/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/array-crafted/mapsum3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:14:55,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:14:55,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:14:55,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:14:55,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:14:55,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:14:55,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:14:55,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:14:55,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:14:55,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:14:55,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:14:55,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:14:55,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:14:55,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:14:55,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:14:55,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:14:55,141 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:14:55,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:14:55,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:14:55,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:14:55,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:14:55,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:14:55,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:14:55,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:14:55,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:14:55,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:14:55,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:14:55,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:14:55,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:14:55,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:14:55,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:14:55,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:14:55,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:14:55,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:14:55,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:14:55,182 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:14:55,183 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:14:55,183 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:14:55,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:14:55,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:14:55,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:14:55,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 23:14:55,228 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:14:55,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:14:55,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:14:55,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:14:55,231 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:14:55,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:14:55,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:14:55,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:14:55,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:14:55,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:14:55,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:14:55,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:14:55,234 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:14:55,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:14:55,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:14:55,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:14:55,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:14:55,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:14:55,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:14:55,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:14:55,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:14:55,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:14:55,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:14:55,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:14:55,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:14:55,237 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:14:55,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:14:55,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:14:55,237 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:14:55,238 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:14:55,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:14:55,566 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:14:55,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:14:55,571 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:14:55,571 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:14:55,572 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum3.i [2020-10-13 23:14:55,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf3ec9f6f/11b200df8dfc40d3853da0474df5b43e/FLAGfff14236e [2020-10-13 23:14:56,142 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:14:56,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum3.i [2020-10-13 23:14:56,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf3ec9f6f/11b200df8dfc40d3853da0474df5b43e/FLAGfff14236e [2020-10-13 23:14:56,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf3ec9f6f/11b200df8dfc40d3853da0474df5b43e [2020-10-13 23:14:56,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:14:56,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:14:56,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:14:56,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:14:56,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:14:56,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:56" (1/1) ... [2020-10-13 23:14:56,532 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@291cbb33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:56, skipping insertion in model container [2020-10-13 23:14:56,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:14:56" (1/1) ... [2020-10-13 23:14:56,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:14:56,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:14:56,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:14:56,753 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:14:56,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:14:56,792 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:14:56,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:56 WrapperNode [2020-10-13 23:14:56,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:14:56,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:14:56,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:14:56,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:14:56,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:56" (1/1) ... [2020-10-13 23:14:56,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:56" (1/1) ... [2020-10-13 23:14:56,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:56" (1/1) ... [2020-10-13 23:14:56,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:56" (1/1) ... [2020-10-13 23:14:56,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:56" (1/1) ... [2020-10-13 23:14:56,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:56" (1/1) ... [2020-10-13 23:14:56,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:56" (1/1) ... [2020-10-13 23:14:56,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:14:56,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:14:56,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:14:56,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:14:56,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:14:56,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:14:56,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:14:56,993 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-13 23:14:56,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:14:56,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:14:56,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:14:56,994 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-13 23:14:56,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:14:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:14:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:14:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:14:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:14:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:14:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:14:57,278 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:14:57,278 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:14:57,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:14:57 BoogieIcfgContainer [2020-10-13 23:14:57,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:14:57,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:14:57,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:14:57,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:14:57,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:14:56" (1/3) ... [2020-10-13 23:14:57,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7950f4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:14:57, skipping insertion in model container [2020-10-13 23:14:57,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:14:56" (2/3) ... [2020-10-13 23:14:57,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7950f4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:14:57, skipping insertion in model container [2020-10-13 23:14:57,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:14:57" (3/3) ... [2020-10-13 23:14:57,294 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum3.i [2020-10-13 23:14:57,309 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:14:57,317 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:14:57,336 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:14:57,371 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:14:57,372 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:14:57,372 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:14:57,372 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:14:57,372 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:14:57,372 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:14:57,373 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:14:57,373 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:14:57,396 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-13 23:14:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:14:57,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:57,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:57,406 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:57,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:57,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times [2020-10-13 23:14:57,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:57,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767868845] [2020-10-13 23:14:57,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:57,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:57,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:57,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:57,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:58,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:58,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:14:58,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:14:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-10-13 23:14:58,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:58,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:14:58,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:58,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:14:59,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:14:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:59,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:59,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:59,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:14:59,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:14:59,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:14:59,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:59,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:59,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:59,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:59,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:14:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:59,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:59,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:59,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:59,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:59,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 23:14:59,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:59,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:59,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:59,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:59,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:14:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:59,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:59,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:59,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:59,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:59,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:14:59,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:59,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:59,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:14:59,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:14:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:59,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:59,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:59,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:14:59,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:14:59,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:14:59,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:14:59,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:14:59,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:14:59,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:14:59,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:14:59,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:14:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:14:59,128 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:14:59,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767868845] [2020-10-13 23:14:59,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:14:59,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:14:59,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712306192] [2020-10-13 23:14:59,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:14:59,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:14:59,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:14:59,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:14:59,160 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-13 23:14:59,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:14:59,308 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-10-13 23:14:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:14:59,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2020-10-13 23:14:59,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:14:59,325 INFO L225 Difference]: With dead ends: 54 [2020-10-13 23:14:59,325 INFO L226 Difference]: Without dead ends: 26 [2020-10-13 23:14:59,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:14:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-13 23:14:59,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-13 23:14:59,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-13 23:14:59,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-10-13 23:14:59,390 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32 [2020-10-13 23:14:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:14:59,397 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-10-13 23:14:59,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:14:59,397 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-10-13 23:14:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-13 23:14:59,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:14:59,403 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:14:59,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:14:59,404 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:14:59,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:14:59,405 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times [2020-10-13 23:14:59,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:14:59,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277280468] [2020-10-13 23:14:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:14:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:14:59,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:59,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:59,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:59,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:59,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:14:59,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:00,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:00,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 23:15:00,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:15:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1283 [2020-10-13 23:15:00,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:00,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:15:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:15:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:15:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:00,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:00,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:00,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:00,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:00,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:15:00,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:00,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:00,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:00,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:00,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:15:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:00,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:00,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:00,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:00,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:15:00,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:00,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 23:15:00,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:00,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:00,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:00,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:15:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:00,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:00,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:15:00,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:00,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 23:15:00,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:00,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:00,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:15:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:00,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:15:00,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:00,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:15:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:00,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:00,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:00,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:00,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:15:00,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:00,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:15:00,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:00,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:00,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:00,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:15:00,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:00,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:00,842 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 23:15:00,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277280468] [2020-10-13 23:15:00,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:00,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-13 23:15:00,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072599668] [2020-10-13 23:15:00,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:15:00,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:00,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:15:00,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:15:00,853 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-10-13 23:15:00,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:00,977 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2020-10-13 23:15:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:15:00,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-13 23:15:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:00,980 INFO L225 Difference]: With dead ends: 45 [2020-10-13 23:15:00,981 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 23:15:00,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:00,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 23:15:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-10-13 23:15:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 23:15:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 23:15:01,000 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32 [2020-10-13 23:15:01,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:01,001 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 23:15:01,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:15:01,005 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 23:15:01,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 23:15:01,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:01,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:01,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:15:01,010 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:01,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:01,011 INFO L82 PathProgramCache]: Analyzing trace with hash 540504713, now seen corresponding path program 1 times [2020-10-13 23:15:01,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:01,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292311560] [2020-10-13 23:15:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:01,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:01,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:01,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:01,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:01,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:04,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-13 23:15:04,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:04,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3008 [2020-10-13 23:15:04,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:04,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:15:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:04,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:15:04,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:04,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:04,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:04,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:04,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:04,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:04,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:04,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:04,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:04,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:04,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:04,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 23:15:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:04,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:04,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:04,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:04,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:15:04,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:04,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:04,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:04,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:04,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:04,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:04,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 23:15:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:04,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:04,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:04,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:04,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:15:04,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:04,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:04,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:04,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:04,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:15:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:04,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:04,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:04,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:04,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:15:04,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:04,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:04,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:04,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:04,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:04,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-13 23:15:04,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292311560] [2020-10-13 23:15:04,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:15:04,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:15:04,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199331092] [2020-10-13 23:15:04,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:15:04,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:04,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:15:04,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:15:04,180 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 23:15:04,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:04,254 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-13 23:15:04,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:15:04,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-10-13 23:15:04,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:04,256 INFO L225 Difference]: With dead ends: 48 [2020-10-13 23:15:04,256 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 23:15:04,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:15:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 23:15:04,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 23:15:04,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 23:15:04,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 23:15:04,264 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 38 [2020-10-13 23:15:04,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:04,265 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 23:15:04,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:15:04,265 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 23:15:04,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 23:15:04,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:04,267 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:04,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:15:04,267 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:04,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:04,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2063023467, now seen corresponding path program 1 times [2020-10-13 23:15:04,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:04,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583608103] [2020-10-13 23:15:04,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:04,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:04,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:08,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-13 23:15:08,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:08,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4435 [2020-10-13 23:15:08,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:08,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:08,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:15:08,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:15:08,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:15:08,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:08,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:08,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:08,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:08,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:08,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:15:08,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:08,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:08,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:08,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:08,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:08,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:15:08,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:08,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:08,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:08,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:08,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:15:08,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:08,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:08,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:08,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:08,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:08,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:08,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:15:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:08,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:08,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:08,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:08,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:15:08,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:08,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:08,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:08,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:08,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:08,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:15:08,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:15:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:08,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:08,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:08,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:08,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:08,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:15:08,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:08,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:08,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:08,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:08,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:08,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:15:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 23:15:08,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583608103] [2020-10-13 23:15:08,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:15:08,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:15:08,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664709928] [2020-10-13 23:15:08,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:15:08,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:08,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:15:08,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:15:08,886 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 4 states. [2020-10-13 23:15:08,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:08,982 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2020-10-13 23:15:08,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:15:08,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-10-13 23:15:08,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:08,984 INFO L225 Difference]: With dead ends: 43 [2020-10-13 23:15:08,984 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 23:15:08,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:15:08,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 23:15:08,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 23:15:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 23:15:08,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 23:15:08,998 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40 [2020-10-13 23:15:09,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:09,002 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 23:15:09,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:15:09,002 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 23:15:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-13 23:15:09,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:09,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:09,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:15:09,006 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:09,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times [2020-10-13 23:15:09,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:09,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937922150] [2020-10-13 23:15:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:09,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:09,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:09,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:09,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:09,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:14,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-13 23:15:14,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:14,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:15:14,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:14,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:15:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:14,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:14,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:14,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:14,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:15:14,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:14,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:14,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:14,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:14,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:14,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:14,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:14,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:15:14,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:14,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:14,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:14,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:15:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:14,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:14,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:14,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:14,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:14,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:14,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:14,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:14,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:14,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-13 23:15:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:14,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:14,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:14,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:15:14,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:14,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:14,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 23:15:14,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937922150] [2020-10-13 23:15:14,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:14,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:15:14,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990564903] [2020-10-13 23:15:14,155 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:15:14,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:14,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:15:14,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:14,156 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-10-13 23:15:14,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:14,253 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-13 23:15:14,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:15:14,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-10-13 23:15:14,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:14,255 INFO L225 Difference]: With dead ends: 45 [2020-10-13 23:15:14,256 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 23:15:14,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:14,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 23:15:14,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 23:15:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:15:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 23:15:14,267 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 42 [2020-10-13 23:15:14,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:14,269 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 23:15:14,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:15:14,270 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 23:15:14,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-13 23:15:14,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:14,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:14,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:15:14,273 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:14,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:14,273 INFO L82 PathProgramCache]: Analyzing trace with hash 319829223, now seen corresponding path program 2 times [2020-10-13 23:15:14,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:14,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136016133] [2020-10-13 23:15:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:14,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:14,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:19,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 23:15:19,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:19,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:15:19,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:19,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:19,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:19,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-13 23:15:19,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:19,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:19,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:19,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:19,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:19,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:19,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:19,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:19,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:19,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:19,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:19,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:19,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:19,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:19,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:15:19,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:19,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:19,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:19,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:19,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:15:19,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:19,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:19,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:19,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:19,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:15:19,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:19,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:19,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 23:15:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:19,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:19,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:19,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:19,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:15:19,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:19,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:19,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:19,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-13 23:15:19,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:19,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-13 23:15:19,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136016133] [2020-10-13 23:15:19,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:19,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:15:19,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354947162] [2020-10-13 23:15:19,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:15:19,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:19,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:15:19,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:19,432 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 6 states. [2020-10-13 23:15:19,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:19,541 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-13 23:15:19,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:15:19,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2020-10-13 23:15:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:19,542 INFO L225 Difference]: With dead ends: 47 [2020-10-13 23:15:19,543 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 23:15:19,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:19,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 23:15:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-13 23:15:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-13 23:15:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-13 23:15:19,549 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 44 [2020-10-13 23:15:19,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:19,550 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-13 23:15:19,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:15:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-13 23:15:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 23:15:19,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:19,551 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:19,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:15:19,552 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:19,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:19,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1723091611, now seen corresponding path program 3 times [2020-10-13 23:15:19,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:19,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710413449] [2020-10-13 23:15:19,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:19,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:19,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:20,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:24,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-13 23:15:24,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:24,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:15:24,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:24,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:24,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 23:15:24,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:24,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:24,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:24,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:24,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:24,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:24,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:24,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:24,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:24,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:24,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:24,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:24,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:15:24,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:24,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:24,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:24,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:24,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 23:15:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:24,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:24,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:24,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:15:24,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:24,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:24,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-13 23:15:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:24,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:24,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:15:24,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:24,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 23:15:24,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:24,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:24,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:24,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:24,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:24,685 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-13 23:15:24,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710413449] [2020-10-13 23:15:24,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:24,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:15:24,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780453777] [2020-10-13 23:15:24,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:15:24,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:24,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:15:24,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:24,687 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-10-13 23:15:24,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:24,819 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-10-13 23:15:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:15:24,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-10-13 23:15:24,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:24,822 INFO L225 Difference]: With dead ends: 59 [2020-10-13 23:15:24,823 INFO L226 Difference]: Without dead ends: 36 [2020-10-13 23:15:24,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:24,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-13 23:15:24,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-13 23:15:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 23:15:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-13 23:15:24,834 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 46 [2020-10-13 23:15:24,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:24,835 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-13 23:15:24,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:15:24,836 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-13 23:15:24,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 23:15:24,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:24,838 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:24,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:15:24,839 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:24,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:24,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1269979747, now seen corresponding path program 4 times [2020-10-13 23:15:24,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:24,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818850078] [2020-10-13 23:15:24,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:24,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:24,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:25,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:29,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 23:15:29,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:15:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:15:29,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:29,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:29,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:29,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-13 23:15:29,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:29,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:15:29,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:29,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:29,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:29,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:29,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:15:29,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:29,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:29,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:29,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:29,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:29,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:29,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:29,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:15:29,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:29,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 23:15:29,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:29,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:29,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:29,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:29,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 23:15:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:29,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:29,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:29,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:15:29,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:15:29,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:29,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:29,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:29,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-13 23:15:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:30,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:30,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:30,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:30,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:15:30,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:30,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:15:30,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:30,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:30,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:30,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:30,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 23:15:30,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818850078] [2020-10-13 23:15:30,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:30,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:15:30,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855033767] [2020-10-13 23:15:30,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:15:30,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:30,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:15:30,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:30,041 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-10-13 23:15:30,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:30,230 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2020-10-13 23:15:30,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:15:30,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-10-13 23:15:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:30,233 INFO L225 Difference]: With dead ends: 63 [2020-10-13 23:15:30,233 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 23:15:30,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:15:30,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 23:15:30,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-13 23:15:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-13 23:15:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-13 23:15:30,251 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 52 [2020-10-13 23:15:30,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:30,251 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-13 23:15:30,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:15:30,253 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-13 23:15:30,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 23:15:30,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:30,254 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:30,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:15:30,255 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:30,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:30,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1497008353, now seen corresponding path program 5 times [2020-10-13 23:15:30,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:30,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136050969] [2020-10-13 23:15:30,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:30,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:30,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:30,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:35,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 23:15:35,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:35,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:15:35,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:35,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:35,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:15:35,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:35,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:15:35,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:35,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:35,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:35,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:35,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:35,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:35,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:35,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-13 23:15:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:35,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:35,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:35,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:35,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:15:35,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:35,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:35,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:35,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:35,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:35,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:35,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 23:15:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:35,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:35,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:35,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:15:35,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:35,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:35,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:35,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:35,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:35,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:35,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-13 23:15:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:35,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:35,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:15:35,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:35,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-13 23:15:35,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136050969] [2020-10-13 23:15:35,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:35,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:15:35,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960717848] [2020-10-13 23:15:35,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:15:35,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:35,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:15:35,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:35,421 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2020-10-13 23:15:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:35,503 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-13 23:15:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:15:35,503 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-10-13 23:15:35,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:35,504 INFO L225 Difference]: With dead ends: 68 [2020-10-13 23:15:35,504 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 23:15:35,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:15:35,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 23:15:35,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-13 23:15:35,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-13 23:15:35,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-13 23:15:35,513 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 58 [2020-10-13 23:15:35,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:35,516 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-13 23:15:35,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:15:35,516 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-13 23:15:35,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 23:15:35,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:35,519 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:35,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:15:35,519 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:35,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:35,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1355149629, now seen corresponding path program 6 times [2020-10-13 23:15:35,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:35,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865519079] [2020-10-13 23:15:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:35,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:35,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:40,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 23:15:40,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:40,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:15:40,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:40,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:40,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:40,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:15:40,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:40,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:40,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:40,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:40,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:40,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:40,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:40,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:40,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:40,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:40,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:40,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:40,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:40,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:40,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:15:40,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:40,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:40,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:40,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:40,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:40,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:40,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 23:15:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:40,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:40,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:40,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:40,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:15:40,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:40,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:40,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:15:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:40,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-13 23:15:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:40,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:40,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:15:40,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:15:40,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:40,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:15:40,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:40,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:15:40,716 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 28 proven. 37 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-13 23:15:40,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865519079] [2020-10-13 23:15:40,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:40,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:15:40,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007508734] [2020-10-13 23:15:40,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:15:40,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:40,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:15:40,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:40,720 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 7 states. [2020-10-13 23:15:40,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:40,864 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-10-13 23:15:40,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:15:40,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-10-13 23:15:40,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:40,866 INFO L225 Difference]: With dead ends: 69 [2020-10-13 23:15:40,866 INFO L226 Difference]: Without dead ends: 42 [2020-10-13 23:15:40,867 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:15:40,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-13 23:15:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-13 23:15:40,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-13 23:15:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-13 23:15:40,879 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 60 [2020-10-13 23:15:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:40,879 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-13 23:15:40,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:15:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-13 23:15:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:15:40,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:40,880 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:40,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:15:40,881 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:40,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:40,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1343834815, now seen corresponding path program 7 times [2020-10-13 23:15:40,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:40,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692898062] [2020-10-13 23:15:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:40,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:45,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 23:15:45,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 23:15:45,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:45,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:15:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 23:15:45,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:15:45,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:45,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:45,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:45,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:45,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:45,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:45,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:45,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:45,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:45,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:45,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:45,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:45,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:45,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:45,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:45,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-13 23:15:45,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:45,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:45,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:45,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:15:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:45,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:45,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:46,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:46,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:46,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:46,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:15:46,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:46,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:46,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:46,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:15:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:46,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:46,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:46,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:46,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-13 23:15:46,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:46,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:46,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-13 23:15:46,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692898062] [2020-10-13 23:15:46,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:46,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:15:46,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207608727] [2020-10-13 23:15:46,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:15:46,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:46,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:15:46,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:46,095 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 7 states. [2020-10-13 23:15:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:46,222 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2020-10-13 23:15:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:15:46,223 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 66 [2020-10-13 23:15:46,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:46,224 INFO L225 Difference]: With dead ends: 63 [2020-10-13 23:15:46,224 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 23:15:46,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:15:46,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 23:15:46,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-13 23:15:46,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-13 23:15:46,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-13 23:15:46,235 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 66 [2020-10-13 23:15:46,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:46,236 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-13 23:15:46,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:15:46,236 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-13 23:15:46,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-13 23:15:46,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:46,238 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:46,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:15:46,238 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:46,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:46,239 INFO L82 PathProgramCache]: Analyzing trace with hash 905336639, now seen corresponding path program 8 times [2020-10-13 23:15:46,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:46,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649416939] [2020-10-13 23:15:46,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:46,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:46,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:46,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:46,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:51,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-13 23:15:51,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:51,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:15:51,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:51,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:15:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:15:51,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:15:51,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:51,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:51,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:51,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:51,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:51,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:15:51,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:51,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:51,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:51,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:51,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-13 23:15:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:51,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:51,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:51,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:51,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:15:51,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:51,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:15:51,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:15:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:51,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:51,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:51,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:51,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:15:51,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:51,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:51,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:51,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:51,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:51,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:15:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:51,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:51,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:51,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:51,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:15:51,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:51,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:51,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:51,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:51,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:51,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-13 23:15:51,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649416939] [2020-10-13 23:15:51,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:51,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:15:51,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822641105] [2020-10-13 23:15:51,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:15:51,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:51,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:15:51,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:51,420 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-10-13 23:15:51,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:51,492 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2020-10-13 23:15:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:15:51,493 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-13 23:15:51,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:51,493 INFO L225 Difference]: With dead ends: 78 [2020-10-13 23:15:51,494 INFO L226 Difference]: Without dead ends: 46 [2020-10-13 23:15:51,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:15:51,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-13 23:15:51,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-13 23:15:51,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 23:15:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-13 23:15:51,499 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 68 [2020-10-13 23:15:51,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:51,500 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-13 23:15:51,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:15:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-13 23:15:51,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-13 23:15:51,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:51,501 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:51,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:15:51,501 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:51,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:51,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1678153055, now seen corresponding path program 9 times [2020-10-13 23:15:51,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:51,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072670409] [2020-10-13 23:15:51,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:51,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:51,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:56,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-13 23:15:56,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:15:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:15:56,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:56,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:15:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 23:15:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:15:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:56,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:15:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:56,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:56,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:15:56,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:15:56,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:15:56,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:56,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:56,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:56,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:15:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:56,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:56,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:56,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:56,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 23:15:56,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:56,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:56,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:56,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:56,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 23:15:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:56,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:56,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:56,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:15:56,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:56,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:15:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:56,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-13 23:15:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:56,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:15:56,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:15:56,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:15:56,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:15:56,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:15:56,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:15:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:15:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:15:56,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:15:56,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:15:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-13 23:15:56,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072670409] [2020-10-13 23:15:56,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:15:56,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:15:56,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338352821] [2020-10-13 23:15:56,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:15:56,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:15:56,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:15:56,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:15:56,694 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 8 states. [2020-10-13 23:15:56,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:15:56,784 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2020-10-13 23:15:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:15:56,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-13 23:15:56,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:15:56,785 INFO L225 Difference]: With dead ends: 67 [2020-10-13 23:15:56,785 INFO L226 Difference]: Without dead ends: 48 [2020-10-13 23:15:56,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:15:56,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-13 23:15:56,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-13 23:15:56,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-13 23:15:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-13 23:15:56,791 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 70 [2020-10-13 23:15:56,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:15:56,792 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-13 23:15:56,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:15:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-13 23:15:56,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-13 23:15:56,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:15:56,793 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:15:56,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:15:56,793 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:15:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:15:56,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1748055199, now seen corresponding path program 10 times [2020-10-13 23:15:56,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:15:56,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274676691] [2020-10-13 23:15:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:15:56,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:15:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:15:56,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:01,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-13 23:16:01,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:01,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 23:16:01,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:01,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:01,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:16:01,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-13 23:16:01,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:16:01,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:01,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:01,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:01,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:01,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:01,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:01,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:01,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:01,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:01,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:16:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:01,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:01,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:16:01,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:16:01,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:01,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:01,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:01,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 23:16:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:01,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:01,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:16:01,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-13 23:16:01,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:01,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:01,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:01,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-13 23:16:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:01,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:01,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:16:01,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:01,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:16:01,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:01,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:16:01,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:01,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-13 23:16:01,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274676691] [2020-10-13 23:16:01,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:01,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:16:01,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368981469] [2020-10-13 23:16:01,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:16:01,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:01,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:16:01,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:01,963 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 9 states. [2020-10-13 23:16:02,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:02,073 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2020-10-13 23:16:02,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:16:02,074 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 72 [2020-10-13 23:16:02,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:02,074 INFO L225 Difference]: With dead ends: 69 [2020-10-13 23:16:02,075 INFO L226 Difference]: Without dead ends: 50 [2020-10-13 23:16:02,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-13 23:16:02,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-13 23:16:02,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-13 23:16:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-13 23:16:02,088 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 72 [2020-10-13 23:16:02,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:02,088 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-13 23:16:02,089 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:16:02,089 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-13 23:16:02,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 23:16:02,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:02,090 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:02,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:16:02,091 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:02,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:02,092 INFO L82 PathProgramCache]: Analyzing trace with hash 94271261, now seen corresponding path program 11 times [2020-10-13 23:16:02,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:02,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101656623] [2020-10-13 23:16:02,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:02,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:02,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:02,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:07,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-13 23:16:07,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 23:16:07,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:07,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:16:07,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:16:07,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:16:07,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:07,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:07,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:07,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:07,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:07,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:16:07,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:07,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:07,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:07,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:07,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:16:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:07,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:07,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:16:07,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:07,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:16:07,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:07,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:07,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:16:07,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-13 23:16:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:07,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:07,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:16:07,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:07,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:16:07,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:07,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:16:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:16:07,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:07,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-13 23:16:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:07,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:16:07,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:07,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 23:16:07,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:07,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:16:07,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:07,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 44 proven. 60 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-13 23:16:07,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101656623] [2020-10-13 23:16:07,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:07,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:16:07,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686802530] [2020-10-13 23:16:07,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:16:07,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:07,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:16:07,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:07,337 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 8 states. [2020-10-13 23:16:07,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:07,492 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-10-13 23:16:07,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:16:07,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-10-13 23:16:07,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:07,494 INFO L225 Difference]: With dead ends: 87 [2020-10-13 23:16:07,494 INFO L226 Difference]: Without dead ends: 52 [2020-10-13 23:16:07,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:16:07,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-13 23:16:07,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-13 23:16:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-13 23:16:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-13 23:16:07,510 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 74 [2020-10-13 23:16:07,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:07,510 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-13 23:16:07,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:16:07,510 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-13 23:16:07,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-13 23:16:07,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:07,512 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:07,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:16:07,512 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:07,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:07,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2116022501, now seen corresponding path program 12 times [2020-10-13 23:16:07,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:07,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226082743] [2020-10-13 23:16:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:07,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:07,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:12,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-13 23:16:12,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:16:12,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:12,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:16:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 23:16:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:16:12,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:12,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:12,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:12,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:12,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:12,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:12,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:12,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:12,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:12,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:16:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:12,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:12,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:16:12,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:12,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:16:12,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:12,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:16:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:16:12,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:12,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:16:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:12,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:12,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:16:12,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:12,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 23:16:12,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:12,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:12,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:12,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:16:12,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:12,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:12,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:16:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:12,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:12,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:12,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-13 23:16:12,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:12,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-13 23:16:12,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:12,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:12,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:12,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:16:12,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:12,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2020-10-13 23:16:12,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226082743] [2020-10-13 23:16:12,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:12,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:16:12,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917175791] [2020-10-13 23:16:12,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:16:12,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:12,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:16:12,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:12,739 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 9 states. [2020-10-13 23:16:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:12,959 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-13 23:16:12,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:16:12,959 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 80 [2020-10-13 23:16:12,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:12,961 INFO L225 Difference]: With dead ends: 91 [2020-10-13 23:16:12,961 INFO L226 Difference]: Without dead ends: 54 [2020-10-13 23:16:12,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:16:12,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-13 23:16:12,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-13 23:16:12,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 23:16:12,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-13 23:16:12,978 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 80 [2020-10-13 23:16:12,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:12,978 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-13 23:16:12,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:16:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-13 23:16:12,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-13 23:16:12,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:12,983 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:12,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:16:12,984 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:12,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:12,985 INFO L82 PathProgramCache]: Analyzing trace with hash 139423897, now seen corresponding path program 13 times [2020-10-13 23:16:12,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:12,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798811346] [2020-10-13 23:16:12,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:13,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:13,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:13,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:18,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:18,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 23:16:18,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:18,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:16:18,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:18,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:16:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:18,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:16:18,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:18,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:18,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:18,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:18,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:18,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:18,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:18,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:18,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:18,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:18,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:18,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-13 23:16:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:18,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:18,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:18,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:18,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:16:18,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:18,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:18,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:18,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:18,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:18,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:18,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-13 23:16:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:18,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:18,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:18,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:18,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:18,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:18,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 23:16:18,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:18,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:18,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:18,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:18,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:18,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-13 23:16:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:18,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:18,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:18,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:18,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:18,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:18,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:16:18,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:18,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:18,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:18,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2020-10-13 23:16:18,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798811346] [2020-10-13 23:16:18,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:18,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:16:18,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86402670] [2020-10-13 23:16:18,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:16:18,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:18,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:16:18,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:16:18,206 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-10-13 23:16:18,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:18,299 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2020-10-13 23:16:18,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:16:18,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 86 [2020-10-13 23:16:18,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:18,301 INFO L225 Difference]: With dead ends: 96 [2020-10-13 23:16:18,301 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 23:16:18,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:16:18,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 23:16:18,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-13 23:16:18,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-13 23:16:18,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-13 23:16:18,306 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 86 [2020-10-13 23:16:18,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:18,307 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-13 23:16:18,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:16:18,307 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-13 23:16:18,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-13 23:16:18,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:18,308 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:18,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:16:18,308 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:18,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1947021179, now seen corresponding path program 14 times [2020-10-13 23:16:18,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:18,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870114850] [2020-10-13 23:16:18,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:18,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:18,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:18,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:18,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:23,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-13 23:16:23,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:23,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:16:23,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:23,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-13 23:16:23,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:23,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:23,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:23,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:23,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:23,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:23,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:23,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:23,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:23,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:23,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:23,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:16:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:23,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:23,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:23,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-13 23:16:23,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:23,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:23,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:23,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:23,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:23,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:23,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 23:16:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:23,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:23,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:23,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:23,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:16:23,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:23,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:23,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:23,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:23,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:16:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:23,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:23,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 23:16:23,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:23,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 23:16:23,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:23,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:16:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:23,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:23,515 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2020-10-13 23:16:23,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870114850] [2020-10-13 23:16:23,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:23,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:16:23,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515532871] [2020-10-13 23:16:23,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:16:23,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:23,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:16:23,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:23,518 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 10 states. [2020-10-13 23:16:23,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:23,711 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2020-10-13 23:16:23,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:16:23,711 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-13 23:16:23,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:23,712 INFO L225 Difference]: With dead ends: 97 [2020-10-13 23:16:23,712 INFO L226 Difference]: Without dead ends: 58 [2020-10-13 23:16:23,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:16:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-13 23:16:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-13 23:16:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-13 23:16:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-13 23:16:23,723 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 88 [2020-10-13 23:16:23,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:23,723 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-13 23:16:23,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:16:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-13 23:16:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-13 23:16:23,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:23,725 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:23,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:16:23,725 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:23,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:23,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1856932089, now seen corresponding path program 15 times [2020-10-13 23:16:23,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:23,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615387271] [2020-10-13 23:16:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:23,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:23,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-13 23:16:28,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:28,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:16:28,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:16:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 23:16:28,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:16:28,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:28,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:28,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:28,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:28,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:28,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:16:28,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:28,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:28,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-13 23:16:28,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:28,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:28,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 23:16:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:28,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:28,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:16:28,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:28,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:28,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:28,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:16:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:28,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:28,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:28,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:28,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 23:16:28,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:28,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:28,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:28,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2020-10-13 23:16:28,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615387271] [2020-10-13 23:16:28,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:28,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:16:28,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222119321] [2020-10-13 23:16:28,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:16:28,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:28,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:16:28,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:28,966 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 10 states. [2020-10-13 23:16:29,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:29,060 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2020-10-13 23:16:29,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:16:29,061 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-10-13 23:16:29,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:29,061 INFO L225 Difference]: With dead ends: 85 [2020-10-13 23:16:29,062 INFO L226 Difference]: Without dead ends: 60 [2020-10-13 23:16:29,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:16:29,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-13 23:16:29,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-13 23:16:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-13 23:16:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-13 23:16:29,067 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 94 [2020-10-13 23:16:29,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:29,068 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-13 23:16:29,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:16:29,068 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-13 23:16:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-13 23:16:29,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:29,069 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:29,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:16:29,069 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:29,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1882123511, now seen corresponding path program 16 times [2020-10-13 23:16:29,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:29,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132980944] [2020-10-13 23:16:29,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:29,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:29,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:29,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:29,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:34,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:16:34,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:34,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:16:34,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:34,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:34,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:16:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:34,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:16:34,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:34,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:34,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:34,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:34,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:34,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:16:34,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:34,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:34,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:34,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:34,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:16:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:34,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:34,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:34,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 23:16:34,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:34,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:34,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:34,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:34,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 23:16:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:34,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:34,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:34,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:34,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-13 23:16:34,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:34,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:34,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:34,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:34,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:34,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-13 23:16:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:34,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:34,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:34,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:34,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 23:16:34,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:34,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:34,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:34,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 547 trivial. 0 not checked. [2020-10-13 23:16:34,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132980944] [2020-10-13 23:16:34,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:34,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:16:34,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575644103] [2020-10-13 23:16:34,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:16:34,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:34,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:16:34,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:34,268 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 8 states. [2020-10-13 23:16:34,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:34,359 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2020-10-13 23:16:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:16:34,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 96 [2020-10-13 23:16:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:34,361 INFO L225 Difference]: With dead ends: 106 [2020-10-13 23:16:34,361 INFO L226 Difference]: Without dead ends: 62 [2020-10-13 23:16:34,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:16:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-13 23:16:34,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-13 23:16:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-13 23:16:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-13 23:16:34,365 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 96 [2020-10-13 23:16:34,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:34,366 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-13 23:16:34,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:16:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-13 23:16:34,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-13 23:16:34,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:34,367 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:34,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:16:34,367 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:34,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:34,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1111292249, now seen corresponding path program 17 times [2020-10-13 23:16:34,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:34,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074959932] [2020-10-13 23:16:34,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-13 23:16:39,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:39,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:16:39,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-13 23:16:39,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:39,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:39,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:39,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:39,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:39,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:39,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:16:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:39,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:39,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 23:16:39,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:39,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 23:16:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:39,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:39,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 23:16:39,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:39,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:39,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-13 23:16:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:39,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 23:16:39,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 23:16:39,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:39,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:16:39,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:39,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2020-10-13 23:16:39,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074959932] [2020-10-13 23:16:39,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:39,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:16:39,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61882203] [2020-10-13 23:16:39,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:16:39,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:39,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:16:39,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:39,632 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 11 states. [2020-10-13 23:16:39,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:39,838 INFO L93 Difference]: Finished difference Result 107 states and 117 transitions. [2020-10-13 23:16:39,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:16:39,838 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-10-13 23:16:39,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:39,839 INFO L225 Difference]: With dead ends: 107 [2020-10-13 23:16:39,839 INFO L226 Difference]: Without dead ends: 64 [2020-10-13 23:16:39,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:16:39,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-13 23:16:39,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-13 23:16:39,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-13 23:16:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-13 23:16:39,848 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 98 [2020-10-13 23:16:39,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:39,848 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-13 23:16:39,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:16:39,849 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-13 23:16:39,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-13 23:16:39,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:39,850 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 7, 7, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:39,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:16:39,850 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:39,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:39,851 INFO L82 PathProgramCache]: Analyzing trace with hash 408802135, now seen corresponding path program 18 times [2020-10-13 23:16:39,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:39,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196000009] [2020-10-13 23:16:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:39,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:39,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:44,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-13 23:16:44,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:44,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:16:44,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:44,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:16:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-13 23:16:44,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:16:44,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:44,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:44,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:44,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:44,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:44,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:44,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:44,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:16:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:44,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:44,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:45,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:45,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:45,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:45,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 23:16:45,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:45,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:45,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:45,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:16:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:45,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:45,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:45,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:45,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:45,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:45,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:16:45,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:45,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:45,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:45,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:45,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:16:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:45,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:45,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:45,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:45,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:45,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:45,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 23:16:45,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:45,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:45,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:45,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:45,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2020-10-13 23:16:45,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196000009] [2020-10-13 23:16:45,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:45,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:16:45,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788083937] [2020-10-13 23:16:45,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:16:45,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:45,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:16:45,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:45,128 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 11 states. [2020-10-13 23:16:45,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:45,245 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2020-10-13 23:16:45,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:16:45,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-10-13 23:16:45,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:45,248 INFO L225 Difference]: With dead ends: 93 [2020-10-13 23:16:45,248 INFO L226 Difference]: Without dead ends: 66 [2020-10-13 23:16:45,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:16:45,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-13 23:16:45,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-13 23:16:45,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 23:16:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-13 23:16:45,255 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 104 [2020-10-13 23:16:45,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:45,255 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-13 23:16:45,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:16:45,255 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-13 23:16:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-13 23:16:45,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:45,256 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:45,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:16:45,257 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:45,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:45,257 INFO L82 PathProgramCache]: Analyzing trace with hash -577108011, now seen corresponding path program 19 times [2020-10-13 23:16:45,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:45,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671640349] [2020-10-13 23:16:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:45,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:45,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:50,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 23:16:50,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:50,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-13 23:16:50,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:50,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:16:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:16:50,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:16:50,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:50,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:50,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:50,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:50,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:16:50,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:50,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:50,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:50,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:50,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:16:50,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:50,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:50,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:50,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:50,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:16:50,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:50,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:50,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:50,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:50,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:16:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:50,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:50,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:50,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:50,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-13 23:16:50,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:50,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:50,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:50,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:50,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:50,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:50,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:16:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:50,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:50,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:50,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:50,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 23:16:50,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:50,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 728 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-13 23:16:50,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671640349] [2020-10-13 23:16:50,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:50,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:16:50,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296683885] [2020-10-13 23:16:50,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:16:50,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:50,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:16:50,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:50,512 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 9 states. [2020-10-13 23:16:50,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:50,609 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2020-10-13 23:16:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:16:50,610 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-13 23:16:50,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:50,610 INFO L225 Difference]: With dead ends: 116 [2020-10-13 23:16:50,611 INFO L226 Difference]: Without dead ends: 68 [2020-10-13 23:16:50,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:16:50,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-13 23:16:50,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-13 23:16:50,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 23:16:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-13 23:16:50,618 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 106 [2020-10-13 23:16:50,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:50,618 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-13 23:16:50,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:16:50,618 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-13 23:16:50,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-13 23:16:50,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:50,621 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:50,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:16:50,621 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:50,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:50,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1374322249, now seen corresponding path program 20 times [2020-10-13 23:16:50,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:50,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477713313] [2020-10-13 23:16:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:50,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:50,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-13 23:16:55,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:16:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:16:55,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:16:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 23:16:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:16:55,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:16:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:16:55,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:16:55,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:55,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:16:55,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:55,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:16:55,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:16:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:55,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:16:55,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 23:16:55,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:16:55,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:16:55,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:16:55,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-13 23:16:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:55,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:55,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-13 23:16:55,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:55,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:55,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:55,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-13 23:16:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:55,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:55,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:16:55,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 23:16:55,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:16:55,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-13 23:16:55,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:16:55,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:16:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:16:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:16:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:16:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:16:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2020-10-13 23:16:55,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477713313] [2020-10-13 23:16:55,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:16:55,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:16:55,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967935723] [2020-10-13 23:16:55,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:16:55,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:16:55,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:16:55,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:16:55,882 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 12 states. [2020-10-13 23:16:56,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:16:56,122 INFO L93 Difference]: Finished difference Result 117 states and 127 transitions. [2020-10-13 23:16:56,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:16:56,122 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-10-13 23:16:56,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:16:56,123 INFO L225 Difference]: With dead ends: 117 [2020-10-13 23:16:56,124 INFO L226 Difference]: Without dead ends: 70 [2020-10-13 23:16:56,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:16:56,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-13 23:16:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-13 23:16:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-13 23:16:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-13 23:16:56,130 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 108 [2020-10-13 23:16:56,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:16:56,130 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-13 23:16:56,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:16:56,130 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-13 23:16:56,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-13 23:16:56,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:16:56,132 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:16:56,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:16:56,132 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:16:56,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:16:56,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1129888821, now seen corresponding path program 21 times [2020-10-13 23:16:56,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:16:56,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026073016] [2020-10-13 23:16:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:16:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:16:56,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:56,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:56,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:16:56,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:01,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-13 23:17:01,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:01,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 23:17:01,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:01,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:17:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-13 23:17:01,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:17:01,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:01,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:01,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:01,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:01,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:01,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:01,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:01,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:01,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:01,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:17:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:01,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:01,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:17:01,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:01,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-13 23:17:01,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:01,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:01,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:17:01,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:01,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:17:01,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:01,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 23:17:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:01,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:01,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:17:01,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:01,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 23:17:01,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:01,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:17:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:01,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:01,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:17:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:01,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:01,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:17:01,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:01,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-13 23:17:01,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:01,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:17:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:01,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 449 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2020-10-13 23:17:01,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026073016] [2020-10-13 23:17:01,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:01,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:17:01,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62808143] [2020-10-13 23:17:01,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:17:01,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:01,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:17:01,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:17:01,460 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 13 states. [2020-10-13 23:17:01,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:01,691 INFO L93 Difference]: Finished difference Result 121 states and 131 transitions. [2020-10-13 23:17:01,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:17:01,691 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 114 [2020-10-13 23:17:01,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:01,692 INFO L225 Difference]: With dead ends: 121 [2020-10-13 23:17:01,692 INFO L226 Difference]: Without dead ends: 72 [2020-10-13 23:17:01,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:17:01,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-13 23:17:01,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-13 23:17:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 23:17:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-13 23:17:01,699 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 114 [2020-10-13 23:17:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:01,699 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-13 23:17:01,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:17:01,699 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-13 23:17:01,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-13 23:17:01,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:01,700 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 8, 8, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:01,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:17:01,701 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:01,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:01,701 INFO L82 PathProgramCache]: Analyzing trace with hash 710139955, now seen corresponding path program 22 times [2020-10-13 23:17:01,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:01,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95398443] [2020-10-13 23:17:01,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:01,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:01,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:06,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-13 23:17:06,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:06,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 23:17:06,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:06,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:06,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:17:06,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 23:17:06,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:17:06,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:06,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:06,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:06,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:06,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:06,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:06,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:06,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:06,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:06,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:06,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:06,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:06,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:17:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:06,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:06,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:06,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 23:17:06,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:06,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:06,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:06,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:17:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:06,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:06,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:06,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 23:17:06,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:06,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:06,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:06,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:06,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:06,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:06,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:17:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:06,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:06,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:07,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:07,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:07,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 23:17:07,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:07,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:07,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:07,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:07,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1075 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2020-10-13 23:17:07,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95398443] [2020-10-13 23:17:07,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:07,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:17:07,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300033612] [2020-10-13 23:17:07,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:17:07,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:07,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:17:07,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:17:07,055 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 12 states. [2020-10-13 23:17:07,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:07,152 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2020-10-13 23:17:07,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:17:07,152 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 120 [2020-10-13 23:17:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:07,153 INFO L225 Difference]: With dead ends: 105 [2020-10-13 23:17:07,153 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 23:17:07,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:17:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 23:17:07,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-13 23:17:07,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 23:17:07,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-13 23:17:07,159 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 120 [2020-10-13 23:17:07,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:07,159 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-13 23:17:07,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:17:07,159 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-13 23:17:07,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-13 23:17:07,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:07,161 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 9, 9, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:07,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:17:07,161 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:07,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:07,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1919537743, now seen corresponding path program 23 times [2020-10-13 23:17:07,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:07,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [12670875] [2020-10-13 23:17:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:07,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:07,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:12,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-13 23:17:12,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:12,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:17:12,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:12,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:12,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:17:12,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-13 23:17:12,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:17:12,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:12,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:12,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:12,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:12,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:12,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:12,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:12,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:12,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:12,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:17:12,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:17:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:12,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:12,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:12,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:12,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 23:17:12,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:12,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:12,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:12,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:12,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:12,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:12,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:17:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:12,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:12,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:12,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 23:17:12,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:12,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:12,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:12,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-13 23:17:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:12,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:12,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:12,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:12,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-13 23:17:12,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:12,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:12,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:12,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 1011 trivial. 0 not checked. [2020-10-13 23:17:12,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [12670875] [2020-10-13 23:17:12,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:12,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:17:12,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036618151] [2020-10-13 23:17:12,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:17:12,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:12,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:17:12,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:17:12,502 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 13 states. [2020-10-13 23:17:12,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:12,601 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2020-10-13 23:17:12,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:17:12,602 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 122 [2020-10-13 23:17:12,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:12,603 INFO L225 Difference]: With dead ends: 107 [2020-10-13 23:17:12,603 INFO L226 Difference]: Without dead ends: 76 [2020-10-13 23:17:12,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:17:12,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-13 23:17:12,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-13 23:17:12,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-13 23:17:12,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-13 23:17:12,609 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 122 [2020-10-13 23:17:12,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:12,609 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-13 23:17:12,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:17:12,609 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-13 23:17:12,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-13 23:17:12,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:12,611 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:12,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:17:12,611 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:12,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:12,611 INFO L82 PathProgramCache]: Analyzing trace with hash 695931823, now seen corresponding path program 24 times [2020-10-13 23:17:12,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:12,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504975934] [2020-10-13 23:17:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:12,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:12,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:17,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-13 23:17:17,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:17,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-13 23:17:17,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:17,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:17:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:17,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:17:17,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:17,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:17,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:17,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:17,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:17,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:17,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:17,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:17,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:17,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:17,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:17:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:17,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:17,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:17,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:17,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 23:17:17,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:17,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:17,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:17,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:17,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:17:17,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:17,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:17,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:17,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:17,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 23:17:17,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:17,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:17,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:17,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:17,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:17,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:17,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:17:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:17,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:17,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:17,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:17,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:17,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-13 23:17:17,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:17,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:17,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:17,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:17,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2020-10-13 23:17:17,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504975934] [2020-10-13 23:17:17,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:17,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:17:17,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908099742] [2020-10-13 23:17:17,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:17:17,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:17,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:17:17,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:17:17,947 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 10 states. [2020-10-13 23:17:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:18,039 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-10-13 23:17:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:17:18,039 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 124 [2020-10-13 23:17:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:18,040 INFO L225 Difference]: With dead ends: 134 [2020-10-13 23:17:18,040 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 23:17:18,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:17:18,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 23:17:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 23:17:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:17:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-13 23:17:18,053 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 124 [2020-10-13 23:17:18,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:18,053 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-13 23:17:18,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:17:18,053 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-13 23:17:18,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-13 23:17:18,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:18,055 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 10, 10, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:18,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:17:18,055 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:18,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:18,056 INFO L82 PathProgramCache]: Analyzing trace with hash 164927761, now seen corresponding path program 25 times [2020-10-13 23:17:18,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:18,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968039239] [2020-10-13 23:17:18,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:18,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:18,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:23,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-13 23:17:23,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:23,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-13 23:17:23,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:23,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:17:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-13 23:17:23,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:17:23,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:23,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:23,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:23,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:23,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:23,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:23,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:23,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:23,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:23,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:23,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:17:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:23,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:23,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:23,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 23:17:23,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:23,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:23,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:23,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:23,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:23,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:23,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 23:17:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:23,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:23,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:23,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:23,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-13 23:17:23,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:23,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:23,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:23,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:23,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:23,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:23,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:17:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:23,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:23,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:23,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:23,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-13 23:17:23,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:23,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:23,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:23,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:23,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 1024 trivial. 0 not checked. [2020-10-13 23:17:23,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968039239] [2020-10-13 23:17:23,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:23,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:17:23,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266874673] [2020-10-13 23:17:23,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:17:23,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:23,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:17:23,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:17:23,420 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 14 states. [2020-10-13 23:17:23,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:23,560 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2020-10-13 23:17:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:17:23,560 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-13 23:17:23,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:23,561 INFO L225 Difference]: With dead ends: 111 [2020-10-13 23:17:23,562 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 23:17:23,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:17:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 23:17:23,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-13 23:17:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-13 23:17:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-13 23:17:23,567 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 126 [2020-10-13 23:17:23,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:23,568 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-13 23:17:23,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:17:23,568 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-13 23:17:23,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 23:17:23,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:23,569 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:23,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:17:23,570 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:23,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:23,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1882446065, now seen corresponding path program 26 times [2020-10-13 23:17:23,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:23,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193006100] [2020-10-13 23:17:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:23,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:23,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:24,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:28,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-13 23:17:28,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:28,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:17:28,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:28,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:28,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:17:28,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-13 23:17:28,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:17:28,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:28,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:28,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:28,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:28,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:28,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:28,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:17:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:28,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:28,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:28,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-13 23:17:28,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:28,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:17:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:17:28,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:28,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 23:17:28,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:28,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:28,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:28,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-13 23:17:28,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:28,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:28,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:28,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:28,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:28,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:28,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 23:17:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:28,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:28,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:28,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 23:17:28,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-13 23:17:28,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:28,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:17:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:28,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1145 backedges. 0 proven. 548 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2020-10-13 23:17:28,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193006100] [2020-10-13 23:17:28,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:28,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:17:28,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603841401] [2020-10-13 23:17:28,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:17:28,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:28,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:17:28,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:17:28,931 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 14 states. [2020-10-13 23:17:29,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:29,223 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-10-13 23:17:29,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:17:29,224 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 128 [2020-10-13 23:17:29,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:29,225 INFO L225 Difference]: With dead ends: 139 [2020-10-13 23:17:29,225 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 23:17:29,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:17:29,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 23:17:29,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 23:17:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 23:17:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-13 23:17:29,232 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 128 [2020-10-13 23:17:29,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:29,233 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-13 23:17:29,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:17:29,233 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-13 23:17:29,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-13 23:17:29,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:29,235 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:29,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:17:29,235 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:29,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:29,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1727718259, now seen corresponding path program 27 times [2020-10-13 23:17:29,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:29,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599201099] [2020-10-13 23:17:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:29,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:29,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:34,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-13 23:17:34,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:34,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:17:34,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:34,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:17:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:17:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 23:17:34,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:34,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:34,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:34,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:34,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:34,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:34,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:34,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:34,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:34,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:17:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:34,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:34,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:34,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:34,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 23:17:34,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:34,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:34,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:17:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:34,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:34,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:34,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-13 23:17:34,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:34,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:34,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:34,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:34,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:34,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:34,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:17:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:34,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:34,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:34,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 23:17:34,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:34,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:34,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:34,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:34,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:34,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2020-10-13 23:17:34,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599201099] [2020-10-13 23:17:34,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:34,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:17:34,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790420590] [2020-10-13 23:17:34,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:17:34,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:34,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:17:34,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:17:34,661 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 11 states. [2020-10-13 23:17:34,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:34,760 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2020-10-13 23:17:34,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:17:34,760 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2020-10-13 23:17:34,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:34,761 INFO L225 Difference]: With dead ends: 144 [2020-10-13 23:17:34,761 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 23:17:34,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:17:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 23:17:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-13 23:17:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 23:17:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-13 23:17:34,767 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 134 [2020-10-13 23:17:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:34,767 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-13 23:17:34,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:17:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-13 23:17:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 23:17:34,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:34,769 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:34,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:17:34,769 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:34,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:34,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1854459759, now seen corresponding path program 28 times [2020-10-13 23:17:34,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:34,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853611838] [2020-10-13 23:17:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:34,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:39,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 23:17:39,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:39,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5048 [2020-10-13 23:17:39,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:39,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:39,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:39,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 23:17:39,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:39,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:39,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:39,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:39,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:39,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:39,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:39,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:39,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:39,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:39,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:39,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:39,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:39,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:39,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:39,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:39,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:39,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:39,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-13 23:17:39,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:39,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:39,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:39,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:39,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-13 23:17:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:39,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:40,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:40,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-13 23:17:40,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:40,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:40,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:40,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:40,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:17:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:40,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 23:17:40,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:40,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 23:17:40,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:40,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:17:40,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:40,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:40,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 268 proven. 389 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2020-10-13 23:17:40,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853611838] [2020-10-13 23:17:40,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:40,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:17:40,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919244968] [2020-10-13 23:17:40,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:17:40,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:40,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:17:40,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:40,226 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 15 states. [2020-10-13 23:17:40,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:40,543 INFO L93 Difference]: Finished difference Result 145 states and 155 transitions. [2020-10-13 23:17:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:17:40,544 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 136 [2020-10-13 23:17:40,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:40,545 INFO L225 Difference]: With dead ends: 145 [2020-10-13 23:17:40,546 INFO L226 Difference]: Without dead ends: 86 [2020-10-13 23:17:40,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:17:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-13 23:17:40,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-13 23:17:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 23:17:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-13 23:17:40,552 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 136 [2020-10-13 23:17:40,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:40,552 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-13 23:17:40,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:17:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-13 23:17:40,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-13 23:17:40,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:40,554 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:40,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:17:40,554 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:40,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:40,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1750809837, now seen corresponding path program 29 times [2020-10-13 23:17:40,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:40,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602449619] [2020-10-13 23:17:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:40,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:40,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:45,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:45,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-13 23:17:45,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:45,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-13 23:17:45,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:45,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 23:17:45,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:45,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:45,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:45,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:45,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:45,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:45,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:45,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:45,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:45,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:45,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:45,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:45,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:45,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:45,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:45,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 23:17:45,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:45,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:45,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:17:45,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:45,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:45,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 23:17:45,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:45,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:45,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:45,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:45,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:45,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 23:17:45,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:45,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:17:45,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:45,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:17:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:45,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:46,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 23:17:46,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:46,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 23:17:46,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:46,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:17:46,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:46,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 0 proven. 776 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2020-10-13 23:17:46,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602449619] [2020-10-13 23:17:46,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:46,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:17:46,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595985258] [2020-10-13 23:17:46,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:17:46,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:46,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:17:46,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:46,081 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 16 states. [2020-10-13 23:17:46,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:46,395 INFO L93 Difference]: Finished difference Result 149 states and 159 transitions. [2020-10-13 23:17:46,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:17:46,396 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 142 [2020-10-13 23:17:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:46,397 INFO L225 Difference]: With dead ends: 149 [2020-10-13 23:17:46,397 INFO L226 Difference]: Without dead ends: 88 [2020-10-13 23:17:46,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:17:46,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-13 23:17:46,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-13 23:17:46,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-13 23:17:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-13 23:17:46,403 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 142 [2020-10-13 23:17:46,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:46,403 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-13 23:17:46,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:17:46,403 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-13 23:17:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-13 23:17:46,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:46,404 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 11, 11, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:46,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:17:46,405 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:46,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:46,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1792945173, now seen corresponding path program 30 times [2020-10-13 23:17:46,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:46,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577511791] [2020-10-13 23:17:46,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:46,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:46,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:51,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-13 23:17:51,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:51,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:17:51,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:51,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:17:51,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 23:17:51,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 23:17:51,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:51,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:51,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:51,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:51,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:51,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:51,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:51,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:51,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:51,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:51,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:51,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:51,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:51,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 23:17:51,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:51,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:51,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:51,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:17:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:51,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:51,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:51,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 23:17:51,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:51,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:51,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:51,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:17:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:51,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:51,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:51,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:51,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-13 23:17:51,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:51,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:51,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:17:51,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:51,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:51,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1799 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-13 23:17:51,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577511791] [2020-10-13 23:17:51,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:51,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:17:51,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541871419] [2020-10-13 23:17:51,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:17:51,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:51,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:17:51,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:51,872 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 15 states. [2020-10-13 23:17:52,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:52,014 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2020-10-13 23:17:52,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:17:52,014 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 148 [2020-10-13 23:17:52,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:52,015 INFO L225 Difference]: With dead ends: 127 [2020-10-13 23:17:52,015 INFO L226 Difference]: Without dead ends: 90 [2020-10-13 23:17:52,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:17:52,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-13 23:17:52,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-13 23:17:52,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-13 23:17:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-13 23:17:52,021 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 148 [2020-10-13 23:17:52,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:52,021 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-13 23:17:52,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:17:52,022 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-13 23:17:52,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-13 23:17:52,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:52,023 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 12, 12, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:52,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:17:52,023 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:52,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:52,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1894456471, now seen corresponding path program 31 times [2020-10-13 23:17:52,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:52,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771770610] [2020-10-13 23:17:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:52,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:52,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:57,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-13 23:17:57,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:17:57,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-13 23:17:57,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:57,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:17:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-13 23:17:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:17:57,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:57,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:17:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:57,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:57,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:17:57,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:17:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:17:57,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:57,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:57,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:17:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:57,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:57,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:57,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 23:17:57,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:57,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:57,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:57,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:17:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:57,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:57,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:57,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:57,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-13 23:17:57,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:57,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:17:57,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:57,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:57,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:17:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:57,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:17:57,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:17:57,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:17:57,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-13 23:17:57,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:17:57,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:17:57,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:17:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:17:57,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:17:57,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:17:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1822 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2020-10-13 23:17:57,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771770610] [2020-10-13 23:17:57,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:17:57,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:17:57,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711098957] [2020-10-13 23:17:57,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:17:57,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:17:57,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:17:57,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:57,565 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 16 states. [2020-10-13 23:17:57,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:17:57,713 INFO L93 Difference]: Finished difference Result 129 states and 134 transitions. [2020-10-13 23:17:57,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:17:57,713 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 150 [2020-10-13 23:17:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:17:57,714 INFO L225 Difference]: With dead ends: 129 [2020-10-13 23:17:57,714 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 23:17:57,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:17:57,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 23:17:57,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-13 23:17:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-13 23:17:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-13 23:17:57,721 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 150 [2020-10-13 23:17:57,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:17:57,721 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-13 23:17:57,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:17:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-13 23:17:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-13 23:17:57,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:17:57,723 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 8, 8, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:17:57,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:17:57,723 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:17:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:17:57,723 INFO L82 PathProgramCache]: Analyzing trace with hash -662566041, now seen corresponding path program 32 times [2020-10-13 23:17:57,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:17:57,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037293524] [2020-10-13 23:17:57,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:17:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:17:57,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:17:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:02,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:02,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-13 23:18:02,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:02,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-13 23:18:02,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:02,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:18:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:18:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:02,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:02,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:02,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:02,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:02,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:02,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:02,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:02,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:02,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:02,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:18:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:02,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:02,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:02,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:02,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:02,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-13 23:18:02,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:02,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:18:02,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:02,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:02,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:18:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:02,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:03,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:03,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:03,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 23:18:03,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:03,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:18:03,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:03,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:03,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:18:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:03,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:03,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:03,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:03,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-13 23:18:03,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:03,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:18:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:03,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1847 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 1783 trivial. 0 not checked. [2020-10-13 23:18:03,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037293524] [2020-10-13 23:18:03,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:03,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:18:03,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877822830] [2020-10-13 23:18:03,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:18:03,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:03,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:18:03,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:18:03,145 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 12 states. [2020-10-13 23:18:03,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:03,263 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2020-10-13 23:18:03,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:18:03,264 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 152 [2020-10-13 23:18:03,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:03,265 INFO L225 Difference]: With dead ends: 162 [2020-10-13 23:18:03,265 INFO L226 Difference]: Without dead ends: 94 [2020-10-13 23:18:03,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:18:03,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-13 23:18:03,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-13 23:18:03,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-13 23:18:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-13 23:18:03,280 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 152 [2020-10-13 23:18:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:03,280 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-13 23:18:03,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:18:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-13 23:18:03,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-13 23:18:03,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:03,281 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 13, 13, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:03,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:18:03,282 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:03,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:03,283 INFO L82 PathProgramCache]: Analyzing trace with hash 2074577353, now seen corresponding path program 33 times [2020-10-13 23:18:03,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:03,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47020004] [2020-10-13 23:18:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:08,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:08,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-13 23:18:08,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:18:08,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:08,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:18:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-13 23:18:08,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:18:08,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:08,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:08,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:08,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:08,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:08,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:08,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:08,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:08,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:08,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:08,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:08,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:08,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:08,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:18:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:08,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:08,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:08,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:08,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:08,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-13 23:18:08,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:08,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:18:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:18:08,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:08,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-13 23:18:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:08,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:08,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:08,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:08,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-13 23:18:08,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:08,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:18:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:08,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:08,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 23:18:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:08,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:08,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:08,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-13 23:18:08,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:08,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 23:18:08,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:08,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:08,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:18:08,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:08,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 0 proven. 905 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2020-10-13 23:18:08,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47020004] [2020-10-13 23:18:08,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:08,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:18:08,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436231230] [2020-10-13 23:18:08,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:18:08,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:08,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:18:08,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:18:08,736 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 17 states. [2020-10-13 23:18:09,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:09,099 INFO L93 Difference]: Finished difference Result 163 states and 173 transitions. [2020-10-13 23:18:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:18:09,099 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 154 [2020-10-13 23:18:09,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:09,101 INFO L225 Difference]: With dead ends: 163 [2020-10-13 23:18:09,101 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 23:18:09,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:18:09,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 23:18:09,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-13 23:18:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 23:18:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-13 23:18:09,109 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 154 [2020-10-13 23:18:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:09,109 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-13 23:18:09,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:18:09,109 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-13 23:18:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-13 23:18:09,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:09,110 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 13, 13, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:09,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:18:09,111 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:09,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:09,111 INFO L82 PathProgramCache]: Analyzing trace with hash 827214279, now seen corresponding path program 34 times [2020-10-13 23:18:09,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:09,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785719800] [2020-10-13 23:18:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:09,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:09,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:14,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:14,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-13 23:18:14,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:14,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 23:18:14,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:14,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:18:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-13 23:18:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 23:18:14,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:14,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:14,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:14,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:14,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:14,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:14,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:14,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:14,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:14,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:14,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:14,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:14,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:14,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:18:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:14,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:14,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:14,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:14,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:14,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:14,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 23:18:14,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:14,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:14,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:14,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:14,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:14,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:14,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:18:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:14,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:14,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:14,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:14,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:14,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:14,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-13 23:18:14,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:14,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:14,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:14,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:14,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:14,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:14,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:18:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:14,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:14,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:14,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:14,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:14,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:14,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 23:18:14,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:14,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:14,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:14,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:14,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2020-10-13 23:18:14,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785719800] [2020-10-13 23:18:14,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:14,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:18:14,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606090661] [2020-10-13 23:18:14,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:18:14,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:14,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:18:14,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:18:14,651 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 17 states. [2020-10-13 23:18:14,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:14,772 INFO L93 Difference]: Finished difference Result 137 states and 142 transitions. [2020-10-13 23:18:14,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:18:14,773 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 160 [2020-10-13 23:18:14,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:14,774 INFO L225 Difference]: With dead ends: 137 [2020-10-13 23:18:14,774 INFO L226 Difference]: Without dead ends: 98 [2020-10-13 23:18:14,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:18:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-13 23:18:14,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-13 23:18:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-13 23:18:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2020-10-13 23:18:14,780 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 160 [2020-10-13 23:18:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:14,781 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2020-10-13 23:18:14,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:18:14,781 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2020-10-13 23:18:14,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-13 23:18:14,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:14,782 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:14,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:18:14,783 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:14,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1535622587, now seen corresponding path program 35 times [2020-10-13 23:18:14,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:14,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084387290] [2020-10-13 23:18:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:14,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:14,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:14,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:14,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:14,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:19,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:19,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-13 23:18:19,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 23:18:19,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:19,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:18:19,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:19,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:18:19,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:19,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:19,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:19,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:19,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:19,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:19,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:19,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:19,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:19,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:19,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:18:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:19,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:19,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:20,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:20,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:20,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:20,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-13 23:18:20,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:20,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:20,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:20,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:20,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:20,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:20,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-13 23:18:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:20,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:20,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:20,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:20,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:20,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-13 23:18:20,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:20,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:20,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:20,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:18:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:20,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:20,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:20,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:20,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:20,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-13 23:18:20,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:20,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:20,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:20,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:20,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:20,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2140 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2020-10-13 23:18:20,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084387290] [2020-10-13 23:18:20,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:20,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:18:20,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635896090] [2020-10-13 23:18:20,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:18:20,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:20,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:18:20,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:18:20,285 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 13 states. [2020-10-13 23:18:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:20,377 INFO L93 Difference]: Finished difference Result 172 states and 180 transitions. [2020-10-13 23:18:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:18:20,377 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-10-13 23:18:20,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:20,378 INFO L225 Difference]: With dead ends: 172 [2020-10-13 23:18:20,378 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 23:18:20,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:18:20,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 23:18:20,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2020-10-13 23:18:20,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-13 23:18:20,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2020-10-13 23:18:20,385 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 162 [2020-10-13 23:18:20,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:20,385 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2020-10-13 23:18:20,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:18:20,385 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2020-10-13 23:18:20,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-13 23:18:20,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:20,386 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 14, 14, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:20,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:18:20,386 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:20,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:20,387 INFO L82 PathProgramCache]: Analyzing trace with hash -320557529, now seen corresponding path program 36 times [2020-10-13 23:18:20,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:20,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61428045] [2020-10-13 23:18:20,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:20,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:20,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:20,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:20,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:25,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:25,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-13 23:18:25,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:25,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 23:18:25,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:25,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:25,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:18:25,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-13 23:18:25,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:18:25,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:25,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:25,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:25,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:25,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:25,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:25,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:25,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:25,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:25,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:25,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:25,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:18:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:25,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:25,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:25,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:25,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:25,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-13 23:18:25,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:25,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:25,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:25,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:25,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:25,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:25,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-13 23:18:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:25,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:25,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:25,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:25,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:25,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-13 23:18:25,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:25,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:18:25,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:25,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:18:25,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:25,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 23:18:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:25,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:26,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:26,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:18:26,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:26,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-13 23:18:26,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:26,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:18:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:26,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2159 backedges. 424 proven. 620 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2020-10-13 23:18:26,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61428045] [2020-10-13 23:18:26,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:26,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:18:26,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490195304] [2020-10-13 23:18:26,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:18:26,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:26,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:18:26,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:18:26,022 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand 18 states. [2020-10-13 23:18:26,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:26,381 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2020-10-13 23:18:26,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:18:26,382 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 164 [2020-10-13 23:18:26,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:26,383 INFO L225 Difference]: With dead ends: 173 [2020-10-13 23:18:26,383 INFO L226 Difference]: Without dead ends: 102 [2020-10-13 23:18:26,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-13 23:18:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-13 23:18:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-10-13 23:18:26,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 23:18:26,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2020-10-13 23:18:26,389 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 164 [2020-10-13 23:18:26,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:26,390 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2020-10-13 23:18:26,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:18:26,390 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2020-10-13 23:18:26,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-13 23:18:26,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:26,391 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 14, 14, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:26,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:18:26,391 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:26,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:26,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1082085029, now seen corresponding path program 37 times [2020-10-13 23:18:26,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:26,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713438947] [2020-10-13 23:18:26,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:26,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:26,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:26,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:26,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:26,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:31,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:31,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-13 23:18:31,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:31,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-13 23:18:31,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:31,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:31,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:18:31,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-13 23:18:31,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 23:18:31,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:31,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:31,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:31,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:31,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:31,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:31,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:18:31,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:31,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:31,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:31,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:31,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:18:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:31,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:31,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:31,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:31,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:31,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 23:18:31,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:31,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:31,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:31,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:31,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:18:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:31,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:31,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:31,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:31,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:31,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:31,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-13 23:18:31,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:31,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:31,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:31,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:18:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:31,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:32,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:32,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:32,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:32,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 23:18:32,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:32,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:32,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 2230 trivial. 0 not checked. [2020-10-13 23:18:32,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713438947] [2020-10-13 23:18:32,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:32,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:18:32,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777912132] [2020-10-13 23:18:32,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:18:32,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:32,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:18:32,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:18:32,105 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand 18 states. [2020-10-13 23:18:32,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:32,281 INFO L93 Difference]: Finished difference Result 145 states and 150 transitions. [2020-10-13 23:18:32,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:18:32,282 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 170 [2020-10-13 23:18:32,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:32,283 INFO L225 Difference]: With dead ends: 145 [2020-10-13 23:18:32,283 INFO L226 Difference]: Without dead ends: 104 [2020-10-13 23:18:32,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:18:32,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-13 23:18:32,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2020-10-13 23:18:32,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-13 23:18:32,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2020-10-13 23:18:32,291 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 170 [2020-10-13 23:18:32,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:32,291 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2020-10-13 23:18:32,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:18:32,291 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2020-10-13 23:18:32,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-13 23:18:32,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:32,293 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:32,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:18:32,293 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:32,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:32,293 INFO L82 PathProgramCache]: Analyzing trace with hash -763594845, now seen corresponding path program 38 times [2020-10-13 23:18:32,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:32,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814359820] [2020-10-13 23:18:32,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:32,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:32,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:32,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:32,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:37,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-13 23:18:37,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-13 23:18:37,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:37,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:18:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:37,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 23:18:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:37,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:37,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:37,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:37,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:37,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:37,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:18:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:37,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:37,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:37,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:37,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-13 23:18:37,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:37,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:37,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:37,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:37,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:18:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:37,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:37,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:37,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:37,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-13 23:18:37,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:37,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:37,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:37,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:37,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:37,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:37,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:18:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:37,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:37,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:37,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 23:18:37,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:37,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:37,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:37,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:37,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:37,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2455 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2020-10-13 23:18:37,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814359820] [2020-10-13 23:18:37,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:37,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:18:37,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46697630] [2020-10-13 23:18:37,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:18:37,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:37,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:18:37,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:18:37,944 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand 14 states. [2020-10-13 23:18:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:38,039 INFO L93 Difference]: Finished difference Result 182 states and 190 transitions. [2020-10-13 23:18:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:18:38,040 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2020-10-13 23:18:38,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:38,041 INFO L225 Difference]: With dead ends: 182 [2020-10-13 23:18:38,041 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 23:18:38,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:18:38,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 23:18:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-10-13 23:18:38,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-13 23:18:38,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2020-10-13 23:18:38,047 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 172 [2020-10-13 23:18:38,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:38,047 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2020-10-13 23:18:38,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:18:38,047 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2020-10-13 23:18:38,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-13 23:18:38,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:38,049 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 15, 15, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:38,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:18:38,049 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:38,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:38,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1937444603, now seen corresponding path program 39 times [2020-10-13 23:18:38,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:38,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209015210] [2020-10-13 23:18:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:38,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:38,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:38,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:38,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:43,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:43,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-13 23:18:43,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:43,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:18:43,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:43,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:43,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:18:43,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-13 23:18:43,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:18:43,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:43,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:43,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:43,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:43,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:43,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:43,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:43,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:43,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:18:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:43,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:43,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:43,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:43,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:43,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:43,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-13 23:18:43,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:43,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:43,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:43,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:43,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:18:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:43,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:43,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:43,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:43,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:43,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-13 23:18:43,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:43,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:43,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:43,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:43,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:43,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:43,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 23:18:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:43,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:43,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:43,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:43,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-13 23:18:43,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:43,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-13 23:18:43,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:43,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:18:43,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:43,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2476 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 2251 trivial. 0 not checked. [2020-10-13 23:18:43,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209015210] [2020-10-13 23:18:43,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:43,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:18:43,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116413353] [2020-10-13 23:18:43,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:18:43,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:43,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:18:43,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:18:43,704 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand 19 states. [2020-10-13 23:18:43,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:43,826 INFO L93 Difference]: Finished difference Result 149 states and 154 transitions. [2020-10-13 23:18:43,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:18:43,827 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 174 [2020-10-13 23:18:43,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:43,828 INFO L225 Difference]: With dead ends: 149 [2020-10-13 23:18:43,828 INFO L226 Difference]: Without dead ends: 108 [2020-10-13 23:18:43,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:18:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-13 23:18:43,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-10-13 23:18:43,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-13 23:18:43,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-10-13 23:18:43,834 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 174 [2020-10-13 23:18:43,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:43,835 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-10-13 23:18:43,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:18:43,835 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-10-13 23:18:43,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 23:18:43,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:43,836 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 16, 16, 11, 11, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:43,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:18:43,837 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:43,837 INFO L82 PathProgramCache]: Analyzing trace with hash 866320899, now seen corresponding path program 40 times [2020-10-13 23:18:43,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:43,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694264921] [2020-10-13 23:18:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:43,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:43,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:45,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking...