22:03:37,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:37,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:03:37,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797587974] [2020-10-14 22:03:37,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:03:37,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:37,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:03:37,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:03:37,854 INFO L87 Difference]: Start difference. First operand 12731 states and 14217 transitions. Second operand 7 states. [2020-10-14 22:03:44,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:03:44,094 INFO L93 Difference]: Finished difference Result 27363 states and 30683 transitions. [2020-10-14 22:03:44,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:03:44,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 507 [2020-10-14 22:03:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:03:44,135 INFO L225 Difference]: With dead ends: 27363 [2020-10-14 22:03:44,135 INFO L226 Difference]: Without dead ends: 14945 [2020-10-14 22:03:44,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:03:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14945 states. [2020-10-14 22:03:44,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14945 to 14924. [2020-10-14 22:03:44,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14924 states. [2020-10-14 22:03:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14924 states to 14924 states and 16578 transitions. [2020-10-14 22:03:44,396 INFO L78 Accepts]: Start accepts. Automaton has 14924 states and 16578 transitions. Word has length 507 [2020-10-14 22:03:44,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:03:44,397 INFO L479 AbstractCegarLoop]: Abstraction has 14924 states and 16578 transitions. [2020-10-14 22:03:44,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:03:44,398 INFO L276 IsEmpty]: Start isEmpty. Operand 14924 states and 16578 transitions. [2020-10-14 22:03:44,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2020-10-14 22:03:44,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:03:44,410 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:03:44,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:03:44,410 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:03:44,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:03:44,411 INFO L82 PathProgramCache]: Analyzing trace with hash 586982105, now seen corresponding path program 1 times [2020-10-14 22:03:44,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:03:44,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943560915] [2020-10-14 22:03:44,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:03:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:44,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:45,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:45,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:46,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:48,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:49,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:49,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 534 [2020-10-14 22:03:49,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 22:03:49,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 22:03:49,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:49,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:49,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:03:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 22:03:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 22:03:49,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:49,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:03:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:49,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:49,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:03:49,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:49,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:03:49,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:49,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:03:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:49,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:03:49,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:49,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:03:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:49,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:49,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:03:49,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:49,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-14 22:03:49,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:49,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:03:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:03:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 22:03:49,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:50,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:03:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:50,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:50,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:03:50,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:03:50,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 22:03:50,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:50,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:50,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:03:50,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:50,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:03:50,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:50,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:03:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:03:50,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:50,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:03:50,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:03:50,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:03:50,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:03:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 22:03:50,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:03:50,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:03:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:03:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:03:50,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 22:03:50,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:03:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 355 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 22:03:50,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943560915] [2020-10-14 22:03:50,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:03:50,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 22:03:50,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066283] [2020-10-14 22:03:50,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 22:03:50,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:03:50,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 22:03:50,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:03:50,785 INFO L87 Difference]: Start difference. First operand 14924 states and 16578 transitions. Second operand 10 states. [2020-10-14 22:04:01,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:01,826 INFO L93 Difference]: Finished difference Result 38908 states and 44029 transitions. [2020-10-14 22:04:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 22:04:01,828 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 520 [2020-10-14 22:04:01,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:01,887 INFO L225 Difference]: With dead ends: 38908 [2020-10-14 22:04:01,887 INFO L226 Difference]: Without dead ends: 24297 [2020-10-14 22:04:01,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-10-14 22:04:01,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24297 states. [2020-10-14 22:04:02,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24297 to 22718. [2020-10-14 22:04:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22718 states. [2020-10-14 22:04:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22718 states to 22718 states and 25352 transitions. [2020-10-14 22:04:02,430 INFO L78 Accepts]: Start accepts. Automaton has 22718 states and 25352 transitions. Word has length 520 [2020-10-14 22:04:02,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:02,431 INFO L479 AbstractCegarLoop]: Abstraction has 22718 states and 25352 transitions. [2020-10-14 22:04:02,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 22:04:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 22718 states and 25352 transitions. [2020-10-14 22:04:02,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-14 22:04:02,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:02,443 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:02,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:04:02,443 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:02,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:02,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1293363463, now seen corresponding path program 1 times [2020-10-14 22:04:02,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:02,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45134280] [2020-10-14 22:04:02,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:02,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:02,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:03,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:05,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:05,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 571 [2020-10-14 22:04:05,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:04:05,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2798 [2020-10-14 22:04:05,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:05,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:04:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 22:04:05,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:05,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:05,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:05,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:05,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:05,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:05,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:05,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:04:05,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:05,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:05,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:05,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:05,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:05,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:05,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:04:05,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:05,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 22:04:05,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:05,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:05,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:05,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:05,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:05,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:05,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:04:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:05,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:05,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:05,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:04:05,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-14 22:04:05,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:05,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:04:05,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:05,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:04:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:05,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:05,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 22:04:05,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:05,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 22:04:05,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:05,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:05,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 22:04:05,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 311 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 22:04:06,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45134280] [2020-10-14 22:04:06,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:06,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:06,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244508461] [2020-10-14 22:04:06,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:06,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:06,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:06,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:06,232 INFO L87 Difference]: Start difference. First operand 22718 states and 25352 transitions. Second operand 7 states. [2020-10-14 22:04:16,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:16,178 INFO L93 Difference]: Finished difference Result 52260 states and 58886 transitions. [2020-10-14 22:04:16,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:04:16,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 557 [2020-10-14 22:04:16,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:16,256 INFO L225 Difference]: With dead ends: 52260 [2020-10-14 22:04:16,256 INFO L226 Difference]: Without dead ends: 26436 [2020-10-14 22:04:16,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:04:16,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26436 states. [2020-10-14 22:04:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26436 to 25466. [2020-10-14 22:04:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25466 states. [2020-10-14 22:04:16,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25466 states to 25466 states and 28101 transitions. [2020-10-14 22:04:16,980 INFO L78 Accepts]: Start accepts. Automaton has 25466 states and 28101 transitions. Word has length 557 [2020-10-14 22:04:16,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:16,981 INFO L479 AbstractCegarLoop]: Abstraction has 25466 states and 28101 transitions. [2020-10-14 22:04:16,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:04:16,981 INFO L276 IsEmpty]: Start isEmpty. Operand 25466 states and 28101 transitions. [2020-10-14 22:04:16,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2020-10-14 22:04:16,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:16,996 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:16,997 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:04:16,997 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:16,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:16,997 INFO L82 PathProgramCache]: Analyzing trace with hash 54262114, now seen corresponding path program 1 times [2020-10-14 22:04:16,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:16,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146302520] [2020-10-14 22:04:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:17,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:19,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:20,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:20,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 685 [2020-10-14 22:04:20,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:04:20,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3483 [2020-10-14 22:04:20,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:20,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-14 22:04:20,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 22:04:20,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:20,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:20,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:20,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:20,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:20,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:20,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:04:20,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:20,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:20,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:04:20,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:20,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:20,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:20,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:04:20,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:20,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 22:04:20,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:20,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:20,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:20,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:04:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:21,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:21,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:21,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 22:04:21,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 22:04:21,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:21,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:21,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:21,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:21,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 22:04:21,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:21,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 22:04:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:21,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:21,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:21,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:04:21,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:21,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 22:04:21,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:21,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:21,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:04:21,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:21,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-14 22:04:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:21,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:21,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:04:21,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:21,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 22:04:21,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:21,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 22:04:21,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:21,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 267 proven. 77 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2020-10-14 22:04:21,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146302520] [2020-10-14 22:04:21,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:21,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:21,811 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560745973] [2020-10-14 22:04:21,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:21,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:21,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:21,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:21,813 INFO L87 Difference]: Start difference. First operand 25466 states and 28101 transitions. Second operand 7 states. [2020-10-14 22:04:31,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:31,567 INFO L93 Difference]: Finished difference Result 56242 states and 62728 transitions. [2020-10-14 22:04:31,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:04:31,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 669 [2020-10-14 22:04:31,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:31,613 INFO L225 Difference]: With dead ends: 56242 [2020-10-14 22:04:31,613 INFO L226 Difference]: Without dead ends: 32010 [2020-10-14 22:04:31,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:04:31,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32010 states. [2020-10-14 22:04:32,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32010 to 29208. [2020-10-14 22:04:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29208 states. [2020-10-14 22:04:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29208 states to 29208 states and 32379 transitions. [2020-10-14 22:04:32,043 INFO L78 Accepts]: Start accepts. Automaton has 29208 states and 32379 transitions. Word has length 669 [2020-10-14 22:04:32,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:32,044 INFO L479 AbstractCegarLoop]: Abstraction has 29208 states and 32379 transitions. [2020-10-14 22:04:32,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:04:32,044 INFO L276 IsEmpty]: Start isEmpty. Operand 29208 states and 32379 transitions. [2020-10-14 22:04:32,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 682 [2020-10-14 22:04:32,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:32,058 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:32,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 22:04:32,059 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:32,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:32,059 INFO L82 PathProgramCache]: Analyzing trace with hash -594656274, now seen corresponding path program 1 times [2020-10-14 22:04:32,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:32,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974598895] [2020-10-14 22:04:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:32,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:32,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:36,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:36,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 697 [2020-10-14 22:04:36,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:04:36,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4291 [2020-10-14 22:04:36,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:36,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:36,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:36,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 585 [2020-10-14 22:04:36,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:04:36,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:36,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:36,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:36,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:36,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:04:36,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:36,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:36,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:36,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:36,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:36,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:36,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:36,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:04:36,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:36,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:04:36,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:36,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:36,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:36,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:36,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:04:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:36,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:36,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:36,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:04:36,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:36,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:04:36,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:36,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:36,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:36,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:36,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:36,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:04:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:36,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:36,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:36,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-14 22:04:36,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:36,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 22:04:36,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:36,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:36,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 22:04:36,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:36,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-14 22:04:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:36,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:37,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:37,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:04:37,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:37,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 22:04:37,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:37,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:37,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:37,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 22:04:37,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 730 backedges. 335 proven. 2 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2020-10-14 22:04:37,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974598895] [2020-10-14 22:04:37,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:37,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:37,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180211172] [2020-10-14 22:04:37,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:37,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:37,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:37,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:37,318 INFO L87 Difference]: Start difference. First operand 29208 states and 32379 transitions. Second operand 7 states. [2020-10-14 22:04:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:04:46,276 INFO L93 Difference]: Finished difference Result 63087 states and 70283 transitions. [2020-10-14 22:04:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:04:46,278 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 681 [2020-10-14 22:04:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:04:46,335 INFO L225 Difference]: With dead ends: 63087 [2020-10-14 22:04:46,335 INFO L226 Difference]: Without dead ends: 34192 [2020-10-14 22:04:46,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:04:46,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34192 states. [2020-10-14 22:04:46,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34192 to 32304. [2020-10-14 22:04:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32304 states. [2020-10-14 22:04:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32304 states to 32304 states and 35919 transitions. [2020-10-14 22:04:46,837 INFO L78 Accepts]: Start accepts. Automaton has 32304 states and 35919 transitions. Word has length 681 [2020-10-14 22:04:46,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:04:46,838 INFO L479 AbstractCegarLoop]: Abstraction has 32304 states and 35919 transitions. [2020-10-14 22:04:46,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:04:46,838 INFO L276 IsEmpty]: Start isEmpty. Operand 32304 states and 35919 transitions. [2020-10-14 22:04:46,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2020-10-14 22:04:46,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:04:46,853 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:04:46,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 22:04:46,853 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:04:46,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:04:46,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1367089142, now seen corresponding path program 1 times [2020-10-14 22:04:46,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:04:46,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032577760] [2020-10-14 22:04:46,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:04:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:47,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:47,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:47,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:52,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:52,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 733 [2020-10-14 22:04:52,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:04:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 22:04:52,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:52,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 22:04:52,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 22:04:52,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:52,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:04:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:52,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:52,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:04:52,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:52,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:04:52,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:52,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:04:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:52,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:52,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:04:52,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:52,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 22:04:52,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:52,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:52,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:04:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:52,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:52,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:52,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:04:52,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:52,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 22:04:52,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:52,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:04:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:04:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 22:04:52,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:52,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:04:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:52,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:52,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:52,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 22:04:52,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:52,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 22:04:52,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:52,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:52,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:04:52,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:04:52,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 22:04:52,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:52,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-14 22:04:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:52,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:52,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:52,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 22:04:52,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:52,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:04:52,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:52,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 22:04:52,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:52,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:52,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2020-10-14 22:04:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:04:52,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:04:52,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:04:52,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:04:52,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:04:52,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 22:04:52,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:04:52,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:04:52,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:04:52,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-14 22:04:52,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:04:52,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:04:53,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 379 proven. 154 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2020-10-14 22:04:53,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032577760] [2020-10-14 22:04:53,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:04:53,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:04:53,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076081725] [2020-10-14 22:04:53,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:04:53,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:04:53,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:04:53,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:04:53,320 INFO L87 Difference]: Start difference. First operand 32304 states and 35919 transitions. Second operand 7 states. [2020-10-14 22:05:03,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:03,513 INFO L93 Difference]: Finished difference Result 71396 states and 80398 transitions. [2020-10-14 22:05:03,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:05:03,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 715 [2020-10-14 22:05:03,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:03,582 INFO L225 Difference]: With dead ends: 71396 [2020-10-14 22:05:03,582 INFO L226 Difference]: Without dead ends: 39405 [2020-10-14 22:05:03,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:05:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39405 states. [2020-10-14 22:05:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39405 to 37519. [2020-10-14 22:05:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37519 states. [2020-10-14 22:05:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37519 states to 37519 states and 42119 transitions. [2020-10-14 22:05:04,062 INFO L78 Accepts]: Start accepts. Automaton has 37519 states and 42119 transitions. Word has length 715 [2020-10-14 22:05:04,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:04,063 INFO L479 AbstractCegarLoop]: Abstraction has 37519 states and 42119 transitions. [2020-10-14 22:05:04,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:05:04,063 INFO L276 IsEmpty]: Start isEmpty. Operand 37519 states and 42119 transitions. [2020-10-14 22:05:04,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 718 [2020-10-14 22:05:04,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:04,077 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:04,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 22:05:04,077 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:04,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:04,078 INFO L82 PathProgramCache]: Analyzing trace with hash -260691231, now seen corresponding path program 1 times [2020-10-14 22:05:04,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:04,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014923869] [2020-10-14 22:05:04,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:05,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:06,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:06,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 733 [2020-10-14 22:05:06,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:05:06,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2660 [2020-10-14 22:05:06,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:06,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:06,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:06,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 701 [2020-10-14 22:05:06,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 22:05:06,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:07,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:07,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:07,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:05:07,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:07,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:07,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:07,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:05:07,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:07,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 22:05:07,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:07,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:07,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:07,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:05:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:05:07,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:07,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 22:05:07,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:07,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:07,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:07,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:07,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 22:05:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-14 22:05:07,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:07,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 22:05:07,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:07,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:07,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:07,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 615 [2020-10-14 22:05:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:07,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:07,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 22:05:07,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:07,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 22:05:07,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:07,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:07,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 22:05:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:05:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 105 proven. 4 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2020-10-14 22:05:08,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014923869] [2020-10-14 22:05:08,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:08,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:05:08,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022068232] [2020-10-14 22:05:08,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:05:08,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:08,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:05:08,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:05:08,358 INFO L87 Difference]: Start difference. First operand 37519 states and 42119 transitions. Second operand 5 states. [2020-10-14 22:05:16,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:05:16,772 INFO L93 Difference]: Finished difference Result 74754 states and 83954 transitions. [2020-10-14 22:05:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:05:16,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 717 [2020-10-14 22:05:16,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:05:16,823 INFO L225 Difference]: With dead ends: 74754 [2020-10-14 22:05:16,823 INFO L226 Difference]: Without dead ends: 37521 [2020-10-14 22:05:16,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 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 22:05:16,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37521 states. [2020-10-14 22:05:17,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37521 to 37517. [2020-10-14 22:05:17,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37517 states. [2020-10-14 22:05:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37517 states to 37517 states and 42088 transitions. [2020-10-14 22:05:17,303 INFO L78 Accepts]: Start accepts. Automaton has 37517 states and 42088 transitions. Word has length 717 [2020-10-14 22:05:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:05:17,303 INFO L479 AbstractCegarLoop]: Abstraction has 37517 states and 42088 transitions. [2020-10-14 22:05:17,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:05:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 37517 states and 42088 transitions. [2020-10-14 22:05:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2020-10-14 22:05:17,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:05:17,324 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:05:17,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 22:05:17,327 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:05:17,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:05:17,327 INFO L82 PathProgramCache]: Analyzing trace with hash -249568552, now seen corresponding path program 1 times [2020-10-14 22:05:17,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:05:17,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88090297] [2020-10-14 22:05:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:05:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:17,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:18,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:18,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:22,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:22,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 820 [2020-10-14 22:05:22,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:05:22,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 22:05:22,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:22,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:22,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:05:22,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 578 [2020-10-14 22:05:22,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 241 [2020-10-14 22:05:22,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:22,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:05:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:22,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:22,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:22,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:05:22,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:22,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:05:22,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:22,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:22,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:22,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:22,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:22,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:05:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:22,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:22,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:22,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 22:05:22,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:22,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 22:05:22,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:22,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:22,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:22,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:22,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 22:05:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:22,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:22,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:22,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 22:05:22,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 22:05:22,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:22,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:05:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:05:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:22,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 22:05:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:23,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:23,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:23,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 22:05:23,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:23,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 22:05:23,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:23,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:05:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:05:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 22:05:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:23,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-14 22:05:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:23,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:23,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:23,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:05:23,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 22:05:23,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:23,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:23,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 22:05:23,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:23,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2020-10-14 22:05:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:05:23,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:05:23,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:05:23,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-14 22:05:23,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:05:23,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 22:05:23,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:05:23,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:05:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:05:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:05:23,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-14 22:05:23,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:05:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1149 backedges. 724 proven. 51 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2020-10-14 22:05:23,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88090297] [2020-10-14 22:05:23,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:05:23,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:05:23,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049718290] [2020-10-14 22:05:23,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:05:23,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:05:23,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:05:23,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:05:23,812 INFO L87 Difference]: Start difference. First operand 37517 states and 42088 transitions. Second operand 7 states.