/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_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:52:40,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:52:40,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:52:40,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:52:40,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:52:40,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:52:40,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:52:40,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:52:40,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:52:40,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:52:40,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:52:40,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:52:40,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:52:40,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:52:40,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:52:40,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:52:40,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:52:40,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:52:40,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:52:40,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:52:40,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:52:40,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:52:40,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:52:40,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:52:40,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:52:40,198 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:52:40,198 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:52:40,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:52:40,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:52:40,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:52:40,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:52:40,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:52:40,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:52:40,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:52:40,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:52:40,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:52:40,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:52:40,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:52:40,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:52:40,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:52:40,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:52:40,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 21:52:40,267 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:52:40,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:52:40,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:52:40,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:52:40,270 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:52:40,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:52:40,270 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:52:40,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:52:40,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:52:40,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:52:40,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:52:40,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:52:40,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:52:40,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:52:40,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:52:40,273 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:52:40,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:52:40,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:52:40,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:52:40,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:52:40,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:52:40,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:52:40,274 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:52:40,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:52:40,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:52:40,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:52:40,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:52:40,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:52:40,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:52:40,276 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:52:40,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:52:40,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:52:40,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:52:40,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:52:40,649 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:52:40,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label04.c [2020-10-14 21:52:40,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4c0d8acb/063eff2fc0254088a34e9d649e201856/FLAGe30976df4 [2020-10-14 21:52:41,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:52:41,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label04.c [2020-10-14 21:52:41,354 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4c0d8acb/063eff2fc0254088a34e9d649e201856/FLAGe30976df4 [2020-10-14 21:52:41,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c4c0d8acb/063eff2fc0254088a34e9d649e201856 [2020-10-14 21:52:41,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:52:41,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:52:41,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:52:41,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:52:41,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:52:41,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:52:41" (1/1) ... [2020-10-14 21:52:41,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c286c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:41, skipping insertion in model container [2020-10-14 21:52:41,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:52:41" (1/1) ... [2020-10-14 21:52:41,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:52:41,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:52:42,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:52:42,566 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:52:42,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:52:42,860 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:52:42,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:42 WrapperNode [2020-10-14 21:52:42,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:52:42,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:52:42,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:52:42,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:52:42,879 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:42" (1/1) ... [2020-10-14 21:52:42,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:42" (1/1) ... [2020-10-14 21:52:42,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:42" (1/1) ... [2020-10-14 21:52:42,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:42" (1/1) ... [2020-10-14 21:52:43,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:42" (1/1) ... [2020-10-14 21:52:43,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:42" (1/1) ... [2020-10-14 21:52:43,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:42" (1/1) ... [2020-10-14 21:52:43,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:52:43,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:52:43,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:52:43,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:52:43,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:42" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:52:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:52:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:52:43,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:52:43,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:52:43,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:52:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:52:43,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:52:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:52:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:52:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:52:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:52:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:52:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:52:49,059 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:52:49,060 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:52:49,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:52:49 BoogieIcfgContainer [2020-10-14 21:52:49,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:52:49,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:52:49,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:52:49,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:52:49,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:52:41" (1/3) ... [2020-10-14 21:52:49,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d57d997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:52:49, skipping insertion in model container [2020-10-14 21:52:49,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:52:42" (2/3) ... [2020-10-14 21:52:49,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d57d997 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:52:49, skipping insertion in model container [2020-10-14 21:52:49,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:52:49" (3/3) ... [2020-10-14 21:52:49,076 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label04.c [2020-10-14 21:52:49,088 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:52:49,097 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:52:49,113 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:52:49,141 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:52:49,141 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:52:49,142 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:52:49,142 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:52:49,142 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:52:49,142 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:52:49,142 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:52:49,142 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:52:49,170 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 21:52:49,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 21:52:49,178 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:52:49,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:52:49,180 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:52:49,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:52:49,188 INFO L82 PathProgramCache]: Analyzing trace with hash -2134000803, now seen corresponding path program 1 times [2020-10-14 21:52:49,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:52:49,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924429233] [2020-10-14 21:52:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:52:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:49,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:49,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:49,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 21:52:49,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:49,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-14 21:52:49,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:49,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:52:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:52:49,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 21:52:49,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:52:49,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:52:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:49,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:49,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:49,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:52:49,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:49,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:52:49,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:49,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:52:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:52:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:52:49,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:52:49,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924429233] [2020-10-14 21:52:49,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:52:49,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:52:49,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680966594] [2020-10-14 21:52:49,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:52:49,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:52:49,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:52:49,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:52:49,924 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 21:52:55,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:52:55,982 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 21:52:55,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:52:55,984 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-14 21:52:55,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:52:56,006 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 21:52:56,006 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 21:52:56,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:52:56,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 21:52:56,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 21:52:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 21:52:56,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 21:52:56,125 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 37 [2020-10-14 21:52:56,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:52:56,126 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 21:52:56,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:52:56,126 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 21:52:56,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-14 21:52:56,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:52:56,132 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:52:56,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:52:56,132 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:52:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:52:56,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1961730458, now seen corresponding path program 1 times [2020-10-14 21:52:56,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:52:56,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081368659] [2020-10-14 21:52:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:52:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:56,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:57,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:57,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-14 21:52:57,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:52:57,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1490 [2020-10-14 21:52:57,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:57,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:57,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:52:57,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:52:57,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:52:57,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:52:57,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:52:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:57,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:57,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:57,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:52:57,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:52:57,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:57,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:57,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:52:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:52:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:52:57,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:52:57,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:52:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:52:57,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:52:57,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:52:57,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:52:57,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:52:57,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 21:52:57,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:52:57,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:52:57,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:52:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:52:57,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:52:57,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 21:52:58,116 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:52:58,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081368659] [2020-10-14 21:52:58,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:52:58,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:52:58,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112323434] [2020-10-14 21:52:58,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:52:58,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:52:58,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:52:58,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:52:58,122 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 7 states. [2020-10-14 21:53:07,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:07,875 INFO L93 Difference]: Finished difference Result 2046 states and 3016 transitions. [2020-10-14 21:53:07,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:53:07,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-14 21:53:07,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:07,885 INFO L225 Difference]: With dead ends: 2046 [2020-10-14 21:53:07,886 INFO L226 Difference]: Without dead ends: 1361 [2020-10-14 21:53:07,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:53:07,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-10-14 21:53:07,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1337. [2020-10-14 21:53:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1337 states. [2020-10-14 21:53:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1730 transitions. [2020-10-14 21:53:07,960 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1730 transitions. Word has length 106 [2020-10-14 21:53:07,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:07,961 INFO L479 AbstractCegarLoop]: Abstraction has 1337 states and 1730 transitions. [2020-10-14 21:53:07,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:53:07,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1730 transitions. [2020-10-14 21:53:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-14 21:53:07,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:07,982 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:53:07,983 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:53:07,983 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:07,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:07,984 INFO L82 PathProgramCache]: Analyzing trace with hash -819121034, now seen corresponding path program 1 times [2020-10-14 21:53:07,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:07,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845979312] [2020-10-14 21:53:07,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:08,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:08,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:08,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:09,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:10,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:11,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:11,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-14 21:53:11,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:53:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3553 [2020-10-14 21:53:11,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:11,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:53:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-14 21:53:11,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:11,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:11,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:11,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:11,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:11,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:11,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:53:11,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:11,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:11,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:11,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:11,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:11,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:11,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:11,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:53:11,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:11,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 21:53:11,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:11,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:11,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:53:11,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:11,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:53:11,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:11,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:12,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:12,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:53:12,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:12,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 21:53:12,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:12,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:53:12,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 61 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:53:12,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845979312] [2020-10-14 21:53:12,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:12,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:53:12,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769661531] [2020-10-14 21:53:12,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:53:12,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:12,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:53:12,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:53:12,256 INFO L87 Difference]: Start difference. First operand 1337 states and 1730 transitions. Second operand 8 states. [2020-10-14 21:53:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:21,948 INFO L93 Difference]: Finished difference Result 3983 states and 5166 transitions. [2020-10-14 21:53:21,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:53:21,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 211 [2020-10-14 21:53:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:21,974 INFO L225 Difference]: With dead ends: 3983 [2020-10-14 21:53:21,974 INFO L226 Difference]: Without dead ends: 2652 [2020-10-14 21:53:21,978 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:53:21,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2652 states. [2020-10-14 21:53:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2652 to 2582. [2020-10-14 21:53:22,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2582 states. [2020-10-14 21:53:22,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2582 states to 2582 states and 3120 transitions. [2020-10-14 21:53:22,050 INFO L78 Accepts]: Start accepts. Automaton has 2582 states and 3120 transitions. Word has length 211 [2020-10-14 21:53:22,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:22,051 INFO L479 AbstractCegarLoop]: Abstraction has 2582 states and 3120 transitions. [2020-10-14 21:53:22,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:53:22,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2582 states and 3120 transitions. [2020-10-14 21:53:22,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-14 21:53:22,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:22,056 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:53:22,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:53:22,056 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:22,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:22,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1764129716, now seen corresponding path program 1 times [2020-10-14 21:53:22,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:22,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146697332] [2020-10-14 21:53:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:22,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:22,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:22,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:27,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:27,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 329 [2020-10-14 21:53:27,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:53:27,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-14 21:53:27,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:27,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:53:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:27,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 21:53:27,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:27,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:27,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:27,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:27,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:27,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:27,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:53:27,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:27,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:27,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:27,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:27,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:27,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:27,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:53:27,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:27,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-14 21:53:27,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:27,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:27,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:27,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:27,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:53:27,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:27,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 21:53:27,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:27,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:27,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:27,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:53:27,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:27,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 21:53:27,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:27,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:53:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:53:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:53:27,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:28,245 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 60 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:53:28,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146697332] [2020-10-14 21:53:28,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:28,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:53:28,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780320991] [2020-10-14 21:53:28,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:53:28,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:28,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:53:28,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:53:28,250 INFO L87 Difference]: Start difference. First operand 2582 states and 3120 transitions. Second operand 7 states. [2020-10-14 21:53:36,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:36,041 INFO L93 Difference]: Finished difference Result 4927 states and 6005 transitions. [2020-10-14 21:53:36,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:53:36,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-14 21:53:36,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:36,071 INFO L225 Difference]: With dead ends: 4927 [2020-10-14 21:53:36,071 INFO L226 Difference]: Without dead ends: 2658 [2020-10-14 21:53:36,077 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 21:53:36,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2020-10-14 21:53:36,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2586. [2020-10-14 21:53:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2586 states. [2020-10-14 21:53:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 3120 transitions. [2020-10-14 21:53:36,158 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 3120 transitions. Word has length 317 [2020-10-14 21:53:36,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:36,160 INFO L479 AbstractCegarLoop]: Abstraction has 2586 states and 3120 transitions. [2020-10-14 21:53:36,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:53:36,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 3120 transitions. [2020-10-14 21:53:36,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-10-14 21:53:36,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:36,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:53:36,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:53:36,168 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:36,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:36,169 INFO L82 PathProgramCache]: Analyzing trace with hash 94458239, now seen corresponding path program 1 times [2020-10-14 21:53:36,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:36,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019142123] [2020-10-14 21:53:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:36,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:36,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:36,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:37,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:39,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:39,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-14 21:53:39,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:53:39,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2820 [2020-10-14 21:53:39,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:39,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:53:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:39,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 338 [2020-10-14 21:53:39,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:53:39,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:39,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:39,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:39,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:39,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 21:53:39,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:39,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:39,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:39,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:53:39,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:39,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:39,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:53:39,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:53:39,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-14 21:53:39,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:39,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:39,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:53:39,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:39,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:53:39,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:39,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:39,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:40,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:40,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:53:40,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:53:40,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-14 21:53:40,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:40,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:40,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:40,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 21:53:40,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 52 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-14 21:53:40,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019142123] [2020-10-14 21:53:40,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:40,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:53:40,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513126364] [2020-10-14 21:53:40,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:53:40,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:40,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:53:40,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:53:40,605 INFO L87 Difference]: Start difference. First operand 2586 states and 3120 transitions. Second operand 7 states. [2020-10-14 21:53:53,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:53,117 INFO L93 Difference]: Finished difference Result 5506 states and 7114 transitions. [2020-10-14 21:53:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:53:53,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 332 [2020-10-14 21:53:53,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:53,139 INFO L225 Difference]: With dead ends: 5506 [2020-10-14 21:53:53,140 INFO L226 Difference]: Without dead ends: 4171 [2020-10-14 21:53:53,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:53:53,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2020-10-14 21:53:53,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 3527. [2020-10-14 21:53:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3527 states. [2020-10-14 21:53:53,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 4447 transitions. [2020-10-14 21:53:53,247 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 4447 transitions. Word has length 332 [2020-10-14 21:53:53,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:53,248 INFO L479 AbstractCegarLoop]: Abstraction has 3527 states and 4447 transitions. [2020-10-14 21:53:53,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:53:53,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 4447 transitions. [2020-10-14 21:53:53,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-14 21:53:53,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:53,258 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:53:53,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:53:53,258 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:53,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:53,259 INFO L82 PathProgramCache]: Analyzing trace with hash -751842048, now seen corresponding path program 1 times [2020-10-14 21:53:53,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:53,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334610135] [2020-10-14 21:53:53,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:53,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:53,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:53,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:54,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:54,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 433 [2020-10-14 21:53:54,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:53:54,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1503 [2020-10-14 21:53:54,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:54,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:54,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:53:54,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 21:53:54,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:53:55,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:55,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:55,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:55,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:55,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:55,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:53:55,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:55,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:53:55,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:55,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:53:55,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:55,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:55,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:55,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:55,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:53:55,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:55,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-14 21:53:55,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:55,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:55,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:53:55,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:53:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:55,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:55,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:55,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:53:55,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:55,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 21:53:55,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:55,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:55,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:53:55,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:53:55,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334610135] [2020-10-14 21:53:55,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:55,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:53:55,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341964869] [2020-10-14 21:53:55,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:53:55,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:55,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:53:55,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:53:55,845 INFO L87 Difference]: Start difference. First operand 3527 states and 4447 transitions. Second operand 7 states. [2020-10-14 21:54:09,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:09,635 INFO L93 Difference]: Finished difference Result 8708 states and 11442 transitions. [2020-10-14 21:54:09,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:54:09,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 421 [2020-10-14 21:54:09,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:09,661 INFO L225 Difference]: With dead ends: 8708 [2020-10-14 21:54:09,661 INFO L226 Difference]: Without dead ends: 5494 [2020-10-14 21:54:09,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 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 21:54:09,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5494 states. [2020-10-14 21:54:09,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5494 to 5453. [2020-10-14 21:54:09,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5453 states. [2020-10-14 21:54:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5453 states to 5453 states and 6656 transitions. [2020-10-14 21:54:09,802 INFO L78 Accepts]: Start accepts. Automaton has 5453 states and 6656 transitions. Word has length 421 [2020-10-14 21:54:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:09,803 INFO L479 AbstractCegarLoop]: Abstraction has 5453 states and 6656 transitions. [2020-10-14 21:54:09,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:54:09,804 INFO L276 IsEmpty]: Start isEmpty. Operand 5453 states and 6656 transitions. [2020-10-14 21:54:09,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-14 21:54:09,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:09,815 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:54:09,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:54:09,816 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:09,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:09,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1236439318, now seen corresponding path program 1 times [2020-10-14 21:54:09,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:09,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956624644] [2020-10-14 21:54:09,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:09,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:10,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:11,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:12,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:12,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:14,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:14,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:14,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-14 21:54:14,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 21:54:14,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-14 21:54:14,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:14,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:14,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:54:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 21:54:14,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-14 21:54:14,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:15,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:15,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:15,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:15,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:15,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:54:15,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:15,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:15,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:15,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:15,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:15,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:15,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:15,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:54:15,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:15,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 21:54:15,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:15,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:15,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:54:15,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:15,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:54:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:15,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:15,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:15,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:15,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:54:15,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-14 21:54:15,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:15,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:15,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:54:15,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:15,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 21:54:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:15,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:15,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:15,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-14 21:54:15,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:15,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 21:54:15,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:15,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:15,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:54:15,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 274 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-14 21:54:15,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956624644] [2020-10-14 21:54:15,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:15,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:15,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413343920] [2020-10-14 21:54:15,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:15,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:15,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:15,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:15,963 INFO L87 Difference]: Start difference. First operand 5453 states and 6656 transitions. Second operand 7 states. [2020-10-14 21:54:29,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:29,301 INFO L93 Difference]: Finished difference Result 11925 states and 15252 transitions. [2020-10-14 21:54:29,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:54:29,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 442 [2020-10-14 21:54:29,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:29,332 INFO L225 Difference]: With dead ends: 11925 [2020-10-14 21:54:29,332 INFO L226 Difference]: Without dead ends: 7089 [2020-10-14 21:54:29,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:54:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7089 states. [2020-10-14 21:54:29,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7089 to 7071. [2020-10-14 21:54:29,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7071 states. [2020-10-14 21:54:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7071 states to 7071 states and 8500 transitions. [2020-10-14 21:54:29,500 INFO L78 Accepts]: Start accepts. Automaton has 7071 states and 8500 transitions. Word has length 442 [2020-10-14 21:54:29,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:29,501 INFO L479 AbstractCegarLoop]: Abstraction has 7071 states and 8500 transitions. [2020-10-14 21:54:29,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:54:29,501 INFO L276 IsEmpty]: Start isEmpty. Operand 7071 states and 8500 transitions. [2020-10-14 21:54:29,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-10-14 21:54:29,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:29,520 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:54:29,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:54:29,520 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:29,521 INFO L82 PathProgramCache]: Analyzing trace with hash 882543439, now seen corresponding path program 1 times [2020-10-14 21:54:29,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:29,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663983102] [2020-10-14 21:54:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:29,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:30,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:31,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:33,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:33,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-14 21:54:33,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:54:33,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3789 [2020-10-14 21:54:33,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:33,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:54:33,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:54:33,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:33,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:33,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:33,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:33,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:33,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:54:33,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:33,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:33,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:33,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:33,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:33,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:33,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:54:33,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:33,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 21:54:33,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:33,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:33,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:54:33,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:33,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:54:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:33,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:33,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:54:33,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:33,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-14 21:54:33,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:33,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:33,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:33,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:33,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:54:33,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:34,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 21:54:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:34,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:34,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:54:34,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 21:54:34,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:34,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:34,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 21:54:34,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:34,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 202 proven. 81 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 21:54:34,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663983102] [2020-10-14 21:54:34,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:34,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:34,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407018723] [2020-10-14 21:54:34,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:34,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:34,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:34,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:34,391 INFO L87 Difference]: Start difference. First operand 7071 states and 8500 transitions. Second operand 7 states. [2020-10-14 21:54:48,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:48,015 INFO L93 Difference]: Finished difference Result 16423 states and 19715 transitions. [2020-10-14 21:54:48,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:54:48,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 504 [2020-10-14 21:54:48,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:48,052 INFO L225 Difference]: With dead ends: 16423 [2020-10-14 21:54:48,052 INFO L226 Difference]: Without dead ends: 9665 [2020-10-14 21:54:48,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 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 21:54:48,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9665 states. [2020-10-14 21:54:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9665 to 9292. [2020-10-14 21:54:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9292 states. [2020-10-14 21:54:48,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9292 states to 9292 states and 10936 transitions. [2020-10-14 21:54:48,267 INFO L78 Accepts]: Start accepts. Automaton has 9292 states and 10936 transitions. Word has length 504 [2020-10-14 21:54:48,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:48,268 INFO L479 AbstractCegarLoop]: Abstraction has 9292 states and 10936 transitions. [2020-10-14 21:54:48,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:54:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand 9292 states and 10936 transitions. [2020-10-14 21:54:48,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2020-10-14 21:54:48,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:48,291 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:54:48,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:54:48,292 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:48,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:48,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1420911593, now seen corresponding path program 1 times [2020-10-14 21:54:48,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:48,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826412599] [2020-10-14 21:54:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:48,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:48,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:49,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:50,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:50,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-14 21:54:50,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:54:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2117 [2020-10-14 21:54:50,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:50,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:54:50,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:54:50,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:50,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:50,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:50,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:50,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:50,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:54:50,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:50,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:50,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:50,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:50,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:50,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:50,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:50,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:50,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:54:50,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 21:54:50,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:50,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:50,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:50,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:50,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:54:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:50,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:50,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:54:50,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:50,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:54:50,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:50,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:50,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:50,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:54:50,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:50,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:54:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:51,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:51,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:54:51,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:51,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 21:54:51,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:51,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:51,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:54:51,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:51,270 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:54:51,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826412599] [2020-10-14 21:54:51,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:51,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:51,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297179620] [2020-10-14 21:54:51,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:51,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:51,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:51,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:51,274 INFO L87 Difference]: Start difference. First operand 9292 states and 10936 transitions. Second operand 7 states. [2020-10-14 21:55:03,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:03,278 INFO L93 Difference]: Finished difference Result 18629 states and 22060 transitions. [2020-10-14 21:55:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:55:03,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 516 [2020-10-14 21:55:03,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:03,309 INFO L225 Difference]: With dead ends: 18629 [2020-10-14 21:55:03,309 INFO L226 Difference]: Without dead ends: 9650 [2020-10-14 21:55:03,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:03,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9650 states. [2020-10-14 21:55:03,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9650 to 8967. [2020-10-14 21:55:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8967 states. [2020-10-14 21:55:03,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8967 states to 8967 states and 10017 transitions. [2020-10-14 21:55:03,499 INFO L78 Accepts]: Start accepts. Automaton has 8967 states and 10017 transitions. Word has length 516 [2020-10-14 21:55:03,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:03,500 INFO L479 AbstractCegarLoop]: Abstraction has 8967 states and 10017 transitions. [2020-10-14 21:55:03,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:03,501 INFO L276 IsEmpty]: Start isEmpty. Operand 8967 states and 10017 transitions. [2020-10-14 21:55:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-14 21:55:03,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:03,513 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:03,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:55:03,513 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:03,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:03,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1528343038, now seen corresponding path program 1 times [2020-10-14 21:55:03,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:03,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105123749] [2020-10-14 21:55:03,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:03,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:04,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:07,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:07,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-14 21:55:07,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:55:07,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3484 [2020-10-14 21:55:07,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:07,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:55:07,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:55:07,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:07,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:07,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:07,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:07,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:07,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:07,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:55:07,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:07,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:07,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:07,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:07,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:07,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:07,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:07,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:55:07,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:07,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-14 21:55:07,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:07,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:07,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:07,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:07,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:55:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:07,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:07,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:07,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:07,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:07,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 21:55:07,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:07,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:55:07,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:07,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:55:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:07,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:07,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:07,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:55:07,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:07,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 21:55:07,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:07,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:07,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:55:07,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 289 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:55:07,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105123749] [2020-10-14 21:55:07,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:07,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:55:07,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799062166] [2020-10-14 21:55:07,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:07,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:07,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:07,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:07,796 INFO L87 Difference]: Start difference. First operand 8967 states and 10017 transitions. Second operand 7 states. [2020-10-14 21:55:18,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:18,129 INFO L93 Difference]: Finished difference Result 19273 states and 21924 transitions. [2020-10-14 21:55:18,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:55:18,132 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 534 [2020-10-14 21:55:18,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:18,176 INFO L225 Difference]: With dead ends: 19273 [2020-10-14 21:55:18,176 INFO L226 Difference]: Without dead ends: 10930 [2020-10-14 21:55:18,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:18,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10930 states. [2020-10-14 21:55:18,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10930 to 10560. [2020-10-14 21:55:18,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10560 states. [2020-10-14 21:55:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10560 states to 10560 states and 11789 transitions. [2020-10-14 21:55:18,406 INFO L78 Accepts]: Start accepts. Automaton has 10560 states and 11789 transitions. Word has length 534 [2020-10-14 21:55:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:18,407 INFO L479 AbstractCegarLoop]: Abstraction has 10560 states and 11789 transitions. [2020-10-14 21:55:18,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 10560 states and 11789 transitions. [2020-10-14 21:55:18,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2020-10-14 21:55:18,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:18,418 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 21:55:18,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:55:18,419 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:18,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:18,419 INFO L82 PathProgramCache]: Analyzing trace with hash 605839917, now seen corresponding path program 1 times [2020-10-14 21:55:18,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:18,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1312509507] [2020-10-14 21:55:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:18,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:19,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:20,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:20,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:20,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 576 [2020-10-14 21:55:20,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:55:20,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2392 [2020-10-14 21:55:20,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:20,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:55:20,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:55:20,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 21:55:20,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:21,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:21,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:21,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:21,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:21,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:55:21,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:21,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:21,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:21,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:21,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:21,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:21,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:21,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:55:21,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:21,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 21:55:21,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:21,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:21,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:21,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:21,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:21,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:55:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:21,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:21,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:21,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:21,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 21:55:21,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:21,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:21,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:55:21,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:21,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:55:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:21,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:21,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:21,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 21:55:21,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:21,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 21:55:21,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:21,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:21,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 21:55:21,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 293 proven. 31 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 21:55:21,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1312509507] [2020-10-14 21:55:21,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:21,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:55:21,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724380891] [2020-10-14 21:55:21,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:55:21,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:21,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:55:21,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:55:21,646 INFO L87 Difference]: Start difference. First operand 10560 states and 11789 transitions. Second operand 6 states. [2020-10-14 21:55:35,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:35,580 INFO L93 Difference]: Finished difference Result 20998 states and 24116 transitions. [2020-10-14 21:55:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:55:35,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 562 [2020-10-14 21:55:35,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:35,625 INFO L225 Difference]: With dead ends: 20998 [2020-10-14 21:55:35,626 INFO L226 Difference]: Without dead ends: 13550 [2020-10-14 21:55:35,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:55:35,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13550 states. [2020-10-14 21:55:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13550 to 13198. [2020-10-14 21:55:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13198 states. [2020-10-14 21:55:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13198 states to 13198 states and 14981 transitions. [2020-10-14 21:55:35,886 INFO L78 Accepts]: Start accepts. Automaton has 13198 states and 14981 transitions. Word has length 562 [2020-10-14 21:55:35,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:35,888 INFO L479 AbstractCegarLoop]: Abstraction has 13198 states and 14981 transitions. [2020-10-14 21:55:35,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:55:35,888 INFO L276 IsEmpty]: Start isEmpty. Operand 13198 states and 14981 transitions. [2020-10-14 21:55:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2020-10-14 21:55:35,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:35,909 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 21:55:35,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:55:35,910 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:35,911 INFO L82 PathProgramCache]: Analyzing trace with hash 189433168, now seen corresponding path program 1 times [2020-10-14 21:55:35,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:35,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561855917] [2020-10-14 21:55:35,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:36,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:36,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:36,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:39,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:41,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:41,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 651 [2020-10-14 21:55:41,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:55:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-14 21:55:41,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:41,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:55:41,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-14 21:55:41,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:41,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:41,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:41,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:41,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:41,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:41,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:55:41,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:41,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:41,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:41,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:41,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:41,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:41,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:55:41,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:41,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 21:55:41,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:41,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:41,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:41,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:55:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:41,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:41,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:41,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:41,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:41,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 21:55:41,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:41,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:41,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:55:41,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:41,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:55:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:41,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:41,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:41,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 21:55:41,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:41,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 21:55:41,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:41,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:41,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 21:55:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:41,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 506 [2020-10-14 21:55:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:41,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:41,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:41,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:55:41,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:41,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 21:55:41,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:41,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 21:55:41,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:41,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 329 proven. 99 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2020-10-14 21:55:41,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561855917] [2020-10-14 21:55:41,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:41,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:55:41,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621065642] [2020-10-14 21:55:41,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:41,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:41,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:41,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:41,921 INFO L87 Difference]: Start difference. First operand 13198 states and 14981 transitions. Second operand 7 states. [2020-10-14 21:55:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:55,333 INFO L93 Difference]: Finished difference Result 26286 states and 31463 transitions. [2020-10-14 21:55:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:55:55,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 635 [2020-10-14 21:55:55,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:55,385 INFO L225 Difference]: With dead ends: 26286 [2020-10-14 21:55:55,386 INFO L226 Difference]: Without dead ends: 16200 [2020-10-14 21:55:55,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:55,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16200 states. [2020-10-14 21:55:55,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16200 to 16084. [2020-10-14 21:55:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16084 states. [2020-10-14 21:55:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16084 states to 16084 states and 18516 transitions. [2020-10-14 21:55:55,749 INFO L78 Accepts]: Start accepts. Automaton has 16084 states and 18516 transitions. Word has length 635 [2020-10-14 21:55:55,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:55,750 INFO L479 AbstractCegarLoop]: Abstraction has 16084 states and 18516 transitions. [2020-10-14 21:55:55,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:55,750 INFO L276 IsEmpty]: Start isEmpty. Operand 16084 states and 18516 transitions. [2020-10-14 21:55:55,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2020-10-14 21:55:55,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:55,770 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 21:55:55,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 21:55:55,770 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:55,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:55,771 INFO L82 PathProgramCache]: Analyzing trace with hash 974504185, now seen corresponding path program 1 times [2020-10-14 21:55:55,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:55,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195857577] [2020-10-14 21:55:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:56,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:56,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:56,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:58,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:58,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:01,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:01,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 678 [2020-10-14 21:56:01,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:56:01,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-10-14 21:56:01,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:01,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:56:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-14 21:56:01,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:01,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:01,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:01,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:01,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:56:01,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:01,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:01,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:01,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:01,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:01,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:01,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:01,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:56:01,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:01,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 21:56:01,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:01,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:01,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:56:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:01,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:01,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:01,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:56:01,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:01,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 21:56:01,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:01,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:01,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:56:01,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:01,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:56:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:01,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:02,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:02,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-14 21:56:02,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:02,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 21:56:02,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:02,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:02,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-14 21:56:02,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:02,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-14 21:56:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:02,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:02,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:02,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:56:02,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 21:56:02,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:02,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:02,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:02,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 21:56:02,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:02,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 366 proven. 99 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2020-10-14 21:56:02,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195857577] [2020-10-14 21:56:02,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:02,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:56:02,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908632740] [2020-10-14 21:56:02,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:56:02,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:02,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:56:02,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:56:02,436 INFO L87 Difference]: Start difference. First operand 16084 states and 18516 transitions. Second operand 7 states. [2020-10-14 21:56:19,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:19,854 INFO L93 Difference]: Finished difference Result 34030 states and 40270 transitions. [2020-10-14 21:56:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:56:19,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 662 [2020-10-14 21:56:19,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:19,911 INFO L225 Difference]: With dead ends: 34030 [2020-10-14 21:56:19,911 INFO L226 Difference]: Without dead ends: 21058 [2020-10-14 21:56:19,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:56:19,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21058 states. [2020-10-14 21:56:20,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21058 to 20430. [2020-10-14 21:56:20,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20430 states. [2020-10-14 21:56:20,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20430 states to 20430 states and 23784 transitions. [2020-10-14 21:56:20,301 INFO L78 Accepts]: Start accepts. Automaton has 20430 states and 23784 transitions. Word has length 662 [2020-10-14 21:56:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:20,302 INFO L479 AbstractCegarLoop]: Abstraction has 20430 states and 23784 transitions. [2020-10-14 21:56:20,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 20430 states and 23784 transitions. [2020-10-14 21:56:20,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 700 [2020-10-14 21:56:20,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:20,332 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:56:20,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 21:56:20,332 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:20,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:20,333 INFO L82 PathProgramCache]: Analyzing trace with hash -304411803, now seen corresponding path program 1 times [2020-10-14 21:56:20,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:20,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290075709] [2020-10-14 21:56:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:20,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:21,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:24,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:25,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:25,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:25,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 715 [2020-10-14 21:56:25,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:56:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-14 21:56:25,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:25,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 21:56:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 21:56:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 21:56:25,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:25,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:25,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:25,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:25,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:25,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:56:25,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:25,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:25,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:25,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:25,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:25,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:25,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:25,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:26,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:26,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:56:26,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:26,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-14 21:56:26,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:26,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 21:56:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:26,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:56:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:26,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:26,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:56:26,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:26,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 21:56:26,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:26,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:56:26,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:26,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:56:26,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:56:26,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:56:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:26,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:26,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:26,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-14 21:56:26,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:26,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 21:56:26,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:26,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:26,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-14 21:56:26,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:27,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 570 [2020-10-14 21:56:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:27,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:27,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:27,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:56:27,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 21:56:27,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:27,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 21:56:27,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:27,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 506 proven. 198 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2020-10-14 21:56:27,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290075709] [2020-10-14 21:56:27,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:27,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 21:56:27,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97745215] [2020-10-14 21:56:27,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 21:56:27,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:27,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 21:56:27,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:56:27,709 INFO L87 Difference]: Start difference. First operand 20430 states and 23784 transitions. Second operand 10 states.