/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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:53:06,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:53:06,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:53:06,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:53:06,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:53:06,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:53:06,809 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:53:06,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:53:06,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:53:06,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:53:06,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:53:06,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:53:06,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:53:06,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:53:06,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:53:06,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:53:06,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:53:06,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:53:06,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:53:06,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:53:06,841 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:53:06,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:53:06,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:53:06,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:53:06,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:53:06,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:53:06,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:53:06,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:53:06,852 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:53:06,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:53:06,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:53:06,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:53:06,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:53:06,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:53:06,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:53:06,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:53:06,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:53:06,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:53:06,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:53:06,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:53:06,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:53:06,867 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 21:53:06,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:53:06,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:53:06,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:53:06,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:53:06,910 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:53:06,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:53:06,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:53:06,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:53:06,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:53:06,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:53:06,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:53:06,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:53:06,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:53:06,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:53:06,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:53:06,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:53:06,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:53:06,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:53:06,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:53:06,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:53:06,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:53:06,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:53:06,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:53:06,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:53:06,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:53:06,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:53:06,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:53:06,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:53:06,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:53:06,917 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 21:53:07,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:53:07,255 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:53:07,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:53:07,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:53:07,263 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:53:07,264 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label08.c [2020-10-14 21:53:07,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab4b4472/eb5d336ceaa5419794696aca0febcf14/FLAGfc80b5d16 [2020-10-14 21:53:07,954 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:53:07,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label08.c [2020-10-14 21:53:07,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab4b4472/eb5d336ceaa5419794696aca0febcf14/FLAGfc80b5d16 [2020-10-14 21:53:08,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab4b4472/eb5d336ceaa5419794696aca0febcf14 [2020-10-14 21:53:08,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:53:08,175 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:53:08,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:53:08,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:53:08,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:53:08,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:53:08" (1/1) ... [2020-10-14 21:53:08,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12e6d6ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:08, skipping insertion in model container [2020-10-14 21:53:08,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:53:08" (1/1) ... [2020-10-14 21:53:08,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:53:08,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:53:09,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:53:09,448 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:53:09,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:53:09,924 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:53:09,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:09 WrapperNode [2020-10-14 21:53:09,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:53:09,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:53:09,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:53:09,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:53:09,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:09" (1/1) ... [2020-10-14 21:53:09,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:09" (1/1) ... [2020-10-14 21:53:09,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:09" (1/1) ... [2020-10-14 21:53:09,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:09" (1/1) ... [2020-10-14 21:53:10,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:09" (1/1) ... [2020-10-14 21:53:10,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:09" (1/1) ... [2020-10-14 21:53:10,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:09" (1/1) ... [2020-10-14 21:53:10,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:53:10,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:53:10,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:53:10,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:53:10,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:09" (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 21:53:10,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:53:10,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:53:10,247 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:53:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:53:10,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:53:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:53:10,248 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:53:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:53:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:53:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:53:10,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:53:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:53:10,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:53:18,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:53:18,247 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:53:18,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:53:18 BoogieIcfgContainer [2020-10-14 21:53:18,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:53:18,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:53:18,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:53:18,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:53:18,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:53:08" (1/3) ... [2020-10-14 21:53:18,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8c8e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:53:18, skipping insertion in model container [2020-10-14 21:53:18,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:53:09" (2/3) ... [2020-10-14 21:53:18,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8c8e46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:53:18, skipping insertion in model container [2020-10-14 21:53:18,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:53:18" (3/3) ... [2020-10-14 21:53:18,275 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label08.c [2020-10-14 21:53:18,294 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:53:18,303 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:53:18,319 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:53:18,351 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:53:18,351 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:53:18,351 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:53:18,352 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:53:18,352 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:53:18,352 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:53:18,352 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:53:18,352 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:53:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-14 21:53:18,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 21:53:18,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:18,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:53:18,392 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:18,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:18,399 INFO L82 PathProgramCache]: Analyzing trace with hash 192141165, now seen corresponding path program 1 times [2020-10-14 21:53:18,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:18,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215504632] [2020-10-14 21:53:18,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:18,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:19,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:19,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 21:53:19,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-14 21:53:19,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:19,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:53:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:19,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 21:53:19,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:53:19,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:19,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:19,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:19,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:19,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:19,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:53:19,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:19,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:19,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:19,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:19,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:19,200 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 21:53:19,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215504632] [2020-10-14 21:53:19,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:53:19,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:53:19,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579385780] [2020-10-14 21:53:19,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:53:19,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:19,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:53:19,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:53:19,229 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-14 21:53:25,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:25,147 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-14 21:53:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:53:25,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-14 21:53:25,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:25,173 INFO L225 Difference]: With dead ends: 1199 [2020-10-14 21:53:25,173 INFO L226 Difference]: Without dead ends: 697 [2020-10-14 21:53:25,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:53:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-14 21:53:25,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-14 21:53:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-14 21:53:25,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-14 21:53:25,340 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 57 [2020-10-14 21:53:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:25,342 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-14 21:53:25,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:53:25,343 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-14 21:53:25,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 21:53:25,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:25,361 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 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 21:53:25,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:53:25,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1704640918, now seen corresponding path program 1 times [2020-10-14 21:53:25,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:25,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101716321] [2020-10-14 21:53:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:25,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:26,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:28,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:28,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 21:53:28,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:53:28,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2885 [2020-10-14 21:53:28,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:28,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:53:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:28,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:53:28,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:53:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:28,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:28,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:28,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:28,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:28,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 21:53:28,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:28,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:28,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:28,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:28,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:28,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:53:28,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-14 21:53:28,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:28,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:28,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:53:28,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:53:28,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101716321] [2020-10-14 21:53:28,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:53:28,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:53:28,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054044851] [2020-10-14 21:53:28,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:53:28,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:28,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:53:28,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:53:28,854 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 7 states. [2020-10-14 21:53:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:53:38,132 INFO L93 Difference]: Finished difference Result 2047 states and 3015 transitions. [2020-10-14 21:53:38,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:53:38,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-14 21:53:38,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:53:38,152 INFO L225 Difference]: With dead ends: 2047 [2020-10-14 21:53:38,152 INFO L226 Difference]: Without dead ends: 1362 [2020-10-14 21:53:38,157 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 21:53:38,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2020-10-14 21:53:38,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1336. [2020-10-14 21:53:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-14 21:53:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1728 transitions. [2020-10-14 21:53:38,238 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1728 transitions. Word has length 126 [2020-10-14 21:53:38,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:53:38,241 INFO L479 AbstractCegarLoop]: Abstraction has 1336 states and 1728 transitions. [2020-10-14 21:53:38,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:53:38,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1728 transitions. [2020-10-14 21:53:38,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 21:53:38,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:53:38,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:53:38,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:53:38,253 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:53:38,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:53:38,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1755799034, now seen corresponding path program 1 times [2020-10-14 21:53:38,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:53:38,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388698234] [2020-10-14 21:53:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:53:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:38,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:38,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:39,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:40,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:42,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:42,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 21:53:42,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:53:42,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4467 [2020-10-14 21:53:42,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:42,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:42,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:53:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:53:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-10-14 21:53:42,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:43,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:53:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:43,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:43,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:43,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:53:43,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:43,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:53:43,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:43,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:43,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:53:43,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:43,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:53:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:43,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:43,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:43,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:53:43,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:53:43,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:53:43,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:43,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:53:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:53:43,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 21:53:43,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:53:43,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:53:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:53:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:43,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:43,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:53:44,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:53:44,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:53:44,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:53:44,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-14 21:53:44,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:53:44,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:53:44,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:53:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:53:44,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 21:53:44,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:53:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 46 proven. 129 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:53:44,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388698234] [2020-10-14 21:53:44,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:53:44,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:53:44,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869422665] [2020-10-14 21:53:44,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:53:44,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:53:44,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:53:44,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:53:44,440 INFO L87 Difference]: Start difference. First operand 1336 states and 1728 transitions. Second operand 8 states. [2020-10-14 21:54:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:02,395 INFO L93 Difference]: Finished difference Result 4890 states and 6523 transitions. [2020-10-14 21:54:02,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 21:54:02,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 231 [2020-10-14 21:54:02,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:02,430 INFO L225 Difference]: With dead ends: 4890 [2020-10-14 21:54:02,430 INFO L226 Difference]: Without dead ends: 3560 [2020-10-14 21:54:02,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:54:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2020-10-14 21:54:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3227. [2020-10-14 21:54:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3227 states. [2020-10-14 21:54:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3227 states to 3227 states and 4082 transitions. [2020-10-14 21:54:02,586 INFO L78 Accepts]: Start accepts. Automaton has 3227 states and 4082 transitions. Word has length 231 [2020-10-14 21:54:02,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:02,588 INFO L479 AbstractCegarLoop]: Abstraction has 3227 states and 4082 transitions. [2020-10-14 21:54:02,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:54:02,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3227 states and 4082 transitions. [2020-10-14 21:54:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-14 21:54:02,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:02,598 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:02,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:54:02,600 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:02,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:02,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1290056644, now seen corresponding path program 1 times [2020-10-14 21:54:02,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:02,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1054503528] [2020-10-14 21:54:02,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:02,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:03,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:07,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:07,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-14 21:54:07,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:54:07,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-14 21:54:07,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:07,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:07,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:54:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:54:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-14 21:54:07,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:07,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:07,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:07,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:07,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:07,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:54:07,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:07,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:07,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:54:07,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:07,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:07,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:08,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:08,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:54:08,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:08,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 468 [2020-10-14 21:54:08,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:08,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:08,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:08,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:54:08,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:08,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-14 21:54:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:08,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:08,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:54:08,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:08,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 21:54:08,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:08,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:08,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:54:08,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:08,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 100 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:54:09,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1054503528] [2020-10-14 21:54:09,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:09,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:09,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350688443] [2020-10-14 21:54:09,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:09,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:09,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:09,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:09,432 INFO L87 Difference]: Start difference. First operand 3227 states and 4082 transitions. Second operand 7 states. [2020-10-14 21:54:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:17,970 INFO L93 Difference]: Finished difference Result 6185 states and 7918 transitions. [2020-10-14 21:54:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:54:17,974 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 337 [2020-10-14 21:54:17,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:17,993 INFO L225 Difference]: With dead ends: 6185 [2020-10-14 21:54:17,993 INFO L226 Difference]: Without dead ends: 3271 [2020-10-14 21:54:18,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:54:18,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2020-10-14 21:54:18,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3248. [2020-10-14 21:54:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3248 states. [2020-10-14 21:54:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3248 states to 3248 states and 4114 transitions. [2020-10-14 21:54:18,097 INFO L78 Accepts]: Start accepts. Automaton has 3248 states and 4114 transitions. Word has length 337 [2020-10-14 21:54:18,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:18,099 INFO L479 AbstractCegarLoop]: Abstraction has 3248 states and 4114 transitions. [2020-10-14 21:54:18,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:54:18,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3248 states and 4114 transitions. [2020-10-14 21:54:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-14 21:54:18,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:18,111 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:54:18,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:54:18,112 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:18,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:18,113 INFO L82 PathProgramCache]: Analyzing trace with hash 819475629, now seen corresponding path program 1 times [2020-10-14 21:54:18,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:18,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594444364] [2020-10-14 21:54:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:18,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:18,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:21,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:21,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 423 [2020-10-14 21:54:21,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3086 [2020-10-14 21:54:21,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:21,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:54:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:54:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:21,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:21,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:21,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:21,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:21,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:21,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:54:21,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:21,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:21,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:21,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:21,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:21,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:21,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:21,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:22,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:22,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:54:22,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:22,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-14 21:54:22,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:22,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:22,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:54:22,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:22,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:54:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:22,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:22,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:22,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:54:22,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 21:54:22,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:22,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:22,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:22,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:22,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:54:22,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:54:22,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594444364] [2020-10-14 21:54:22,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:22,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:54:22,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832176646] [2020-10-14 21:54:22,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:54:22,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:22,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:54:22,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:54:22,749 INFO L87 Difference]: Start difference. First operand 3248 states and 4114 transitions. Second operand 7 states. [2020-10-14 21:54:37,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:54:37,019 INFO L93 Difference]: Finished difference Result 7214 states and 9752 transitions. [2020-10-14 21:54:37,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:54:37,021 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2020-10-14 21:54:37,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:54:37,051 INFO L225 Difference]: With dead ends: 7214 [2020-10-14 21:54:37,051 INFO L226 Difference]: Without dead ends: 4588 [2020-10-14 21:54:37,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:54:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4588 states. [2020-10-14 21:54:37,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4588 to 4550. [2020-10-14 21:54:37,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4550 states. [2020-10-14 21:54:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4550 states to 4550 states and 5684 transitions. [2020-10-14 21:54:37,219 INFO L78 Accepts]: Start accepts. Automaton has 4550 states and 5684 transitions. Word has length 411 [2020-10-14 21:54:37,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:54:37,220 INFO L479 AbstractCegarLoop]: Abstraction has 4550 states and 5684 transitions. [2020-10-14 21:54:37,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:54:37,220 INFO L276 IsEmpty]: Start isEmpty. Operand 4550 states and 5684 transitions. [2020-10-14 21:54:37,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2020-10-14 21:54:37,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:54:37,232 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-14 21:54:37,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:54:37,232 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:54:37,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:54:37,233 INFO L82 PathProgramCache]: Analyzing trace with hash 452828547, now seen corresponding path program 1 times [2020-10-14 21:54:37,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:54:37,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768009841] [2020-10-14 21:54:37,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:54:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:37,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:37,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:40,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:42,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:42,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 446 [2020-10-14 21:54:42,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:54:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-14 21:54:42,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:42,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:54:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-14 21:54:42,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-14 21:54:42,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:42,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:54:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:42,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:42,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:42,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:54:42,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:42,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:54:42,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:42,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:54:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:54:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:42,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:54:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:42,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:42,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:42,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:54:42,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:42,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 21:54:42,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:42,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:54:42,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:54:42,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:54:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:42,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-14 21:54:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:42,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:42,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:43,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:43,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 21:54:43,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:54:43,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-10-14 21:54:43,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:43,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:43,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:43,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-14 21:54:43,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:54:43,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-14 21:54:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:54:43,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:54:43,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:54:43,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:54:43,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:54:43,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 21:54:43,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:54:43,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:54:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:54:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:54:43,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:54:43,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:54:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 392 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 21:54:43,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768009841] [2020-10-14 21:54:43,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:54:43,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:54:43,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126990632] [2020-10-14 21:54:43,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:54:43,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:54:43,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:54:43,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:54:43,661 INFO L87 Difference]: Start difference. First operand 4550 states and 5684 transitions. Second operand 8 states. [2020-10-14 21:55:00,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:00,381 INFO L93 Difference]: Finished difference Result 10796 states and 14161 transitions. [2020-10-14 21:55:00,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:55:00,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 432 [2020-10-14 21:55:00,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:00,424 INFO L225 Difference]: With dead ends: 10796 [2020-10-14 21:55:00,425 INFO L226 Difference]: Without dead ends: 6248 [2020-10-14 21:55:00,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:55:00,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6248 states. [2020-10-14 21:55:00,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6248 to 5553. [2020-10-14 21:55:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5553 states. [2020-10-14 21:55:00,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5553 states to 5553 states and 6876 transitions. [2020-10-14 21:55:00,730 INFO L78 Accepts]: Start accepts. Automaton has 5553 states and 6876 transitions. Word has length 432 [2020-10-14 21:55:00,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:00,731 INFO L479 AbstractCegarLoop]: Abstraction has 5553 states and 6876 transitions. [2020-10-14 21:55:00,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:55:00,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5553 states and 6876 transitions. [2020-10-14 21:55:00,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-14 21:55:00,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:00,750 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:55:00,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:55:00,751 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:00,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:00,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1211414981, now seen corresponding path program 1 times [2020-10-14 21:55:00,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:00,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935314283] [2020-10-14 21:55:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:00,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:01,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:02,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:05,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:05,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 500 [2020-10-14 21:55:05,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:55:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 21:55:05,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:05,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 21:55:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:55:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 439 [2020-10-14 21:55:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:06,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:06,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:06,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:06,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:06,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:06,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:55:06,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:06,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:06,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:55:06,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:06,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:06,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:06,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:55:06,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-14 21:55:06,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:06,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-14 21:55:06,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:55:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:07,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:07,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:07,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:55:07,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:07,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-14 21:55:07,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:07,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:55:07,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:07,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-14 21:55:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:07,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:07,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:07,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:55:07,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:07,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 21:55:07,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:07,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:07,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:55:07,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:08,369 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 295 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 21:55:08,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935314283] [2020-10-14 21:55:08,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:08,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:55:08,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910917628] [2020-10-14 21:55:08,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:55:08,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:08,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:55:08,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:55:08,372 INFO L87 Difference]: Start difference. First operand 5553 states and 6876 transitions. Second operand 8 states. [2020-10-14 21:55:19,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:19,324 INFO L93 Difference]: Finished difference Result 12741 states and 15906 transitions. [2020-10-14 21:55:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:55:19,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 486 [2020-10-14 21:55:19,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:19,360 INFO L225 Difference]: With dead ends: 12741 [2020-10-14 21:55:19,360 INFO L226 Difference]: Without dead ends: 7492 [2020-10-14 21:55:19,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:55:19,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7492 states. [2020-10-14 21:55:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7492 to 7116. [2020-10-14 21:55:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7116 states. [2020-10-14 21:55:19,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7116 states to 7116 states and 8549 transitions. [2020-10-14 21:55:19,535 INFO L78 Accepts]: Start accepts. Automaton has 7116 states and 8549 transitions. Word has length 486 [2020-10-14 21:55:19,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:19,536 INFO L479 AbstractCegarLoop]: Abstraction has 7116 states and 8549 transitions. [2020-10-14 21:55:19,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:55:19,536 INFO L276 IsEmpty]: Start isEmpty. Operand 7116 states and 8549 transitions. [2020-10-14 21:55:19,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-14 21:55:19,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:19,546 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 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 21:55:19,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:55:19,546 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:19,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:19,547 INFO L82 PathProgramCache]: Analyzing trace with hash 512494619, now seen corresponding path program 1 times [2020-10-14 21:55:19,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:19,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765741060] [2020-10-14 21:55:19,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:19,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:19,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:23,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:23,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 536 [2020-10-14 21:55:23,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:55:23,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4113 [2020-10-14 21:55:23,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:23,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-14 21:55:23,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:55:23,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:23,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:23,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:23,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:23,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:23,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:55:23,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:23,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:23,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:23,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:23,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:24,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:24,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:24,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-14 21:55:24,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:24,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-14 21:55:24,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:24,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:24,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 21:55:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:24,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 21:55:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:24,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:24,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:24,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:24,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-14 21:55:24,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:24,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:55:24,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:24,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-14 21:55:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:24,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:24,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:24,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:55:24,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:24,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 21:55:24,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:24,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:24,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:24,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-14 21:55:24,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:24,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 262 proven. 79 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 21:55:24,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765741060] [2020-10-14 21:55:24,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:24,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:55:24,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703582136] [2020-10-14 21:55:24,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:24,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:24,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:24,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:24,946 INFO L87 Difference]: Start difference. First operand 7116 states and 8549 transitions. Second operand 7 states. [2020-10-14 21:55:36,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:36,275 INFO L93 Difference]: Finished difference Result 15218 states and 18338 transitions. [2020-10-14 21:55:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:55:36,277 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 522 [2020-10-14 21:55:36,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:36,316 INFO L225 Difference]: With dead ends: 15218 [2020-10-14 21:55:36,316 INFO L226 Difference]: Without dead ends: 8724 [2020-10-14 21:55:36,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:55:36,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8724 states. [2020-10-14 21:55:36,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8724 to 8680. [2020-10-14 21:55:36,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8680 states. [2020-10-14 21:55:36,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8680 states to 8680 states and 10219 transitions. [2020-10-14 21:55:36,504 INFO L78 Accepts]: Start accepts. Automaton has 8680 states and 10219 transitions. Word has length 522 [2020-10-14 21:55:36,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:36,505 INFO L479 AbstractCegarLoop]: Abstraction has 8680 states and 10219 transitions. [2020-10-14 21:55:36,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:36,505 INFO L276 IsEmpty]: Start isEmpty. Operand 8680 states and 10219 transitions. [2020-10-14 21:55:36,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2020-10-14 21:55:36,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:36,514 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 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 21:55:36,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:55:36,514 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:36,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1360042723, now seen corresponding path program 1 times [2020-10-14 21:55:36,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:36,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108432291] [2020-10-14 21:55:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:36,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:37,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:37,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 548 [2020-10-14 21:55:37,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:55:37,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1278 [2020-10-14 21:55:37,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:37,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:37,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:55:37,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:55:37,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:37,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:38,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:38,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:38,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:38,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:55:38,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:38,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:38,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:38,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:38,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:38,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:38,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:55:38,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:38,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:55:38,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:38,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:38,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:38,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:38,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:38,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:55:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:38,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:38,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:38,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:38,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 21:55:38,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:38,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:38,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:38,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:55:38,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:55:38,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:55:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:38,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:38,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:38,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:55:38,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:38,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 21:55:38,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:38,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:38,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:55:38,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:38,645 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:55:38,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108432291] [2020-10-14 21:55:38,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:38,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:55:38,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075589017] [2020-10-14 21:55:38,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:38,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:38,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:38,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:38,655 INFO L87 Difference]: Start difference. First operand 8680 states and 10219 transitions. Second operand 7 states. [2020-10-14 21:55:53,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:55:53,400 INFO L93 Difference]: Finished difference Result 15897 states and 20096 transitions. [2020-10-14 21:55:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:55:53,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 534 [2020-10-14 21:55:53,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:55:53,446 INFO L225 Difference]: With dead ends: 15897 [2020-10-14 21:55:53,446 INFO L226 Difference]: Without dead ends: 10020 [2020-10-14 21:55:53,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 21:55:53,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10020 states. [2020-10-14 21:55:53,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10020 to 9956. [2020-10-14 21:55:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9956 states. [2020-10-14 21:55:53,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9956 states to 9956 states and 11839 transitions. [2020-10-14 21:55:53,722 INFO L78 Accepts]: Start accepts. Automaton has 9956 states and 11839 transitions. Word has length 534 [2020-10-14 21:55:53,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:55:53,724 INFO L479 AbstractCegarLoop]: Abstraction has 9956 states and 11839 transitions. [2020-10-14 21:55:53,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:55:53,724 INFO L276 IsEmpty]: Start isEmpty. Operand 9956 states and 11839 transitions. [2020-10-14 21:55:53,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2020-10-14 21:55:53,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:55:53,737 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:55:53,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:55:53,738 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:55:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:55:53,738 INFO L82 PathProgramCache]: Analyzing trace with hash 510177383, now seen corresponding path program 1 times [2020-10-14 21:55:53,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:55:53,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486927790] [2020-10-14 21:55:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:55:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:54,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:54,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:56,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:56,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 550 [2020-10-14 21:55:56,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:55:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2434 [2020-10-14 21:55:56,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:56,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-14 21:55:56,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:55:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:56,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:55:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:56,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:56,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:56,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:55:56,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:56,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:55:56,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:56,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:56,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:56,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:56,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:56,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:55:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:56,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:56,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:56,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:55:56,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:56,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 21:55:56,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:56,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:55:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:55:56,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:56,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:55:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:56,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:56,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:56,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:55:56,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:56,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 21:55:56,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:56,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:55:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:55:56,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:55:56,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:56,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:55:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:55:56,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:55:56,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:55:56,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 21:55:56,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:55:56,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-14 21:55:56,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:55:56,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:55:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:55:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:55:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:55:56,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:55:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 313 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-14 21:55:57,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486927790] [2020-10-14 21:55:57,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:55:57,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:55:57,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792224034] [2020-10-14 21:55:57,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:55:57,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:55:57,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:55:57,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:55:57,102 INFO L87 Difference]: Start difference. First operand 9956 states and 11839 transitions. Second operand 7 states. [2020-10-14 21:56:10,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:10,379 INFO L93 Difference]: Finished difference Result 22155 states and 27427 transitions. [2020-10-14 21:56:10,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:56:10,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 536 [2020-10-14 21:56:10,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:10,449 INFO L225 Difference]: With dead ends: 22155 [2020-10-14 21:56:10,449 INFO L226 Difference]: Without dead ends: 12821 [2020-10-14 21:56:10,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:56:10,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12821 states. [2020-10-14 21:56:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12821 to 12785. [2020-10-14 21:56:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12785 states. [2020-10-14 21:56:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12785 states to 12785 states and 15109 transitions. [2020-10-14 21:56:10,778 INFO L78 Accepts]: Start accepts. Automaton has 12785 states and 15109 transitions. Word has length 536 [2020-10-14 21:56:10,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:10,779 INFO L479 AbstractCegarLoop]: Abstraction has 12785 states and 15109 transitions. [2020-10-14 21:56:10,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:10,779 INFO L276 IsEmpty]: Start isEmpty. Operand 12785 states and 15109 transitions. [2020-10-14 21:56:10,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 617 [2020-10-14 21:56:10,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:10,795 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:56:10,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:56:10,796 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:10,796 INFO L82 PathProgramCache]: Analyzing trace with hash -326887421, now seen corresponding path program 1 times [2020-10-14 21:56:10,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:10,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198838451] [2020-10-14 21:56:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:11,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:11,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:14,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:14,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 630 [2020-10-14 21:56:14,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:14,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3136 [2020-10-14 21:56:14,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:14,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-14 21:56:14,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 21:56:14,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:14,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:14,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:14,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:14,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:14,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:14,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:56:14,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:14,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:14,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:14,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:14,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:14,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:14,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:14,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:14,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:56:14,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:14,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 21:56:14,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:14,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:14,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:56:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:14,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:14,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 21:56:14,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:14,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 21:56:14,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:14,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-14 21:56:14,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:14,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-14 21:56:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:14,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:14,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 21:56:14,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:14,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 21:56:14,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:14,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:14,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:14,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:14,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:56:14,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:15,077 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-14 21:56:15,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198838451] [2020-10-14 21:56:15,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:15,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:56:15,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408108501] [2020-10-14 21:56:15,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:56:15,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:15,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:56:15,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:56:15,079 INFO L87 Difference]: Start difference. First operand 12785 states and 15109 transitions. Second operand 7 states. [2020-10-14 21:56:31,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:56:31,089 INFO L93 Difference]: Finished difference Result 33436 states and 40512 transitions. [2020-10-14 21:56:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:56:31,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 616 [2020-10-14 21:56:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:56:31,157 INFO L225 Difference]: With dead ends: 33436 [2020-10-14 21:56:31,157 INFO L226 Difference]: Without dead ends: 21273 [2020-10-14 21:56:31,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:56:31,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21273 states. [2020-10-14 21:56:31,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21273 to 19978. [2020-10-14 21:56:31,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19978 states. [2020-10-14 21:56:31,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19978 states to 19978 states and 24019 transitions. [2020-10-14 21:56:31,568 INFO L78 Accepts]: Start accepts. Automaton has 19978 states and 24019 transitions. Word has length 616 [2020-10-14 21:56:31,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:56:31,569 INFO L479 AbstractCegarLoop]: Abstraction has 19978 states and 24019 transitions. [2020-10-14 21:56:31,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:56:31,569 INFO L276 IsEmpty]: Start isEmpty. Operand 19978 states and 24019 transitions. [2020-10-14 21:56:31,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2020-10-14 21:56:31,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:56:31,583 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:56:31,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 21:56:31,583 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:56:31,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:56:31,584 INFO L82 PathProgramCache]: Analyzing trace with hash -995320754, now seen corresponding path program 1 times [2020-10-14 21:56:31,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:56:31,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125254990] [2020-10-14 21:56:31,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:56:31,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:31,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:32,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:32,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:33,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:36,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:36,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 637 [2020-10-14 21:56:36,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:56:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-14 21:56:36,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:36,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:36,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 21:56:36,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-14 21:56:36,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-14 21:56:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:36,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:56:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:36,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:36,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:36,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:56:36,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 21:56:36,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:36,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:56:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:36,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:56:36,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:37,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:56:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:37,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:37,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:37,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-14 21:56:37,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:37,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-14 21:56:37,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:37,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:56:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:56:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-14 21:56:37,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:37,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-14 21:56:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:37,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:37,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:56:37,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:37,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 21:56:37,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:37,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:56:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:37,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:56:37,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:37,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-14 21:56:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:37,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:37,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:37,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 21:56:37,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:56:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-14 21:56:37,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:37,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 21:56:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:37,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 21:56:37,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 486 [2020-10-14 21:56:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:56:37,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:37,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:56:37,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:56:37,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-14 21:56:37,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:56:37,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 21:56:37,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:56:37,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:56:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:56:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:56:37,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 21:56:37,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:56:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 539 proven. 107 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 21:56:38,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125254990] [2020-10-14 21:56:38,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:56:38,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 21:56:38,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819933797] [2020-10-14 21:56:38,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 21:56:38,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:56:38,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 21:56:38,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:56:38,459 INFO L87 Difference]: Start difference. First operand 19978 states and 24019 transitions. Second operand 12 states. [2020-10-14 21:56:42,777 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-14 21:56:43,314 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2020-10-14 21:56:44,760 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-10-14 21:56:45,952 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2020-10-14 21:56:47,997 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39