/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 SingleStatement --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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_o10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:55:08,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:55:08,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:55:08,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:55:08,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:55:08,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:55:08,131 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:55:08,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:55:08,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:55:08,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:55:08,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:55:08,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:55:08,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:55:08,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:55:08,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:55:08,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:55:08,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:55:08,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:55:08,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:55:08,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:55:08,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:55:08,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:55:08,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:55:08,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:55:08,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:55:08,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:55:08,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:55:08,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:55:08,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:55:08,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:55:08,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:55:08,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:55:08,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:55:08,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:55:08,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:55:08,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:55:08,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:55:08,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:55:08,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:55:08,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:55:08,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:55:08,171 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 [2020-09-25 00:55:08,212 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:55:08,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:55:08,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:55:08,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:55:08,218 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:55:08,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:55:08,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:55:08,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:55:08,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:55:08,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:55:08,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:55:08,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:55:08,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:55:08,220 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:55:08,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:55:08,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:55:08,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:55:08,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:55:08,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:55:08,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:55:08,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:55:08,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:55:08,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:55:08,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:55:08,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:55:08,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:55:08,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:55:08,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:55:08,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:55:08,225 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 -> SingleStatement 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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=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=DEEPEST;log-additional-information=true; [2020-09-25 00:55:08,716 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:55:08,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:55:08,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:55:08,751 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:55:08,752 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:55:08,754 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o10.c [2020-09-25 00:55:08,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcf3e48c6/5abc3a3be3454a4999b7206cf1c00b4e/FLAG1b425a57e [2020-09-25 00:55:09,446 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:55:09,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o10.c [2020-09-25 00:55:09,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcf3e48c6/5abc3a3be3454a4999b7206cf1c00b4e/FLAG1b425a57e [2020-09-25 00:55:09,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcf3e48c6/5abc3a3be3454a4999b7206cf1c00b4e [2020-09-25 00:55:09,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:55:09,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:55:09,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:55:09,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:55:09,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:55:09,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:55:09" (1/1) ... [2020-09-25 00:55:09,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef001ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:09, skipping insertion in model container [2020-09-25 00:55:09,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:55:09" (1/1) ... [2020-09-25 00:55:09,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:55:09,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:55:10,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:55:10,058 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:55:10,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:55:10,093 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:55:10,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:10 WrapperNode [2020-09-25 00:55:10,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:55:10,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:55:10,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:55:10,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:55:10,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:10" (1/1) ... [2020-09-25 00:55:10,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:10" (1/1) ... [2020-09-25 00:55:10,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:10" (1/1) ... [2020-09-25 00:55:10,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:10" (1/1) ... [2020-09-25 00:55:10,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:10" (1/1) ... [2020-09-25 00:55:10,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:10" (1/1) ... [2020-09-25 00:55:10,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:10" (1/1) ... [2020-09-25 00:55:10,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:55:10,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:55:10,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:55:10,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:55:10,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:10" (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 [2020-09-25 00:55:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:55:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:55:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 00:55:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:55:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 00:55:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:55:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 00:55:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:55:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:55:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:55:10,492 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:55:10,492 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:55:10,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:55:10 BoogieIcfgContainer [2020-09-25 00:55:10,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:55:10,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:55:10,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:55:10,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:55:10,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:55:09" (1/3) ... [2020-09-25 00:55:10,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec2f6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:55:10, skipping insertion in model container [2020-09-25 00:55:10,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:55:10" (2/3) ... [2020-09-25 00:55:10,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec2f6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:55:10, skipping insertion in model container [2020-09-25 00:55:10,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:55:10" (3/3) ... [2020-09-25 00:55:10,507 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o10.c [2020-09-25 00:55:10,518 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:55:10,528 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:55:10,549 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:55:10,575 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:55:10,575 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:55:10,576 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:55:10,576 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:55:10,576 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:55:10,576 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:55:10,576 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:55:10,576 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:55:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-25 00:55:10,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 00:55:10,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:10,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:10,606 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:10,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:10,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-25 00:55:10,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:10,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925662354] [2020-09-25 00:55:10,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:10,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:10,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:55:10,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 00:55:10,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:55:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:55:10,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:10,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:55:10,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:10,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:10,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:10,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:10,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:10,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:55:10,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:10,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:10,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:10,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:10,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:10,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:11,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:11,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 00:55:11,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:11,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:11,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:11,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:55:11,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925662354] [2020-09-25 00:55:11,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:55:11,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:55:11,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918865695] [2020-09-25 00:55:11,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:55:11,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:11,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:55:11,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:55:11,103 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-25 00:55:11,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:11,191 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 00:55:11,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:55:11,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 00:55:11,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:11,207 INFO L225 Difference]: With dead ends: 37 [2020-09-25 00:55:11,208 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 00:55:11,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:55:11,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 00:55:11,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-25 00:55:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 00:55:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-25 00:55:11,268 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-25 00:55:11,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:11,268 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-25 00:55:11,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:55:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-25 00:55:11,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 00:55:11,271 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:11,271 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:11,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:55:11,272 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:11,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:11,273 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-25 00:55:11,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:11,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799105846] [2020-09-25 00:55:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:11,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:55:11,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:11,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 00:55:11,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:55:11,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:55:11,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 00:55:11,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 00:55:11,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:11,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:11,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:11,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:55:11,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:11,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:11,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:11,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:11,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:11,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:55:11,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:11,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 00:55:11,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:11,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:11,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:55:11,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:11,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:11,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:11,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:11,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:11,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:11,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 00:55:11,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 00:55:11,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799105846] [2020-09-25 00:55:11,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:11,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:55:11,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508916405] [2020-09-25 00:55:11,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:55:11,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:11,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:55:11,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:55:11,994 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-25 00:55:12,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:12,064 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-25 00:55:12,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:55:12,065 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-25 00:55:12,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:12,067 INFO L225 Difference]: With dead ends: 31 [2020-09-25 00:55:12,067 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 00:55:12,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:55:12,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 00:55:12,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-25 00:55:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 00:55:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 00:55:12,076 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-25 00:55:12,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:12,077 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 00:55:12,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:55:12,078 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 00:55:12,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 00:55:12,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:12,079 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:12,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:55:12,080 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:12,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:12,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-25 00:55:12,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:12,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997799047] [2020-09-25 00:55:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-25 00:55:12,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:12,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 00:55:12,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:55:12,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 00:55:12,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 00:55:12,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:12,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:12,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:12,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:55:12,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:12,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:12,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:12,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:55:12,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:12,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 00:55:12,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:12,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:55:12,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:12,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:55:12,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:12,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 00:55:12,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:12,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:55:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:12,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:12,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:12,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:55:12,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:12,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:12,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 00:55:12,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997799047] [2020-09-25 00:55:12,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:12,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:55:12,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131542983] [2020-09-25 00:55:12,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:55:12,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:12,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:55:12,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:55:12,647 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-25 00:55:12,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:12,742 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-25 00:55:12,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 00:55:12,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-25 00:55:12,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:12,744 INFO L225 Difference]: With dead ends: 35 [2020-09-25 00:55:12,744 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:55:12,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:55:12,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:55:12,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 00:55:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 00:55:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-25 00:55:12,751 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-25 00:55:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:12,752 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-25 00:55:12,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:55:12,752 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-25 00:55:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 00:55:12,754 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:12,754 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:12,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:55:12,754 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:12,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:12,755 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-25 00:55:12,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:12,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612201868] [2020-09-25 00:55:12,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:12,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:12,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:12,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 00:55:12,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:12,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 00:55:12,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:12,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:55:12,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-25 00:55:12,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 00:55:12,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:13,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:13,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:13,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:13,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:13,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:13,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:13,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:13,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:13,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:55:13,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:13,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 00:55:13,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 00:55:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:13,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:13,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:55:13,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:13,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-25 00:55:13,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:13,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:13,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:55:13,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:13,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:13,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:13,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:55:13,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:13,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 00:55:13,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:13,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:55:13,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:13,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:13,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:13,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:13,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:13,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:13,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:55:13,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:13,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:13,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:13,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:13,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 00:55:13,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612201868] [2020-09-25 00:55:13,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:13,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:55:13,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255409588] [2020-09-25 00:55:13,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:55:13,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:13,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:55:13,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:55:13,556 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-25 00:55:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:13,706 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 00:55:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 00:55:13,707 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-25 00:55:13,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:13,709 INFO L225 Difference]: With dead ends: 39 [2020-09-25 00:55:13,709 INFO L226 Difference]: Without dead ends: 34 [2020-09-25 00:55:13,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:55:13,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-25 00:55:13,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-25 00:55:13,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 00:55:13,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-25 00:55:13,717 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-25 00:55:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:13,717 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-25 00:55:13,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:55:13,718 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-25 00:55:13,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 00:55:13,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:13,719 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:13,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:55:13,720 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:13,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:13,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-25 00:55:13,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:13,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175344718] [2020-09-25 00:55:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:13,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:14,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 00:55:14,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:14,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-25 00:55:14,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:55:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 00:55:14,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 00:55:14,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:14,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:14,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:14,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:14,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:14,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:14,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:14,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:14,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:14,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:14,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:14,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:14,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:14,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:55:14,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:14,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-25 00:55:14,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:14,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:14,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:14,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:55:14,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:14,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:14,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:14,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:55:14,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:14,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 00:55:14,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 00:55:14,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:14,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:14,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:14,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:55:14,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 00:55:14,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:14,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:55:14,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:14,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:14,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:14,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:55:14,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:14,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 00:55:14,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:14,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:14,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:55:14,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:14,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:14,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:14,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:14,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:14,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:55:14,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:14,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:14,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:14,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 00:55:14,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175344718] [2020-09-25 00:55:14,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:14,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:55:14,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782544868] [2020-09-25 00:55:14,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:55:14,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:14,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:55:14,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:55:14,899 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-25 00:55:15,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:15,090 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-25 00:55:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 00:55:15,091 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-25 00:55:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:15,092 INFO L225 Difference]: With dead ends: 43 [2020-09-25 00:55:15,093 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 00:55:15,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-25 00:55:15,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 00:55:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 00:55:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 00:55:15,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 00:55:15,101 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-25 00:55:15,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:15,101 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 00:55:15,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:55:15,101 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 00:55:15,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 00:55:15,102 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:15,103 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:15,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:55:15,103 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:15,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:15,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-25 00:55:15,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:15,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460918915] [2020-09-25 00:55:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:15,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:15,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:15,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 00:55:15,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:15,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-09-25 00:55:15,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:55:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 00:55:15,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:55:15,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:15,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:15,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:15,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:15,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:15,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:15,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:15,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:15,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:15,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:15,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:55:15,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:15,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 00:55:15,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:55:15,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:15,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:15,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:16,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:16,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:55:16,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:16,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-25 00:55:16,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:16,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:55:16,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:16,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:16,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:16,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:16,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:55:16,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:16,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 00:55:16,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:16,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 00:55:16,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:16,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:16,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:16,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:16,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:55:16,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:16,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 00:55:16,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:16,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:16,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:16,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:55:16,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:16,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:16,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:16,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:16,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:55:16,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:16,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 00:55:16,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:16,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:16,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:55:16,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:16,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:16,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:16,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:16,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:16,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:16,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 00:55:16,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:16,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:16,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:16,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:16,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 00:55:16,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460918915] [2020-09-25 00:55:16,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:16,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 00:55:16,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721045062] [2020-09-25 00:55:16,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 00:55:16,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:16,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 00:55:16,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:55:16,781 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-25 00:55:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:17,061 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-25 00:55:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 00:55:17,062 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-25 00:55:17,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:17,063 INFO L225 Difference]: With dead ends: 47 [2020-09-25 00:55:17,063 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 00:55:17,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:55:17,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 00:55:17,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 00:55:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 00:55:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-25 00:55:17,076 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-25 00:55:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:17,077 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-25 00:55:17,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 00:55:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-25 00:55:17,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-25 00:55:17,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:17,080 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:17,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:55:17,081 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:17,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:17,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-25 00:55:17,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:17,082 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68065195] [2020-09-25 00:55:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:17,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:17,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:17,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 00:55:17,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:17,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-09-25 00:55:17,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 00:55:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-25 00:55:17,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:55:17,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:17,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:17,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:17,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:17,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:17,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:17,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:17,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:17,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:17,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:17,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:17,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:55:17,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:17,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:18,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:18,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 00:55:18,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:18,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-09-25 00:55:18,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:18,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:55:18,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:18,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 00:55:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:18,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:18,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:18,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:55:18,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:18,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-25 00:55:18,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:18,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:18,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:55:18,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:18,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:18,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:18,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:18,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:55:18,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 00:55:18,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:18,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:18,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:55:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:18,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:18,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:19,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:19,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:55:19,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:19,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 00:55:19,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:19,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:19,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:19,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 00:55:19,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:19,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:19,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:19,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:19,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:55:19,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:19,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 00:55:19,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:19,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:19,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:55:19,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:19,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:19,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:19,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:19,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:55:19,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:19,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 00:55:19,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:19,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:19,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:55:19,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:19,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:19,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:19,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:19,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:19,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:55:19,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:19,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:19,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:19,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 00:55:19,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68065195] [2020-09-25 00:55:19,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:19,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 00:55:19,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257974661] [2020-09-25 00:55:19,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 00:55:19,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:19,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 00:55:19,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-25 00:55:19,468 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-25 00:55:19,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:19,808 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-25 00:55:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 00:55:19,809 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-25 00:55:19,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:19,810 INFO L225 Difference]: With dead ends: 51 [2020-09-25 00:55:19,810 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 00:55:19,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-25 00:55:19,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 00:55:19,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-25 00:55:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 00:55:19,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-25 00:55:19,824 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-25 00:55:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:19,826 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-25 00:55:19,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 00:55:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-25 00:55:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 00:55:19,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:19,831 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:19,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:55:19,834 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:19,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:19,834 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-25 00:55:19,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:19,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870779575] [2020-09-25 00:55:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:19,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:20,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:20,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 00:55:20,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:20,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 710 [2020-09-25 00:55:20,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:20,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 00:55:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 00:55:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 00:55:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:20,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:20,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:20,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:20,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:20,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:20,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:20,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:21,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:21,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 00:55:21,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:21,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-09-25 00:55:21,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:55:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:21,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 00:55:21,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:21,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:21,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:21,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:21,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 00:55:21,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:21,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-09-25 00:55:21,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:21,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:55:21,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:21,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 00:55:21,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:21,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:21,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:22,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:22,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:55:22,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-25 00:55:22,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:22,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:55:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:22,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:22,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:22,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:22,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:55:22,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:22,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 00:55:22,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:22,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:55:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:22,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:22,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:22,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:22,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:55:22,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 00:55:22,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 00:55:22,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:22,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:22,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:22,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:22,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:55:22,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:22,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 00:55:22,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:22,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:55:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:22,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:22,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:22,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:22,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:55:22,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:22,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 00:55:22,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:22,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:55:22,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:22,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:22,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:22,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:22,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:22,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:22,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:22,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 00:55:22,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:22,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:22,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:22,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:22,871 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 00:55:22,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870779575] [2020-09-25 00:55:22,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:22,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 00:55:22,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491185194] [2020-09-25 00:55:22,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 00:55:22,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:22,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 00:55:22,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:55:22,874 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-25 00:55:23,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:23,244 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-25 00:55:23,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 00:55:23,245 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-25 00:55:23,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:23,246 INFO L225 Difference]: With dead ends: 55 [2020-09-25 00:55:23,248 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 00:55:23,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-25 00:55:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 00:55:23,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-25 00:55:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 00:55:23,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-25 00:55:23,262 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-25 00:55:23,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:23,262 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-25 00:55:23,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 00:55:23,262 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-25 00:55:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 00:55:23,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:23,265 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:23,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:55:23,266 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:23,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:23,267 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-25 00:55:23,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:23,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738608971] [2020-09-25 00:55:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:23,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:24,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:24,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 00:55:24,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:24,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 822 [2020-09-25 00:55:24,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:24,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 00:55:24,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 00:55:24,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:55:24,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:24,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:24,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:24,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:24,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:24,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:24,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:24,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:24,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:24,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:24,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:24,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:24,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 00:55:24,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:24,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-09-25 00:55:24,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:24,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:55:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 00:55:24,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:24,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:24,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:25,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:25,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 00:55:25,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-09-25 00:55:25,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:55:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:25,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 00:55:25,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:25,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:25,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:25,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 00:55:25,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:25,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-09-25 00:55:25,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:25,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:55:25,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:25,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 00:55:25,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:25,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:25,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:26,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:26,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:55:26,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-25 00:55:26,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:55:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:26,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:26,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:26,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:26,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:55:26,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:26,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 00:55:26,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:26,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:26,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:26,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:55:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:26,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:26,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:26,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:26,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:55:26,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:26,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 00:55:26,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:26,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:26,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 00:55:26,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:26,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:26,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:26,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:26,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:55:26,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:26,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 00:55:26,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:26,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:55:26,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:26,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:26,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:26,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:26,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:55:26,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:26,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 00:55:26,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:26,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:26,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:55:26,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:26,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:27,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:27,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:27,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:27,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:55:27,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:27,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:27,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 00:55:27,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738608971] [2020-09-25 00:55:27,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:27,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 00:55:27,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723125841] [2020-09-25 00:55:27,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 00:55:27,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:27,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 00:55:27,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-25 00:55:27,086 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-25 00:55:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:27,571 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 00:55:27,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 00:55:27,572 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-25 00:55:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:27,573 INFO L225 Difference]: With dead ends: 59 [2020-09-25 00:55:27,573 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 00:55:27,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-25 00:55:27,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 00:55:27,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-25 00:55:27,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 00:55:27,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-25 00:55:27,581 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-25 00:55:27,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:27,582 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-25 00:55:27,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 00:55:27,582 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-25 00:55:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 00:55:27,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:27,583 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:27,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:55:27,584 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:27,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:27,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-25 00:55:27,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:27,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [134177905] [2020-09-25 00:55:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:27,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:28,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:28,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 00:55:28,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-09-25 00:55:28,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 00:55:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 00:55:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:55:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:28,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:55:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:28,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:28,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:28,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:55:28,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:28,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:55:28,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:28,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:55:28,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:28,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:55:28,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:28,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-25 00:55:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:28,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:29,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:29,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 00:55:29,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:29,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-09-25 00:55:29,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 00:55:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:29,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 00:55:29,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:29,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:29,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:30,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:30,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 00:55:30,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 642 [2020-09-25 00:55:30,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 00:55:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:30,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 00:55:30,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:55:30,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:30,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:30,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:30,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 00:55:30,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:30,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 00:55:30,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 00:55:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 00:55:30,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:30,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:30,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 00:55:31,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-09-25 00:55:31,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 00:55:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 00:55:31,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:31,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:31,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 00:55:31,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:31,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-25 00:55:31,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:55:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:55:31,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:31,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:31,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:55:31,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:31,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 00:55:31,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:55:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:31,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 00:55:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:31,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:31,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 00:55:31,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:31,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 00:55:31,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:55:31,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:31,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 00:55:31,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:55:31,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:31,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:31,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 00:55:31,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:31,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 00:55:31,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:55:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:31,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:55:31,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:32,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:32,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:32,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:32,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 00:55:32,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:32,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 00:55:32,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:55:32,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:32,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:55:32,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:32,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 00:55:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:55:32,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:32,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:55:32,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:55:32,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:55:32,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:55:32,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:55:32,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:55:32,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:55:32,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:55:32,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:55:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 00:55:32,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [134177905] [2020-09-25 00:55:32,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:55:32,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 00:55:32,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375328271] [2020-09-25 00:55:32,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 00:55:32,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:55:32,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 00:55:32,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:55:32,387 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-25 00:55:33,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:55:33,018 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-25 00:55:33,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 00:55:33,018 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-25 00:55:33,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:55:33,019 INFO L225 Difference]: With dead ends: 63 [2020-09-25 00:55:33,020 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 00:55:33,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 00:55:33,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 00:55:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 00:55:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 00:55:33,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 00:55:33,027 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-25 00:55:33,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:55:33,028 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 00:55:33,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 00:55:33,028 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 00:55:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 00:55:33,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:55:33,029 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:55:33,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 00:55:33,029 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:55:33,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:55:33,030 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-25 00:55:33,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:55:33,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171757986] [2020-09-25 00:55:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:55:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:55:33,053 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:55:33,053 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:55:33,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 00:55:33,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:55:33 BoogieIcfgContainer [2020-09-25 00:55:33,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:55:33,083 INFO L168 Benchmark]: Toolchain (without parser) took 23321.37 ms. Allocated memory was 145.2 MB in the beginning and 438.3 MB in the end (delta: 293.1 MB). Free memory was 101.7 MB in the beginning and 314.0 MB in the end (delta: -212.3 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2020-09-25 00:55:33,083 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 145.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 00:55:33,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.58 ms. Allocated memory is still 145.2 MB. Free memory was 101.0 MB in the beginning and 91.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:55:33,085 INFO L168 Benchmark]: Boogie Preprocessor took 32.53 ms. Allocated memory is still 145.2 MB. Free memory was 91.9 MB in the beginning and 90.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:55:33,086 INFO L168 Benchmark]: RCFGBuilder took 369.50 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 90.5 MB in the beginning and 170.0 MB in the end (delta: -79.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-25 00:55:33,086 INFO L168 Benchmark]: TraceAbstraction took 22581.84 ms. Allocated memory was 201.9 MB in the beginning and 438.3 MB in the end (delta: 236.5 MB). Free memory was 169.3 MB in the beginning and 314.0 MB in the end (delta: -144.7 MB). Peak memory consumption was 91.8 MB. Max. memory is 7.1 GB. [2020-09-25 00:55:33,090 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 145.2 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 327.58 ms. Allocated memory is still 145.2 MB. Free memory was 101.0 MB in the beginning and 91.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.53 ms. Allocated memory is still 145.2 MB. Free memory was 91.9 MB in the beginning and 90.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 369.50 ms. Allocated memory was 145.2 MB in the beginning and 201.9 MB in the end (delta: 56.6 MB). Free memory was 90.5 MB in the beginning and 170.0 MB in the end (delta: -79.5 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 22581.84 ms. Allocated memory was 201.9 MB in the beginning and 438.3 MB in the end (delta: 236.5 MB). Free memory was 169.3 MB in the beginning and 314.0 MB in the end (delta: -144.7 MB). Peak memory consumption was 91.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] unsigned int input = __VERIFIER_nondet_uint(); [L11] CALL, EXPR id(input) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND FALSE !(x==0) [L6] CALL, EXPR id(x-1) [L5] COND TRUE x==0 [L5] return 0; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L6] RET, EXPR id(x-1) [L6] return id(x-1) + 1; [L11] RET, EXPR id(input) [L11] unsigned int result = id(input); [L12] COND TRUE result == 10 [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 22.4s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 320 SDtfs, 57 SDslu, 3501 SDs, 0 SdLazy, 1432 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 325 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 19.0s InterpolantComputationTime, 561 NumberOfCodeBlocks, 561 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 465 ConstructedInterpolants, 0 QuantifiedInterpolants, 106195 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 450/1020 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...