/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 22:08:25,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 22:08:25,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 22:08:25,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 22:08:25,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 22:08:25,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 22:08:25,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 22:08:25,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 22:08:25,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 22:08:25,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 22:08:25,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 22:08:25,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 22:08:25,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 22:08:25,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 22:08:25,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 22:08:25,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 22:08:25,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 22:08:25,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 22:08:25,169 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 22:08:25,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 22:08:25,181 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 22:08:25,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 22:08:25,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 22:08:25,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 22:08:25,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 22:08:25,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 22:08:25,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 22:08:25,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 22:08:25,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 22:08:25,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 22:08:25,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 22:08:25,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 22:08:25,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 22:08:25,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 22:08:25,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 22:08:25,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 22:08:25,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 22:08:25,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 22:08:25,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 22:08:25,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 22:08:25,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 22:08:25,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 22:08:25,241 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 22:08:25,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 22:08:25,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 22:08:25,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 22:08:25,243 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 22:08:25,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 22:08:25,243 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 22:08:25,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 22:08:25,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 22:08:25,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 22:08:25,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 22:08:25,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 22:08:25,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 22:08:25,245 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 22:08:25,245 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 22:08:25,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 22:08:25,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 22:08:25,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 22:08:25,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 22:08:25,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 22:08:25,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 22:08:25,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:08:25,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 22:08:25,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 22:08:25,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 22:08:25,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 22:08:25,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 22:08:25,247 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 22:08:25,248 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 22:08:25,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 22:08:25,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 22:08:25,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 22:08:25,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 22:08:25,646 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 22:08:25,647 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 22:08:25,648 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label00.c [2020-10-14 22:08:25,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b9dc2792/5028cba4f3b249f7b7506de78550bf46/FLAG19a096733 [2020-10-14 22:08:26,329 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 22:08:26,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label00.c [2020-10-14 22:08:26,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b9dc2792/5028cba4f3b249f7b7506de78550bf46/FLAG19a096733 [2020-10-14 22:08:26,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b9dc2792/5028cba4f3b249f7b7506de78550bf46 [2020-10-14 22:08:26,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 22:08:26,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 22:08:26,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 22:08:26,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 22:08:26,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 22:08:26,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:08:26" (1/1) ... [2020-10-14 22:08:26,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e979d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:26, skipping insertion in model container [2020-10-14 22:08:26,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:08:26" (1/1) ... [2020-10-14 22:08:26,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 22:08:26,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 22:08:27,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:08:27,741 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 22:08:28,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 22:08:28,046 INFO L208 MainTranslator]: Completed translation [2020-10-14 22:08:28,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:28 WrapperNode [2020-10-14 22:08:28,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 22:08:28,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 22:08:28,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 22:08:28,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 22:08:28,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:28" (1/1) ... [2020-10-14 22:08:28,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:28" (1/1) ... [2020-10-14 22:08:28,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:28" (1/1) ... [2020-10-14 22:08:28,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:28" (1/1) ... [2020-10-14 22:08:28,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:28" (1/1) ... [2020-10-14 22:08:28,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:28" (1/1) ... [2020-10-14 22:08:28,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:28" (1/1) ... [2020-10-14 22:08:28,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 22:08:28,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 22:08:28,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 22:08:28,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 22:08:28,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 22:08:28,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 22:08:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 22:08:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 22:08:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 22:08:28,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 22:08:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 22:08:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 22:08:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 22:08:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 22:08:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 22:08:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 22:08:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 22:08:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 22:08:33,474 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 22:08:33,477 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 22:08:33,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:08:33 BoogieIcfgContainer [2020-10-14 22:08:33,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 22:08:33,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 22:08:33,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 22:08:33,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 22:08:33,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:08:26" (1/3) ... [2020-10-14 22:08:33,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b49a146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:08:33, skipping insertion in model container [2020-10-14 22:08:33,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:08:28" (2/3) ... [2020-10-14 22:08:33,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b49a146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:08:33, skipping insertion in model container [2020-10-14 22:08:33,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:08:33" (3/3) ... [2020-10-14 22:08:33,513 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem16_label00.c [2020-10-14 22:08:33,529 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 22:08:33,549 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 22:08:33,572 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 22:08:33,616 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 22:08:33,616 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 22:08:33,617 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 22:08:33,617 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 22:08:33,617 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 22:08:33,617 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 22:08:33,617 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 22:08:33,617 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 22:08:33,664 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states. [2020-10-14 22:08:33,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 22:08:33,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:33,675 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:08:33,676 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:33,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:33,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1587899678, now seen corresponding path program 1 times [2020-10-14 22:08:33,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:33,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586539193] [2020-10-14 22:08:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:33,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:34,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:34,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 22:08:34,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:34,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-10-14 22:08:34,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:34,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:08:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:08:34,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 22:08:34,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 22:08:34,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:34,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:34,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:34,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:34,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:34,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 22:08:34,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:34,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:34,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:34,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:34,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:08:34,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:34,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:08:34,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586539193] [2020-10-14 22:08:34,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:08:34,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 22:08:34,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273369619] [2020-10-14 22:08:34,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 22:08:34,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:34,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 22:08:34,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 22:08:34,543 INFO L87 Difference]: Start difference. First operand 409 states. Second operand 4 states. [2020-10-14 22:08:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:39,402 INFO L93 Difference]: Finished difference Result 1169 states and 2165 transitions. [2020-10-14 22:08:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:08:39,405 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-14 22:08:39,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:39,435 INFO L225 Difference]: With dead ends: 1169 [2020-10-14 22:08:39,435 INFO L226 Difference]: Without dead ends: 696 [2020-10-14 22:08:39,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:08:39,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-10-14 22:08:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2020-10-14 22:08:39,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-14 22:08:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1077 transitions. [2020-10-14 22:08:39,582 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1077 transitions. Word has length 27 [2020-10-14 22:08:39,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:39,585 INFO L479 AbstractCegarLoop]: Abstraction has 689 states and 1077 transitions. [2020-10-14 22:08:39,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 22:08:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1077 transitions. [2020-10-14 22:08:39,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 22:08:39,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:39,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:08:39,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 22:08:39,598 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:39,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:39,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1329246203, now seen corresponding path program 1 times [2020-10-14 22:08:39,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:39,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996870542] [2020-10-14 22:08:39,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:39,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:39,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:39,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:40,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:40,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:08:40,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:08:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 920 [2020-10-14 22:08:40,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:40,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:08:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:08:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 22:08:40,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:08:40,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:40,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:40,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:40,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 22:08:40,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:40,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:40,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:08:40,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:40,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:40,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:08:40,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:40,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 22:08:40,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:40,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:40,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:08:40,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 22:08:40,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:41,013 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:08:41,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996870542] [2020-10-14 22:08:41,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:08:41,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:08:41,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325852003] [2020-10-14 22:08:41,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:08:41,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:41,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:08:41,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:08:41,018 INFO L87 Difference]: Start difference. First operand 689 states and 1077 transitions. Second operand 7 states. [2020-10-14 22:08:46,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:46,010 INFO L93 Difference]: Finished difference Result 1739 states and 2662 transitions. [2020-10-14 22:08:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:08:46,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-10-14 22:08:46,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:46,020 INFO L225 Difference]: With dead ends: 1739 [2020-10-14 22:08:46,020 INFO L226 Difference]: Without dead ends: 1056 [2020-10-14 22:08:46,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:08:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2020-10-14 22:08:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 1041. [2020-10-14 22:08:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2020-10-14 22:08:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1494 transitions. [2020-10-14 22:08:46,092 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1494 transitions. Word has length 102 [2020-10-14 22:08:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:46,093 INFO L479 AbstractCegarLoop]: Abstraction has 1041 states and 1494 transitions. [2020-10-14 22:08:46,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:08:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1494 transitions. [2020-10-14 22:08:46,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 22:08:46,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:46,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:08:46,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 22:08:46,103 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:46,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:46,103 INFO L82 PathProgramCache]: Analyzing trace with hash -960222930, now seen corresponding path program 1 times [2020-10-14 22:08:46,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:46,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1567814607] [2020-10-14 22:08:46,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:46,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:46,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:46,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 22:08:46,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:08:46,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-10-14 22:08:46,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:46,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:46,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:08:46,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:08:46,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 22:08:46,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:46,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:46,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:46,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:46,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:46,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:46,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:08:46,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:46,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:46,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:46,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:46,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:08:46,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:47,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:47,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:47,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:47,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 22:08:47,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:47,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 22:08:47,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:47,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:08:47,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 22:08:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:08:47,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1567814607] [2020-10-14 22:08:47,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:08:47,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 22:08:47,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978348201] [2020-10-14 22:08:47,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:08:47,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:47,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:08:47,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:08:47,233 INFO L87 Difference]: Start difference. First operand 1041 states and 1494 transitions. Second operand 8 states. [2020-10-14 22:08:53,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:53,800 INFO L93 Difference]: Finished difference Result 4201 states and 6219 transitions. [2020-10-14 22:08:53,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:08:53,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 103 [2020-10-14 22:08:53,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:53,825 INFO L225 Difference]: With dead ends: 4201 [2020-10-14 22:08:53,825 INFO L226 Difference]: Without dead ends: 3166 [2020-10-14 22:08:53,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-14 22:08:53,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2020-10-14 22:08:53,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 3141. [2020-10-14 22:08:53,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3141 states. [2020-10-14 22:08:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3141 states to 3141 states and 4236 transitions. [2020-10-14 22:08:53,947 INFO L78 Accepts]: Start accepts. Automaton has 3141 states and 4236 transitions. Word has length 103 [2020-10-14 22:08:53,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:53,948 INFO L479 AbstractCegarLoop]: Abstraction has 3141 states and 4236 transitions. [2020-10-14 22:08:53,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:08:53,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3141 states and 4236 transitions. [2020-10-14 22:08:53,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 22:08:53,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:53,951 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:08:53,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 22:08:53,951 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:53,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1297308901, now seen corresponding path program 1 times [2020-10-14 22:08:53,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:53,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960287960] [2020-10-14 22:08:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:53,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:54,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:54,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 22:08:54,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:54,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-14 22:08:54,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:54,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:08:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 22:08:54,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 22:08:54,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:54,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:08:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:54,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:54,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:54,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:08:54,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:54,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:08:54,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:54,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:54,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:08:54,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:08:54,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:54,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:08:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:54,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:08:54,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:08:54,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:08:54,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 22:08:54,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:08:54,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:08:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:08:54,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:08:54,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:08:54,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:08:54,403 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:08:54,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960287960] [2020-10-14 22:08:54,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:08:54,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:08:54,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722171286] [2020-10-14 22:08:54,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:08:54,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:08:54,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:08:54,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:08:54,406 INFO L87 Difference]: Start difference. First operand 3141 states and 4236 transitions. Second operand 5 states. [2020-10-14 22:08:59,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:08:59,249 INFO L93 Difference]: Finished difference Result 8021 states and 11210 transitions. [2020-10-14 22:08:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:08:59,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-14 22:08:59,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:08:59,277 INFO L225 Difference]: With dead ends: 8021 [2020-10-14 22:08:59,278 INFO L226 Difference]: Without dead ends: 4886 [2020-10-14 22:08:59,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:08:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4886 states. [2020-10-14 22:08:59,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4886 to 4880. [2020-10-14 22:08:59,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4880 states. [2020-10-14 22:08:59,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4880 states to 4880 states and 6501 transitions. [2020-10-14 22:08:59,445 INFO L78 Accepts]: Start accepts. Automaton has 4880 states and 6501 transitions. Word has length 118 [2020-10-14 22:08:59,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:08:59,446 INFO L479 AbstractCegarLoop]: Abstraction has 4880 states and 6501 transitions. [2020-10-14 22:08:59,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:08:59,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4880 states and 6501 transitions. [2020-10-14 22:08:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 22:08:59,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:08:59,450 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:08:59,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 22:08:59,451 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:08:59,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:08:59,451 INFO L82 PathProgramCache]: Analyzing trace with hash 47313282, now seen corresponding path program 1 times [2020-10-14 22:08:59,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:08:59,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115258754] [2020-10-14 22:08:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:08:59,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:08:59,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:08:59,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:00,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:00,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-14 22:09:00,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:09:00,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1345 [2020-10-14 22:09:00,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:00,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 22:09:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:09:00,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-14 22:09:00,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:00,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:00,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:00,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:00,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:00,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:00,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 22:09:00,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:00,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:00,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:09:00,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:00,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:01,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:01,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:01,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 22:09:01,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:01,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-14 22:09:01,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:01,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:01,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 22:09:01,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 22:09:01,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115258754] [2020-10-14 22:09:01,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 22:09:01,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 22:09:01,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773483781] [2020-10-14 22:09:01,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:09:01,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:01,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:09:01,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:09:01,406 INFO L87 Difference]: Start difference. First operand 4880 states and 6501 transitions. Second operand 7 states. [2020-10-14 22:09:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:06,407 INFO L93 Difference]: Finished difference Result 10522 states and 13968 transitions. [2020-10-14 22:09:06,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:09:06,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-10-14 22:09:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:06,445 INFO L225 Difference]: With dead ends: 10522 [2020-10-14 22:09:06,445 INFO L226 Difference]: Without dead ends: 5648 [2020-10-14 22:09:06,459 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:09:06,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5648 states. [2020-10-14 22:09:06,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5648 to 5618. [2020-10-14 22:09:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5618 states. [2020-10-14 22:09:06,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 7366 transitions. [2020-10-14 22:09:06,642 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 7366 transitions. Word has length 193 [2020-10-14 22:09:06,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:06,645 INFO L479 AbstractCegarLoop]: Abstraction has 5618 states and 7366 transitions. [2020-10-14 22:09:06,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:09:06,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 7366 transitions. [2020-10-14 22:09:06,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-14 22:09:06,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:06,655 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:09:06,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 22:09:06,655 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash -319650054, now seen corresponding path program 1 times [2020-10-14 22:09:06,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:06,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2050764919] [2020-10-14 22:09:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:07,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:10,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:10,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-14 22:09:10,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:09:10,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3612 [2020-10-14 22:09:10,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:10,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:09:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:09:10,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 314 [2020-10-14 22:09:10,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:10,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:10,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:10,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:10,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:10,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:10,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:09:10,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:10,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:10,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:09:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:10,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:10,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:10,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:10,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:09:10,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:09:10,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 22:09:10,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:10,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:10,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:09:10,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:10,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 22:09:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:10,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:10,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:10,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 22:09:10,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:10,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 22:09:10,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:10,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:10,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-10-14 22:09:10,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:09:11,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2050764919] [2020-10-14 22:09:11,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:11,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:09:11,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468396355] [2020-10-14 22:09:11,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:09:11,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:11,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:09:11,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:09:11,371 INFO L87 Difference]: Start difference. First operand 5618 states and 7366 transitions. Second operand 7 states. [2020-10-14 22:09:16,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:16,273 INFO L93 Difference]: Finished difference Result 12365 states and 17070 transitions. [2020-10-14 22:09:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:09:16,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 333 [2020-10-14 22:09:16,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:16,312 INFO L225 Difference]: With dead ends: 12365 [2020-10-14 22:09:16,312 INFO L226 Difference]: Without dead ends: 7429 [2020-10-14 22:09:16,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:09:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7429 states. [2020-10-14 22:09:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7429 to 7014. [2020-10-14 22:09:16,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7014 states. [2020-10-14 22:09:16,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7014 states to 7014 states and 9154 transitions. [2020-10-14 22:09:16,613 INFO L78 Accepts]: Start accepts. Automaton has 7014 states and 9154 transitions. Word has length 333 [2020-10-14 22:09:16,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:16,614 INFO L479 AbstractCegarLoop]: Abstraction has 7014 states and 9154 transitions. [2020-10-14 22:09:16,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:09:16,615 INFO L276 IsEmpty]: Start isEmpty. Operand 7014 states and 9154 transitions. [2020-10-14 22:09:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-14 22:09:16,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:16,623 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:09:16,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 22:09:16,623 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:16,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:16,624 INFO L82 PathProgramCache]: Analyzing trace with hash -31498342, now seen corresponding path program 1 times [2020-10-14 22:09:16,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:16,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200506304] [2020-10-14 22:09:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:16,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:16,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:18,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:18,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 401 [2020-10-14 22:09:18,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:09:18,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1723 [2020-10-14 22:09:18,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:18,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-14 22:09:18,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 22:09:18,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:18,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:18,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:18,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:18,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:18,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:18,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:09:18,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:18,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:18,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:18,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:18,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:18,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 22:09:18,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:18,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:18,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:18,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:18,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:09:18,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:18,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-14 22:09:18,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:18,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:18,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-14 22:09:18,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:19,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:09:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:19,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:19,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:19,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:09:19,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 22:09:19,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:19,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 22:09:19,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:19,479 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:09:19,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200506304] [2020-10-14 22:09:19,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:19,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:09:19,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842305578] [2020-10-14 22:09:19,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:09:19,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:19,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:09:19,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:09:19,482 INFO L87 Difference]: Start difference. First operand 7014 states and 9154 transitions. Second operand 7 states. [2020-10-14 22:09:25,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:25,386 INFO L93 Difference]: Finished difference Result 14752 states and 19657 transitions. [2020-10-14 22:09:25,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 22:09:25,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 389 [2020-10-14 22:09:25,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:25,420 INFO L225 Difference]: With dead ends: 14752 [2020-10-14 22:09:25,421 INFO L226 Difference]: Without dead ends: 8081 [2020-10-14 22:09:25,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:09:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8081 states. [2020-10-14 22:09:25,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8081 to 7728. [2020-10-14 22:09:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7728 states. [2020-10-14 22:09:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7728 states to 7728 states and 9957 transitions. [2020-10-14 22:09:25,597 INFO L78 Accepts]: Start accepts. Automaton has 7728 states and 9957 transitions. Word has length 389 [2020-10-14 22:09:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:25,598 INFO L479 AbstractCegarLoop]: Abstraction has 7728 states and 9957 transitions. [2020-10-14 22:09:25,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:09:25,598 INFO L276 IsEmpty]: Start isEmpty. Operand 7728 states and 9957 transitions. [2020-10-14 22:09:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-14 22:09:25,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:25,608 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:09:25,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 22:09:25,609 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:25,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:25,609 INFO L82 PathProgramCache]: Analyzing trace with hash 2092930931, now seen corresponding path program 1 times [2020-10-14 22:09:25,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:25,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237986442] [2020-10-14 22:09:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:25,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:25,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:25,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:30,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:30,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 452 [2020-10-14 22:09:30,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:09:30,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4414 [2020-10-14 22:09:30,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:30,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 22:09:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:09:30,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 421 [2020-10-14 22:09:30,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:30,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:30,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:30,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:30,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:30,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:30,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 22:09:30,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:30,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:30,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:09:30,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:30,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:30,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:30,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:30,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:30,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:09:30,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:09:30,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-14 22:09:30,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:30,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 22:09:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:30,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:09:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:30,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:30,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:30,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 22:09:30,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:30,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 22:09:30,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:30,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:30,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:30,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:30,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 22:09:30,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:09:31,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237986442] [2020-10-14 22:09:31,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:31,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:09:31,125 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203988080] [2020-10-14 22:09:31,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:09:31,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:31,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:09:31,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:09:31,126 INFO L87 Difference]: Start difference. First operand 7728 states and 9957 transitions. Second operand 7 states. [2020-10-14 22:09:35,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:35,009 INFO L93 Difference]: Finished difference Result 15145 states and 19646 transitions. [2020-10-14 22:09:35,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:09:35,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 440 [2020-10-14 22:09:35,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:35,034 INFO L225 Difference]: With dead ends: 15145 [2020-10-14 22:09:35,034 INFO L226 Difference]: Without dead ends: 7762 [2020-10-14 22:09:35,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 22:09:35,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7762 states. [2020-10-14 22:09:35,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 7734. [2020-10-14 22:09:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7734 states. [2020-10-14 22:09:35,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7734 states to 7734 states and 9959 transitions. [2020-10-14 22:09:35,349 INFO L78 Accepts]: Start accepts. Automaton has 7734 states and 9959 transitions. Word has length 440 [2020-10-14 22:09:35,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:35,350 INFO L479 AbstractCegarLoop]: Abstraction has 7734 states and 9959 transitions. [2020-10-14 22:09:35,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:09:35,350 INFO L276 IsEmpty]: Start isEmpty. Operand 7734 states and 9959 transitions. [2020-10-14 22:09:35,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-14 22:09:35,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:35,361 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:09:35,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 22:09:35,362 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:35,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:35,362 INFO L82 PathProgramCache]: Analyzing trace with hash -44220545, now seen corresponding path program 1 times [2020-10-14 22:09:35,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:35,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660969268] [2020-10-14 22:09:35,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:35,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:35,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:36,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:37,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:37,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-14 22:09:37,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:09:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2228 [2020-10-14 22:09:37,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:37,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-14 22:09:37,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-14 22:09:37,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:37,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:37,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:37,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:37,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:37,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:37,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:09:37,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:37,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:37,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:37,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:37,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:37,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:37,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:37,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 22:09:37,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 22:09:37,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:37,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 22:09:37,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:37,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 22:09:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:38,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:38,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:38,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:09:38,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-10-14 22:09:38,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:38,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:38,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:38,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:09:38,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:38,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-14 22:09:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:38,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:38,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:38,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 22:09:38,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:38,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 22:09:38,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:38,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:38,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:38,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 22:09:38,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:38,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 152 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 22:09:38,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660969268] [2020-10-14 22:09:38,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:38,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:09:38,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142684469] [2020-10-14 22:09:38,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:09:38,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:38,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:09:38,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:09:38,780 INFO L87 Difference]: Start difference. First operand 7734 states and 9959 transitions. Second operand 7 states. [2020-10-14 22:09:43,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:43,791 INFO L93 Difference]: Finished difference Result 16187 states and 20921 transitions. [2020-10-14 22:09:43,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:09:43,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 442 [2020-10-14 22:09:43,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:43,815 INFO L225 Difference]: With dead ends: 16187 [2020-10-14 22:09:43,815 INFO L226 Difference]: Without dead ends: 8374 [2020-10-14 22:09:43,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:09:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8374 states. [2020-10-14 22:09:43,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8374 to 8340. [2020-10-14 22:09:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8340 states. [2020-10-14 22:09:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8340 states to 8340 states and 9821 transitions. [2020-10-14 22:09:43,977 INFO L78 Accepts]: Start accepts. Automaton has 8340 states and 9821 transitions. Word has length 442 [2020-10-14 22:09:43,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:43,977 INFO L479 AbstractCegarLoop]: Abstraction has 8340 states and 9821 transitions. [2020-10-14 22:09:43,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:09:43,977 INFO L276 IsEmpty]: Start isEmpty. Operand 8340 states and 9821 transitions. [2020-10-14 22:09:43,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-10-14 22:09:43,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:43,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:09:43,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 22:09:43,988 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:43,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:43,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1071948078, now seen corresponding path program 1 times [2020-10-14 22:09:43,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:43,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706988856] [2020-10-14 22:09:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:44,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:44,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:46,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:46,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-14 22:09:46,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:09:46,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2060 [2020-10-14 22:09:46,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:46,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 22:09:46,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 22:09:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 455 [2020-10-14 22:09:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:46,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:46,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:46,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:46,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:46,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:46,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 22:09:46,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:46,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:46,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:46,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:46,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 22:09:46,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:46,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:46,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:46,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:46,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:09:46,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 22:09:46,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:46,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:46,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-14 22:09:46,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:46,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:09:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:46,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:46,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:46,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 22:09:46,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:46,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-14 22:09:46,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:46,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:09:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:46,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 22:09:46,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 0 proven. 219 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 22:09:47,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706988856] [2020-10-14 22:09:47,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:47,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:09:47,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050447820] [2020-10-14 22:09:47,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 22:09:47,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:47,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 22:09:47,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-14 22:09:47,260 INFO L87 Difference]: Start difference. First operand 8340 states and 9821 transitions. Second operand 9 states. [2020-10-14 22:09:54,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:09:54,892 INFO L93 Difference]: Finished difference Result 22871 states and 27350 transitions. [2020-10-14 22:09:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 22:09:54,893 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 449 [2020-10-14 22:09:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:09:54,937 INFO L225 Difference]: With dead ends: 22871 [2020-10-14 22:09:54,937 INFO L226 Difference]: Without dead ends: 14533 [2020-10-14 22:09:54,956 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:09:54,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14533 states. [2020-10-14 22:09:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14533 to 14172. [2020-10-14 22:09:55,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14172 states. [2020-10-14 22:09:55,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14172 states to 14172 states and 16982 transitions. [2020-10-14 22:09:55,185 INFO L78 Accepts]: Start accepts. Automaton has 14172 states and 16982 transitions. Word has length 449 [2020-10-14 22:09:55,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:09:55,186 INFO L479 AbstractCegarLoop]: Abstraction has 14172 states and 16982 transitions. [2020-10-14 22:09:55,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 22:09:55,186 INFO L276 IsEmpty]: Start isEmpty. Operand 14172 states and 16982 transitions. [2020-10-14 22:09:55,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-10-14 22:09:55,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:09:55,194 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:09:55,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 22:09:55,194 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:09:55,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:09:55,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1549571551, now seen corresponding path program 1 times [2020-10-14 22:09:55,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:09:55,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371225415] [2020-10-14 22:09:55,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:09:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:55,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:55,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:56,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:56,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-14 22:09:56,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:09:56,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1093 [2020-10-14 22:09:56,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:56,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:56,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:56,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-14 22:09:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 22:09:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:56,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:09:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:56,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:56,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:56,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:09:56,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:56,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:09:56,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:56,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:56,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:56,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:56,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:56,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:56,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:09:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:56,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:56,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:56,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:09:56,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:56,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 22:09:56,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:56,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:56,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:09:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:56,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:09:56,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:09:56,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:09:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:56,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:56,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:56,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:09:56,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:56,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 22:09:56,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:56,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:09:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:09:56,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:09:56,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:57,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 22:09:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:09:57,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:09:57,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:09:57,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-14 22:09:57,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:09:57,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 22:09:57,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:09:57,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:09:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:09:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:09:57,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:09:57,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:09:57,407 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 247 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 22:09:57,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371225415] [2020-10-14 22:09:57,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:09:57,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:09:57,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732093463] [2020-10-14 22:09:57,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:09:57,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:09:57,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:09:57,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:09:57,411 INFO L87 Difference]: Start difference. First operand 14172 states and 16982 transitions. Second operand 8 states. [2020-10-14 22:10:03,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:03,688 INFO L93 Difference]: Finished difference Result 33438 states and 41130 transitions. [2020-10-14 22:10:03,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:10:03,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 468 [2020-10-14 22:10:03,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:03,750 INFO L225 Difference]: With dead ends: 33438 [2020-10-14 22:10:03,750 INFO L226 Difference]: Without dead ends: 19611 [2020-10-14 22:10:03,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:10:03,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19611 states. [2020-10-14 22:10:04,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19611 to 19601. [2020-10-14 22:10:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19601 states. [2020-10-14 22:10:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19601 states to 19601 states and 23774 transitions. [2020-10-14 22:10:04,136 INFO L78 Accepts]: Start accepts. Automaton has 19601 states and 23774 transitions. Word has length 468 [2020-10-14 22:10:04,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:04,137 INFO L479 AbstractCegarLoop]: Abstraction has 19601 states and 23774 transitions. [2020-10-14 22:10:04,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:10:04,138 INFO L276 IsEmpty]: Start isEmpty. Operand 19601 states and 23774 transitions. [2020-10-14 22:10:04,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-14 22:10:04,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:04,149 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:10:04,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 22:10:04,149 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:04,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:04,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1706302222, now seen corresponding path program 1 times [2020-10-14 22:10:04,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:04,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450656781] [2020-10-14 22:10:04,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:04,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:04,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:04,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 511 [2020-10-14 22:10:04,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:04,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 713 [2020-10-14 22:10:04,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:04,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:10:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 484 [2020-10-14 22:10:04,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 22:10:04,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:05,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:10:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:05,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:05,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:10:05,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:05,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:10:05,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:05,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:05,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:05,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:05,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:05,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:10:05,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:10:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:05,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:05,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:05,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:10:05,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:05,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:10:05,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:05,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:05,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:05,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:10:05,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:10:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:05,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:05,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:05,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:10:05,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:05,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 22:10:05,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:05,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:05,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:05,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:05,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 22:10:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:05,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:05,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:05,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 22:10:05,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:05,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 22:10:05,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:05,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:05,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-14 22:10:05,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:05,566 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2020-10-14 22:10:05,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450656781] [2020-10-14 22:10:05,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:10:05,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:10:05,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442097365] [2020-10-14 22:10:05,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:10:05,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:10:05,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:10:05,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:10:05,569 INFO L87 Difference]: Start difference. First operand 19601 states and 23774 transitions. Second operand 5 states. [2020-10-14 22:10:10,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:10,087 INFO L93 Difference]: Finished difference Result 41959 states and 51724 transitions. [2020-10-14 22:10:10,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:10:10,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 497 [2020-10-14 22:10:10,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:10,158 INFO L225 Difference]: With dead ends: 41959 [2020-10-14 22:10:10,158 INFO L226 Difference]: Without dead ends: 22303 [2020-10-14 22:10:10,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:10:10,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22303 states. [2020-10-14 22:10:10,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22303 to 21966. [2020-10-14 22:10:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21966 states. [2020-10-14 22:10:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21966 states to 21966 states and 26036 transitions. [2020-10-14 22:10:10,723 INFO L78 Accepts]: Start accepts. Automaton has 21966 states and 26036 transitions. Word has length 497 [2020-10-14 22:10:10,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:10,724 INFO L479 AbstractCegarLoop]: Abstraction has 21966 states and 26036 transitions. [2020-10-14 22:10:10,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:10:10,724 INFO L276 IsEmpty]: Start isEmpty. Operand 21966 states and 26036 transitions. [2020-10-14 22:10:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2020-10-14 22:10:10,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:10,733 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:10:10,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 22:10:10,733 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:10,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:10,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1064997393, now seen corresponding path program 1 times [2020-10-14 22:10:10,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:10,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150589547] [2020-10-14 22:10:10,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:11,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:12,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:12,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 554 [2020-10-14 22:10:12,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:10:12,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1297 [2020-10-14 22:10:12,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:12,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:12,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:10:12,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-14 22:10:12,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 22:10:12,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:12,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:10:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:12,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:12,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:12,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:10:12,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:12,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:10:12,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:12,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:12,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:12,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:12,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:12,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:12,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:10:12,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:12,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:12,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:12,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:10:12,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:12,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:10:12,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:12,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:12,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:12,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:12,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:12,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:10:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:12,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:12,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:12,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:10:12,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:12,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 22:10:12,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:12,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:12,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:10:12,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:12,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 22:10:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:12,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:12,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-14 22:10:12,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:12,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 22:10:12,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:12,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:10:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:10:12,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 22:10:12,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 325 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 22:10:12,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150589547] [2020-10-14 22:10:12,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:10:12,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:10:12,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044606595] [2020-10-14 22:10:12,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:10:12,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:10:12,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:10:12,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:10:12,957 INFO L87 Difference]: Start difference. First operand 21966 states and 26036 transitions. Second operand 7 states. [2020-10-14 22:10:18,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:18,349 INFO L93 Difference]: Finished difference Result 47000 states and 55939 transitions. [2020-10-14 22:10:18,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:10:18,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 540 [2020-10-14 22:10:18,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:18,417 INFO L225 Difference]: With dead ends: 47000 [2020-10-14 22:10:18,417 INFO L226 Difference]: Without dead ends: 25379 [2020-10-14 22:10:18,450 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:10:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25379 states. [2020-10-14 22:10:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25379 to 24024. [2020-10-14 22:10:18,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24024 states. [2020-10-14 22:10:18,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24024 states to 24024 states and 28341 transitions. [2020-10-14 22:10:18,786 INFO L78 Accepts]: Start accepts. Automaton has 24024 states and 28341 transitions. Word has length 540 [2020-10-14 22:10:18,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:18,787 INFO L479 AbstractCegarLoop]: Abstraction has 24024 states and 28341 transitions. [2020-10-14 22:10:18,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:10:18,787 INFO L276 IsEmpty]: Start isEmpty. Operand 24024 states and 28341 transitions. [2020-10-14 22:10:18,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2020-10-14 22:10:18,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:18,793 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:10:18,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 22:10:18,794 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:18,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:18,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1810813863, now seen corresponding path program 1 times [2020-10-14 22:10:18,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:18,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053539952] [2020-10-14 22:10:18,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:18,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:19,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:19,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 558 [2020-10-14 22:10:19,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:19,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1075 [2020-10-14 22:10:19,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:19,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:10:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-14 22:10:19,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 300 [2020-10-14 22:10:19,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:20,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:10:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:20,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:20,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:20,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:10:20,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:20,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:10:20,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:20,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:20,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:20,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:20,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:20,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:20,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:10:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:20,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:20,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:20,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:10:20,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 22:10:20,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:20,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:20,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-14 22:10:20,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:20,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:10:20,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:20,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:20,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:20,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 22:10:20,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:20,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-14 22:10:20,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:20,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:10:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:10:20,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-14 22:10:20,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:20,965 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 266 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 22:10:20,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053539952] [2020-10-14 22:10:20,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:10:20,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:10:20,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802828379] [2020-10-14 22:10:20,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:10:20,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:10:20,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:10:20,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:10:20,967 INFO L87 Difference]: Start difference. First operand 24024 states and 28341 transitions. Second operand 8 states. [2020-10-14 22:10:27,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:27,712 INFO L93 Difference]: Finished difference Result 53165 states and 63432 transitions. [2020-10-14 22:10:27,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 22:10:27,713 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 546 [2020-10-14 22:10:27,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:27,773 INFO L225 Difference]: With dead ends: 53165 [2020-10-14 22:10:27,774 INFO L226 Difference]: Without dead ends: 29145 [2020-10-14 22:10:27,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:10:27,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29145 states. [2020-10-14 22:10:28,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29145 to 28792. [2020-10-14 22:10:28,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28792 states. [2020-10-14 22:10:28,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28792 states to 28792 states and 34461 transitions. [2020-10-14 22:10:28,264 INFO L78 Accepts]: Start accepts. Automaton has 28792 states and 34461 transitions. Word has length 546 [2020-10-14 22:10:28,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:28,264 INFO L479 AbstractCegarLoop]: Abstraction has 28792 states and 34461 transitions. [2020-10-14 22:10:28,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:10:28,265 INFO L276 IsEmpty]: Start isEmpty. Operand 28792 states and 34461 transitions. [2020-10-14 22:10:28,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 558 [2020-10-14 22:10:28,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:28,274 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:10:28,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 22:10:28,274 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:28,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:28,274 INFO L82 PathProgramCache]: Analyzing trace with hash -616934330, now seen corresponding path program 1 times [2020-10-14 22:10:28,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:28,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619673528] [2020-10-14 22:10:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:28,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:28,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:28,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 571 [2020-10-14 22:10:28,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-14 22:10:28,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:28,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:10:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-14 22:10:28,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-14 22:10:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:28,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:10:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:28,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:28,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:28,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:10:28,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:28,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:10:28,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:28,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:28,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:28,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:28,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:28,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:10:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:28,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:28,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:28,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:10:28,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:10:28,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:28,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:28,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:10:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:29,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:29,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:29,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 22:10:29,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:29,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 22:10:29,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:29,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:29,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 22:10:29,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:29,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-14 22:10:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:29,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:29,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:29,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 22:10:29,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-14 22:10:29,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:29,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:10:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:10:29,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-14 22:10:29,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 342 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-14 22:10:29,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619673528] [2020-10-14 22:10:29,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:10:29,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:10:29,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064272916] [2020-10-14 22:10:29,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:10:29,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:10:29,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:10:29,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:10:29,592 INFO L87 Difference]: Start difference. First operand 28792 states and 34461 transitions. Second operand 7 states. [2020-10-14 22:10:34,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:34,348 INFO L93 Difference]: Finished difference Result 56592 states and 67876 transitions. [2020-10-14 22:10:34,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:10:34,349 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 557 [2020-10-14 22:10:34,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:34,414 INFO L225 Difference]: With dead ends: 56592 [2020-10-14 22:10:34,414 INFO L226 Difference]: Without dead ends: 28145 [2020-10-14 22:10:34,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 22:10:34,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28145 states. [2020-10-14 22:10:34,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28145 to 25429. [2020-10-14 22:10:34,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25429 states. [2020-10-14 22:10:34,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25429 states to 25429 states and 28854 transitions. [2020-10-14 22:10:34,813 INFO L78 Accepts]: Start accepts. Automaton has 25429 states and 28854 transitions. Word has length 557 [2020-10-14 22:10:34,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:34,814 INFO L479 AbstractCegarLoop]: Abstraction has 25429 states and 28854 transitions. [2020-10-14 22:10:34,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:10:34,814 INFO L276 IsEmpty]: Start isEmpty. Operand 25429 states and 28854 transitions. [2020-10-14 22:10:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2020-10-14 22:10:34,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:34,822 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:10:34,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 22:10:34,822 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:34,823 INFO L82 PathProgramCache]: Analyzing trace with hash 738905978, now seen corresponding path program 1 times [2020-10-14 22:10:34,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:34,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691002836] [2020-10-14 22:10:34,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:34,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:35,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:35,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 603 [2020-10-14 22:10:35,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:35,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-14 22:10:35,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:35,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:10:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-14 22:10:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 22:10:35,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:35,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:10:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:35,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:35,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:35,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:10:35,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:35,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:10:35,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:35,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:35,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:35,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:35,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:10:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:35,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:35,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:35,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:10:35,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:35,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 22:10:35,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:35,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:35,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:10:35,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:10:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:35,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:36,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:36,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-14 22:10:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-14 22:10:36,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:36,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 309 [2020-10-14 22:10:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:36,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-14 22:10:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:36,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:36,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 22:10:36,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:36,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 22:10:36,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:36,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:36,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:36,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:36,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 22:10:36,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:36,478 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2020-10-14 22:10:36,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691002836] [2020-10-14 22:10:36,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:10:36,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 22:10:36,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253078097] [2020-10-14 22:10:36,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 22:10:36,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:10:36,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 22:10:36,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 22:10:36,480 INFO L87 Difference]: Start difference. First operand 25429 states and 28854 transitions. Second operand 5 states. [2020-10-14 22:10:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:40,755 INFO L93 Difference]: Finished difference Result 51894 states and 59026 transitions. [2020-10-14 22:10:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 22:10:40,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 589 [2020-10-14 22:10:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:40,801 INFO L225 Difference]: With dead ends: 51894 [2020-10-14 22:10:40,801 INFO L226 Difference]: Without dead ends: 26412 [2020-10-14 22:10:40,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 22:10:40,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26412 states. [2020-10-14 22:10:41,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26412 to 26412. [2020-10-14 22:10:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26412 states. [2020-10-14 22:10:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26412 states to 26412 states and 29133 transitions. [2020-10-14 22:10:41,181 INFO L78 Accepts]: Start accepts. Automaton has 26412 states and 29133 transitions. Word has length 589 [2020-10-14 22:10:41,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:41,182 INFO L479 AbstractCegarLoop]: Abstraction has 26412 states and 29133 transitions. [2020-10-14 22:10:41,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 22:10:41,182 INFO L276 IsEmpty]: Start isEmpty. Operand 26412 states and 29133 transitions. [2020-10-14 22:10:41,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 696 [2020-10-14 22:10:41,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:41,193 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:10:41,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 22:10:41,193 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:41,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:41,194 INFO L82 PathProgramCache]: Analyzing trace with hash -122471310, now seen corresponding path program 1 times [2020-10-14 22:10:41,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:41,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924569289] [2020-10-14 22:10:41,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:41,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:42,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:42,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 709 [2020-10-14 22:10:42,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:42,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 883 [2020-10-14 22:10:42,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:42,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:10:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-14 22:10:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 22:10:42,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:42,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:10:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:42,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:42,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:42,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:10:42,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:42,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:10:42,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:42,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:42,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:42,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:42,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:10:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:42,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:42,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:42,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:10:42,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:42,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 22:10:42,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:42,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:42,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:42,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:10:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:42,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:42,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:42,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:10:42,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:42,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 22:10:42,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:42,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:42,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 22:10:42,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:42,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:10:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:42,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:42,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 22:10:42,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:42,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 22:10:42,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:42,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:10:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:10:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:10:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 463 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-14 22:10:43,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924569289] [2020-10-14 22:10:43,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:10:43,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:10:43,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108206027] [2020-10-14 22:10:43,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:10:43,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:10:43,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:10:43,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:10:43,476 INFO L87 Difference]: Start difference. First operand 26412 states and 29133 transitions. Second operand 7 states. [2020-10-14 22:10:47,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:47,978 INFO L93 Difference]: Finished difference Result 52824 states and 58299 transitions. [2020-10-14 22:10:47,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:10:47,979 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 695 [2020-10-14 22:10:47,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:48,043 INFO L225 Difference]: With dead ends: 52824 [2020-10-14 22:10:48,044 INFO L226 Difference]: Without dead ends: 26757 [2020-10-14 22:10:48,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:10:48,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26757 states. [2020-10-14 22:10:48,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26757 to 26749. [2020-10-14 22:10:48,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26749 states. [2020-10-14 22:10:48,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26749 states to 26749 states and 29387 transitions. [2020-10-14 22:10:48,451 INFO L78 Accepts]: Start accepts. Automaton has 26749 states and 29387 transitions. Word has length 695 [2020-10-14 22:10:48,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:48,452 INFO L479 AbstractCegarLoop]: Abstraction has 26749 states and 29387 transitions. [2020-10-14 22:10:48,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:10:48,452 INFO L276 IsEmpty]: Start isEmpty. Operand 26749 states and 29387 transitions. [2020-10-14 22:10:48,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2020-10-14 22:10:48,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:48,462 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:10:48,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 22:10:48,463 INFO L427 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:48,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:48,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2129582819, now seen corresponding path program 1 times [2020-10-14 22:10:48,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:48,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691608984] [2020-10-14 22:10:48,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:48,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:49,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:49,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 722 [2020-10-14 22:10:49,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:49,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1286 [2020-10-14 22:10:49,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:49,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:49,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:10:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-14 22:10:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 305 [2020-10-14 22:10:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:10:49,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:10:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:49,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:50,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:50,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:10:50,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:10:50,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:50,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:50,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:10:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:50,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:50,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:50,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:10:50,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:50,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 22:10:50,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:50,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:10:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:50,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:10:50,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:50,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:10:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:50,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:50,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:50,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:10:50,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:50,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 22:10:50,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:50,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:50,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:10:50,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:10:50,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 22:10:50,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:50,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:10:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:50,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:50,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:50,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-14 22:10:50,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:50,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 22:10:50,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:50,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:10:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:10:50,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-14 22:10:50,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:10:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 444 proven. 21 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-14 22:10:51,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691608984] [2020-10-14 22:10:51,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:10:51,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:10:51,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406846776] [2020-10-14 22:10:51,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:10:51,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:10:51,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:10:51,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:10:51,042 INFO L87 Difference]: Start difference. First operand 26749 states and 29387 transitions. Second operand 8 states. [2020-10-14 22:10:58,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:10:58,109 INFO L93 Difference]: Finished difference Result 59640 states and 65647 transitions. [2020-10-14 22:10:58,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:10:58,110 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 708 [2020-10-14 22:10:58,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:10:58,161 INFO L225 Difference]: With dead ends: 59640 [2020-10-14 22:10:58,161 INFO L226 Difference]: Without dead ends: 32838 [2020-10-14 22:10:58,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:10:58,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32838 states. [2020-10-14 22:10:58,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32838 to 29103. [2020-10-14 22:10:58,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29103 states. [2020-10-14 22:10:58,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29103 states to 29103 states and 31898 transitions. [2020-10-14 22:10:58,493 INFO L78 Accepts]: Start accepts. Automaton has 29103 states and 31898 transitions. Word has length 708 [2020-10-14 22:10:58,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:10:58,494 INFO L479 AbstractCegarLoop]: Abstraction has 29103 states and 31898 transitions. [2020-10-14 22:10:58,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:10:58,494 INFO L276 IsEmpty]: Start isEmpty. Operand 29103 states and 31898 transitions. [2020-10-14 22:10:58,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2020-10-14 22:10:58,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:10:58,502 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:10:58,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 22:10:58,503 INFO L427 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:10:58,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:10:58,503 INFO L82 PathProgramCache]: Analyzing trace with hash -1116177482, now seen corresponding path program 1 times [2020-10-14 22:10:58,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:10:58,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940375828] [2020-10-14 22:10:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:10:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:10:58,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:10:59,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:10:59,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 777 [2020-10-14 22:10:59,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:10:59,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1320 [2020-10-14 22:10:59,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:10:59,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:10:59,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:10:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-14 22:10:59,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-14 22:10:59,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:00,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:11:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:00,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:00,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:11:00,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 22:11:00,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:00,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:00,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:00,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:11:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:00,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:00,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:00,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:11:00,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:00,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 22:11:00,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:00,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:00,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:00,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:00,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:11:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:00,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:00,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:00,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:11:00,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:00,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 22:11:00,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:00,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:00,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:00,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:00,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:11:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:00,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:00,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:00,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:11:00,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:00,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-14 22:11:00,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:00,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:00,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-14 22:11:00,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:00,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 22:11:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:00,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:00,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:00,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 22:11:00,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:00,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-14 22:11:00,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:00,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:11:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:11:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 22:11:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:01,380 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 390 proven. 26 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-14 22:11:01,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940375828] [2020-10-14 22:11:01,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:11:01,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:11:01,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977259535] [2020-10-14 22:11:01,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:11:01,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:11:01,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:11:01,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:11:01,382 INFO L87 Difference]: Start difference. First operand 29103 states and 31898 transitions. Second operand 8 states. [2020-10-14 22:11:10,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:11:10,768 INFO L93 Difference]: Finished difference Result 59590 states and 65442 transitions. [2020-10-14 22:11:10,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 22:11:10,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 761 [2020-10-14 22:11:10,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:11:10,830 INFO L225 Difference]: With dead ends: 59590 [2020-10-14 22:11:10,830 INFO L226 Difference]: Without dead ends: 30491 [2020-10-14 22:11:10,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-14 22:11:10,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30491 states. [2020-10-14 22:11:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30491 to 29458. [2020-10-14 22:11:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29458 states. [2020-10-14 22:11:11,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29458 states to 29458 states and 32294 transitions. [2020-10-14 22:11:11,239 INFO L78 Accepts]: Start accepts. Automaton has 29458 states and 32294 transitions. Word has length 761 [2020-10-14 22:11:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:11:11,240 INFO L479 AbstractCegarLoop]: Abstraction has 29458 states and 32294 transitions. [2020-10-14 22:11:11,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:11:11,240 INFO L276 IsEmpty]: Start isEmpty. Operand 29458 states and 32294 transitions. [2020-10-14 22:11:11,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2020-10-14 22:11:11,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:11:11,252 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:11:11,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 22:11:11,252 INFO L427 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:11:11,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:11:11,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1514388434, now seen corresponding path program 1 times [2020-10-14 22:11:11,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:11:11,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91161461] [2020-10-14 22:11:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:11:11,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:11,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:12,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:12,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 869 [2020-10-14 22:11:12,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:12,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-10-14 22:11:12,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:12,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 22:11:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-14 22:11:12,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-14 22:11:12,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:12,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:11:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:12,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:12,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:12,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:11:12,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:12,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:11:12,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:12,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:12,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:12,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:12,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:11:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:12,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:12,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:12,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:11:12,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:12,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 22:11:12,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:12,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:12,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:12,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:12,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:12,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:12,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:11:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:12,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:12,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:12,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 22:11:12,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:12,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 22:11:12,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:12,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:12,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:12,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:12,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-14 22:11:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:12,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:12,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 22:11:12,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:12,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 22:11:12,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:12,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:12,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:12,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:12,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 22:11:12,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:12,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-14 22:11:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:13,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:13,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:13,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 22:11:13,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:13,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 22:11:13,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:13,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:13,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 22:11:13,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:11:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 22:11:13,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:14,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 622 proven. 22 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2020-10-14 22:11:14,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91161461] [2020-10-14 22:11:14,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:11:14,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 22:11:14,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274750473] [2020-10-14 22:11:14,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 22:11:14,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:11:14,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 22:11:14,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 22:11:14,371 INFO L87 Difference]: Start difference. First operand 29458 states and 32294 transitions. Second operand 8 states. [2020-10-14 22:11:21,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:11:21,626 INFO L93 Difference]: Finished difference Result 65419 states and 71981 transitions. [2020-10-14 22:11:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:11:21,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 853 [2020-10-14 22:11:21,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:11:21,679 INFO L225 Difference]: With dead ends: 65419 [2020-10-14 22:11:21,679 INFO L226 Difference]: Without dead ends: 35951 [2020-10-14 22:11:21,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:11:21,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35951 states. [2020-10-14 22:11:22,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35951 to 35602. [2020-10-14 22:11:22,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35602 states. [2020-10-14 22:11:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35602 states to 35602 states and 39242 transitions. [2020-10-14 22:11:22,045 INFO L78 Accepts]: Start accepts. Automaton has 35602 states and 39242 transitions. Word has length 853 [2020-10-14 22:11:22,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:11:22,046 INFO L479 AbstractCegarLoop]: Abstraction has 35602 states and 39242 transitions. [2020-10-14 22:11:22,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 22:11:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 35602 states and 39242 transitions. [2020-10-14 22:11:22,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2020-10-14 22:11:22,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:11:22,061 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:11:22,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 22:11:22,061 INFO L427 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:11:22,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:11:22,061 INFO L82 PathProgramCache]: Analyzing trace with hash 416870675, now seen corresponding path program 1 times [2020-10-14 22:11:22,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:11:22,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544737600] [2020-10-14 22:11:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:11:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:22,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:23,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:23,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 930 [2020-10-14 22:11:23,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:23,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1182 [2020-10-14 22:11:23,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:23,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:11:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-14 22:11:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-14 22:11:23,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:23,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:11:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:23,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:23,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:11:23,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:23,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:11:23,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:23,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:23,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:23,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:23,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:23,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:23,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:11:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:23,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:23,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:23,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-14 22:11:23,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:23,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 22:11:23,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:23,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:23,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:23,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:23,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:23,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-10-14 22:11:23,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-14 22:11:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:23,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:23,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:23,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-14 22:11:23,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 22:11:23,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:23,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:23,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:23,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-14 22:11:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:23,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:24,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:24,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 22:11:24,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:24,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 22:11:24,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:24,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:24,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-14 22:11:24,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:24,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 631 [2020-10-14 22:11:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:24,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:24,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:24,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 22:11:24,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:24,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-14 22:11:24,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:24,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:11:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:11:24,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:11:24,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:25,277 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 704 proven. 2 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked. [2020-10-14 22:11:25,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544737600] [2020-10-14 22:11:25,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:11:25,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:11:25,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468626915] [2020-10-14 22:11:25,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:11:25,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:11:25,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:11:25,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:11:25,279 INFO L87 Difference]: Start difference. First operand 35602 states and 39242 transitions. Second operand 7 states. [2020-10-14 22:11:30,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:11:30,284 INFO L93 Difference]: Finished difference Result 72560 states and 79993 transitions. [2020-10-14 22:11:30,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 22:11:30,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 914 [2020-10-14 22:11:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:11:30,341 INFO L225 Difference]: With dead ends: 72560 [2020-10-14 22:11:30,342 INFO L226 Difference]: Without dead ends: 37303 [2020-10-14 22:11:30,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:11:30,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37303 states. [2020-10-14 22:11:30,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37303 to 37289. [2020-10-14 22:11:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37289 states. [2020-10-14 22:11:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37289 states to 37289 states and 40998 transitions. [2020-10-14 22:11:30,755 INFO L78 Accepts]: Start accepts. Automaton has 37289 states and 40998 transitions. Word has length 914 [2020-10-14 22:11:30,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:11:30,756 INFO L479 AbstractCegarLoop]: Abstraction has 37289 states and 40998 transitions. [2020-10-14 22:11:30,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:11:30,756 INFO L276 IsEmpty]: Start isEmpty. Operand 37289 states and 40998 transitions. [2020-10-14 22:11:30,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2020-10-14 22:11:30,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:11:30,772 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:11:30,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 22:11:30,773 INFO L427 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:11:30,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:11:30,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1724505494, now seen corresponding path program 1 times [2020-10-14 22:11:30,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:11:30,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62911438] [2020-10-14 22:11:30,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:11:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:30,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:31,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:31,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:33,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:35,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:35,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 967 [2020-10-14 22:11:35,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 22:11:35,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 22:11:35,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:35,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:11:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 676 [2020-10-14 22:11:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:11:35,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:36,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:11:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:36,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:36,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:36,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:11:36,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:11:36,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:36,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:36,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:36,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:36,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:11:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:36,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:36,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:36,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:11:36,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:36,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:11:36,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:36,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:36,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:36,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:36,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:36,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:36,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:11:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:36,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:36,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:11:36,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:36,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 22:11:36,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:36,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:36,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:36,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:36,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:11:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:36,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:36,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:36,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:11:36,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 22:11:36,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:36,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:36,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:36,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:36,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-14 22:11:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:36,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:36,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 22:11:36,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:36,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 22:11:36,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:36,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:36,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:36,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 22:11:36,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:36,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-14 22:11:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:36,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:36,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:36,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 22:11:36,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:36,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-10-14 22:11:36,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:36,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:11:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:11:36,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-14 22:11:36,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:37,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1448 backedges. 763 proven. 2 refuted. 0 times theorem prover too weak. 683 trivial. 0 not checked. [2020-10-14 22:11:37,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62911438] [2020-10-14 22:11:37,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:11:37,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:11:37,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782160497] [2020-10-14 22:11:37,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:11:37,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:11:37,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:11:37,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:11:37,986 INFO L87 Difference]: Start difference. First operand 37289 states and 40998 transitions. Second operand 7 states. [2020-10-14 22:11:43,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:11:43,525 INFO L93 Difference]: Finished difference Result 73915 states and 81298 transitions. [2020-10-14 22:11:43,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 22:11:43,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 949 [2020-10-14 22:11:43,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:11:43,585 INFO L225 Difference]: With dead ends: 73915 [2020-10-14 22:11:43,585 INFO L226 Difference]: Without dead ends: 36971 [2020-10-14 22:11:43,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 22:11:43,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36971 states. [2020-10-14 22:11:43,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36971 to 36955. [2020-10-14 22:11:43,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36955 states. [2020-10-14 22:11:43,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36955 states to 36955 states and 40555 transitions. [2020-10-14 22:11:43,998 INFO L78 Accepts]: Start accepts. Automaton has 36955 states and 40555 transitions. Word has length 949 [2020-10-14 22:11:43,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:11:43,998 INFO L479 AbstractCegarLoop]: Abstraction has 36955 states and 40555 transitions. [2020-10-14 22:11:43,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:11:43,998 INFO L276 IsEmpty]: Start isEmpty. Operand 36955 states and 40555 transitions. [2020-10-14 22:11:44,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2020-10-14 22:11:44,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:11:44,012 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:11:44,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 22:11:44,013 INFO L427 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:11:44,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:11:44,013 INFO L82 PathProgramCache]: Analyzing trace with hash 927623523, now seen corresponding path program 1 times [2020-10-14 22:11:44,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:11:44,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911748025] [2020-10-14 22:11:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:11:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:44,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:44,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:49,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:49,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 970 [2020-10-14 22:11:49,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 22:11:49,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-14 22:11:49,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:49,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:49,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:11:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 679 [2020-10-14 22:11:49,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-14 22:11:49,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:49,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:11:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:49,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:49,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:49,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:11:49,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:49,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 22:11:49,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:49,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:49,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:49,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:49,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:11:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:49,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:49,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:49,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:11:49,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:49,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 22:11:49,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:49,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:49,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:49,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:49,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:11:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:49,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:49,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:49,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 22:11:49,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:49,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 22:11:49,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:49,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:49,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:49,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:49,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:49,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 22:11:49,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-14 22:11:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:49,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:49,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:49,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 22:11:49,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:49,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 22:11:49,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:49,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:49,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:49,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:49,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-14 22:11:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:49,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:49,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:49,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 22:11:49,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:49,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 22:11:49,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:49,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:49,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 22:11:49,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:49,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2020-10-14 22:11:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:49,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:49,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:49,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 22:11:49,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-14 22:11:49,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:49,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:11:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:11:49,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-14 22:11:49,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 766 proven. 2 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2020-10-14 22:11:50,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911748025] [2020-10-14 22:11:50,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:11:50,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:11:50,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620965455] [2020-10-14 22:11:50,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:11:50,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:11:50,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:11:50,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:11:50,661 INFO L87 Difference]: Start difference. First operand 36955 states and 40555 transitions. Second operand 7 states. [2020-10-14 22:11:55,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 22:11:55,631 INFO L93 Difference]: Finished difference Result 76278 states and 83679 transitions. [2020-10-14 22:11:55,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 22:11:55,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 952 [2020-10-14 22:11:55,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 22:11:55,696 INFO L225 Difference]: With dead ends: 76278 [2020-10-14 22:11:55,696 INFO L226 Difference]: Without dead ends: 39668 [2020-10-14 22:11:55,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 22:11:55,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39668 states. [2020-10-14 22:11:56,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39668 to 38985. [2020-10-14 22:11:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38985 states. [2020-10-14 22:11:56,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38985 states to 38985 states and 42563 transitions. [2020-10-14 22:11:56,127 INFO L78 Accepts]: Start accepts. Automaton has 38985 states and 42563 transitions. Word has length 952 [2020-10-14 22:11:56,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 22:11:56,128 INFO L479 AbstractCegarLoop]: Abstraction has 38985 states and 42563 transitions. [2020-10-14 22:11:56,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 22:11:56,128 INFO L276 IsEmpty]: Start isEmpty. Operand 38985 states and 42563 transitions. [2020-10-14 22:11:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2020-10-14 22:11:56,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 22:11:56,145 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 22:11:56,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 22:11:56,145 INFO L427 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 22:11:56,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 22:11:56,145 INFO L82 PathProgramCache]: Analyzing trace with hash -515967213, now seen corresponding path program 1 times [2020-10-14 22:11:56,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 22:11:56,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372626589] [2020-10-14 22:11:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 22:11:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:56,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:56,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:58,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:58,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-14 22:11:58,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 22:11:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2183 [2020-10-14 22:11:58,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:58,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:11:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-14 22:11:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-14 22:11:58,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:58,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 22:11:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:58,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:58,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:58,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 22:11:58,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:58,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 22:11:58,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:58,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:58,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:58,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:58,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 22:11:58,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:58,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:58,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-14 22:11:58,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:58,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 22:11:58,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:58,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:58,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:58,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-14 22:11:58,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:58,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:58,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:58,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 22:11:58,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:58,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 22:11:58,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:58,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 22:11:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 22:11:58,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-14 22:11:58,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:59,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-14 22:11:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:59,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:59,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:59,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-14 22:11:59,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:59,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 22:11:59,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:59,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 22:11:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 22:11:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-14 22:11:59,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:59,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2020-10-14 22:11:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 22:11:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 22:11:59,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 22:11:59,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 22:11:59,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 22:11:59,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 22:11:59,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 22:11:59,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 22:11:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 22:11:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 274 [2020-10-14 22:11:59,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 22:11:59,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 22:11:59,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 549 proven. 248 refuted. 0 times theorem prover too weak. 679 trivial. 0 not checked. [2020-10-14 22:11:59,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372626589] [2020-10-14 22:11:59,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 22:11:59,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 22:11:59,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704157924] [2020-10-14 22:11:59,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 22:11:59,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 22:11:59,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 22:11:59,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 22:11:59,929 INFO L87 Difference]: Start difference. First operand 38985 states and 42563 transitions. Second operand 7 states.