/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:38:13,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:38:13,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:38:13,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:38:13,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:38:13,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:38:13,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:38:13,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:38:13,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:38:13,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:38:13,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:38:13,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:38:13,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:38:13,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:38:13,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:38:13,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:38:13,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:38:13,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:38:13,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:38:13,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:38:13,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:38:13,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:38:13,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:38:13,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:38:13,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:38:13,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:38:13,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:38:13,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:38:13,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:38:13,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:38:13,223 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:38:13,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:38:13,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:38:13,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:38:13,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:38:13,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:38:13,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:38:13,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:38:13,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:38:13,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:38:13,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:38:13,232 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 14:38:13,275 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:38:13,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:38:13,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:38:13,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:38:13,278 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:38:13,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:38:13,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:38:13,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:38:13,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:38:13,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:38:13,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:38:13,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:38:13,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:38:13,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:38:13,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:38:13,282 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:38:13,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:38:13,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:38:13,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:38:13,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:38:13,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:38:13,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:38:13,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:38:13,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:38:13,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:38:13,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:38:13,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:38:13,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:38:13,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:38:13,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:38:13,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:38:13,592 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:38:13,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:38:13,597 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:38:13,597 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:38:13,597 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06.c [2020-10-12 14:38:13,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df5b15bd5/d2dc988329864c9cb15e29bc250a6455/FLAGd60452374 [2020-10-12 14:38:14,426 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:38:14,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label06.c [2020-10-12 14:38:14,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df5b15bd5/d2dc988329864c9cb15e29bc250a6455/FLAGd60452374 [2020-10-12 14:38:14,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df5b15bd5/d2dc988329864c9cb15e29bc250a6455 [2020-10-12 14:38:14,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:38:14,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:38:14,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:38:14,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:38:14,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:38:14,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:38:14" (1/1) ... [2020-10-12 14:38:14,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5d5e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:14, skipping insertion in model container [2020-10-12 14:38:14,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:38:14" (1/1) ... [2020-10-12 14:38:14,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:38:14,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:38:15,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:38:15,905 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:38:16,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:38:16,446 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:38:16,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:16 WrapperNode [2020-10-12 14:38:16,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:38:16,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:38:16,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:38:16,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:38:16,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:16" (1/1) ... [2020-10-12 14:38:16,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:16" (1/1) ... [2020-10-12 14:38:16,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:16" (1/1) ... [2020-10-12 14:38:16,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:16" (1/1) ... [2020-10-12 14:38:16,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:16" (1/1) ... [2020-10-12 14:38:16,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:16" (1/1) ... [2020-10-12 14:38:16,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:16" (1/1) ... [2020-10-12 14:38:16,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:38:16,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:38:16,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:38:16,703 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:38:16,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:38:16,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:38:16,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:38:16,769 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:38:16,770 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:38:16,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:38:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:38:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:38:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:38:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:38:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:38:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:38:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:38:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:38:25,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:38:25,717 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:38:25,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:38:25 BoogieIcfgContainer [2020-10-12 14:38:25,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:38:25,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:38:25,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:38:25,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:38:25,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:38:14" (1/3) ... [2020-10-12 14:38:25,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665329c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:38:25, skipping insertion in model container [2020-10-12 14:38:25,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:38:16" (2/3) ... [2020-10-12 14:38:25,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665329c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:38:25, skipping insertion in model container [2020-10-12 14:38:25,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:38:25" (3/3) ... [2020-10-12 14:38:25,748 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label06.c [2020-10-12 14:38:25,760 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:38:25,769 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:38:25,785 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:38:25,814 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:38:25,814 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:38:25,814 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:38:25,814 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:38:25,814 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:38:25,815 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:38:25,815 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:38:25,815 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:38:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-12 14:38:25,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 14:38:25,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:38:25,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:38:25,858 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:38:25,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:38:25,865 INFO L82 PathProgramCache]: Analyzing trace with hash 2014281761, now seen corresponding path program 1 times [2020-10-12 14:38:25,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:38:25,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339598574] [2020-10-12 14:38:25,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:38:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:26,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:26,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:26,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 14:38:26,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:26,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-12 14:38:26,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:38:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:38:26,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 14:38:26,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:38:26,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:38:26,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:26,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:26,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:26,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:38:26,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:26,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:38:26,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:26,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:38:26,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:38:26,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:38:26,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:38:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:38:26,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339598574] [2020-10-12 14:38:26,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:38:26,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:38:26,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379170910] [2020-10-12 14:38:26,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:38:26,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:38:26,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:38:26,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:38:26,741 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-12 14:38:39,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:38:39,429 INFO L93 Difference]: Finished difference Result 1692 states and 3091 transitions. [2020-10-12 14:38:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:38:39,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-12 14:38:39,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:38:39,459 INFO L225 Difference]: With dead ends: 1692 [2020-10-12 14:38:39,459 INFO L226 Difference]: Without dead ends: 1012 [2020-10-12 14:38:39,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:38:39,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-12 14:38:39,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 1002. [2020-10-12 14:38:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1002 states. [2020-10-12 14:38:39,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1542 transitions. [2020-10-12 14:38:39,596 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1542 transitions. Word has length 37 [2020-10-12 14:38:39,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:38:39,597 INFO L479 AbstractCegarLoop]: Abstraction has 1002 states and 1542 transitions. [2020-10-12 14:38:39,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:38:39,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1542 transitions. [2020-10-12 14:38:39,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-12 14:38:39,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:38:39,604 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:38:39,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:38:39,604 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:38:39,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:38:39,605 INFO L82 PathProgramCache]: Analyzing trace with hash 607875575, now seen corresponding path program 1 times [2020-10-12 14:38:39,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:38:39,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366311197] [2020-10-12 14:38:39,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:38:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:39,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:40,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:41,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:41,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-12 14:38:41,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:38:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1477 [2020-10-12 14:38:41,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:38:41,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:38:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:38:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:38:41,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:38:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:41,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:41,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:41,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:38:41,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:41,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:38:41,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:41,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:38:41,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:38:41,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:38:41,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:38:41,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:38:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:41,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:41,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:41,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:38:41,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:38:41,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-12 14:38:41,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:38:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:38:41,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:38:41,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:38:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 14:38:41,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366311197] [2020-10-12 14:38:41,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:38:41,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:38:41,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562146772] [2020-10-12 14:38:41,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:38:41,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:38:41,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:38:41,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:38:41,669 INFO L87 Difference]: Start difference. First operand 1002 states and 1542 transitions. Second operand 6 states. [2020-10-12 14:38:57,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:38:57,304 INFO L93 Difference]: Finished difference Result 2938 states and 4545 transitions. [2020-10-12 14:38:57,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:38:57,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-12 14:38:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:38:57,317 INFO L225 Difference]: With dead ends: 2938 [2020-10-12 14:38:57,318 INFO L226 Difference]: Without dead ends: 1942 [2020-10-12 14:38:57,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:38:57,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2020-10-12 14:38:57,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1930. [2020-10-12 14:38:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-12 14:38:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2595 transitions. [2020-10-12 14:38:57,446 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2595 transitions. Word has length 108 [2020-10-12 14:38:57,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:38:57,446 INFO L479 AbstractCegarLoop]: Abstraction has 1930 states and 2595 transitions. [2020-10-12 14:38:57,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:38:57,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2595 transitions. [2020-10-12 14:38:57,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-12 14:38:57,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:38:57,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:38:57,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:38:57,459 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:38:57,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:38:57,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1732201911, now seen corresponding path program 1 times [2020-10-12 14:38:57,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:38:57,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837792164] [2020-10-12 14:38:57,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:38:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:57,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:58,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:58,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-12 14:38:58,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:38:58,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-12 14:38:58,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:38:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:38:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-12 14:38:58,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:38:58,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:38:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:58,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:58,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:58,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:38:58,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:58,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 14:38:58,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:58,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:38:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:38:58,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:38:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 14:38:58,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:38:58,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:38:58,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:38:58,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:38:58,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 14:38:58,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:38:58,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 14:38:58,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:38:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:38:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:38:58,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:38:58,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:38:58,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:38:58,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837792164] [2020-10-12 14:38:58,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:38:58,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:38:58,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376577134] [2020-10-12 14:38:58,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:38:58,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:38:58,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:38:58,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:38:58,994 INFO L87 Difference]: Start difference. First operand 1930 states and 2595 transitions. Second operand 8 states. [2020-10-12 14:39:21,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:39:21,503 INFO L93 Difference]: Finished difference Result 4331 states and 5702 transitions. [2020-10-12 14:39:21,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 14:39:21,505 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-12 14:39:21,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:39:21,516 INFO L225 Difference]: With dead ends: 4331 [2020-10-12 14:39:21,517 INFO L226 Difference]: Without dead ends: 2373 [2020-10-12 14:39:21,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:39:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2020-10-12 14:39:21,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2368. [2020-10-12 14:39:21,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2368 states. [2020-10-12 14:39:21,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2368 states to 2368 states and 3047 transitions. [2020-10-12 14:39:21,584 INFO L78 Accepts]: Start accepts. Automaton has 2368 states and 3047 transitions. Word has length 111 [2020-10-12 14:39:21,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:39:21,585 INFO L479 AbstractCegarLoop]: Abstraction has 2368 states and 3047 transitions. [2020-10-12 14:39:21,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:39:21,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2368 states and 3047 transitions. [2020-10-12 14:39:21,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-12 14:39:21,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:39:21,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:39:21,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:39:21,588 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:39:21,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:39:21,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1750709353, now seen corresponding path program 1 times [2020-10-12 14:39:21,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:39:21,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963040418] [2020-10-12 14:39:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:39:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:21,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:21,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:21,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 14:39:21,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:21,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-12 14:39:21,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:39:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:39:21,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 14:39:21,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:21,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:39:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:21,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:21,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:21,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:39:21,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:21,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:39:21,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:21,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:39:21,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:21,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:39:21,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:39:22,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:39:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:22,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:22,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:22,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:39:22,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:22,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 14:39:22,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:39:22,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:39:22,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:39:22,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963040418] [2020-10-12 14:39:22,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:39:22,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:39:22,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736341022] [2020-10-12 14:39:22,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:39:22,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:39:22,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:39:22,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:39:22,171 INFO L87 Difference]: Start difference. First operand 2368 states and 3047 transitions. Second operand 5 states. [2020-10-12 14:39:22,732 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2020-10-12 14:39:36,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:39:36,700 INFO L93 Difference]: Finished difference Result 6083 states and 8123 transitions. [2020-10-12 14:39:36,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:39:36,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-12 14:39:36,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:39:36,722 INFO L225 Difference]: With dead ends: 6083 [2020-10-12 14:39:36,722 INFO L226 Difference]: Without dead ends: 4154 [2020-10-12 14:39:36,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:39:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4154 states. [2020-10-12 14:39:36,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4154 to 4151. [2020-10-12 14:39:36,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4151 states. [2020-10-12 14:39:36,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4151 states to 4151 states and 5229 transitions. [2020-10-12 14:39:36,844 INFO L78 Accepts]: Start accepts. Automaton has 4151 states and 5229 transitions. Word has length 124 [2020-10-12 14:39:36,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:39:36,847 INFO L479 AbstractCegarLoop]: Abstraction has 4151 states and 5229 transitions. [2020-10-12 14:39:36,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:39:36,848 INFO L276 IsEmpty]: Start isEmpty. Operand 4151 states and 5229 transitions. [2020-10-12 14:39:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-12 14:39:36,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:39:36,853 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:39:36,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:39:36,854 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:39:36,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:39:36,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1807852993, now seen corresponding path program 1 times [2020-10-12 14:39:36,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:39:36,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813176024] [2020-10-12 14:39:36,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:39:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:36,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:37,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:38,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:38,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-12 14:39:38,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:39:38,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1102 [2020-10-12 14:39:38,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:39:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-12 14:39:38,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 14:39:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:38,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:39:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:38,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:38,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:39:38,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:38,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:39:38,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:39:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:38,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:39:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:38,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:39:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:38,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:38,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:38,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:39:38,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:38,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-12 14:39:38,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:39:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:39:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-12 14:39:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:38,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:39:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:39:38,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:39:38,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:39:38,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:39:38,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:39:38,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 14:39:38,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:39:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:39:38,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:39:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:39:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:39:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:39:38,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813176024] [2020-10-12 14:39:38,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:39:38,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:39:38,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139544567] [2020-10-12 14:39:38,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:39:38,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:39:38,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:39:38,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:39:38,484 INFO L87 Difference]: Start difference. First operand 4151 states and 5229 transitions. Second operand 7 states. [2020-10-12 14:40:01,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:01,447 INFO L93 Difference]: Finished difference Result 9858 states and 13266 transitions. [2020-10-12 14:40:01,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:40:01,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-10-12 14:40:01,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:01,484 INFO L225 Difference]: With dead ends: 9858 [2020-10-12 14:40:01,484 INFO L226 Difference]: Without dead ends: 6146 [2020-10-12 14:40:01,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:40:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6146 states. [2020-10-12 14:40:01,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6146 to 6062. [2020-10-12 14:40:01,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6062 states. [2020-10-12 14:40:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6062 states to 6062 states and 7625 transitions. [2020-10-12 14:40:01,655 INFO L78 Accepts]: Start accepts. Automaton has 6062 states and 7625 transitions. Word has length 195 [2020-10-12 14:40:01,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:01,658 INFO L479 AbstractCegarLoop]: Abstraction has 6062 states and 7625 transitions. [2020-10-12 14:40:01,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:40:01,659 INFO L276 IsEmpty]: Start isEmpty. Operand 6062 states and 7625 transitions. [2020-10-12 14:40:01,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-12 14:40:01,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:01,663 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:40:01,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:40:01,663 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:01,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:01,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1218572873, now seen corresponding path program 1 times [2020-10-12 14:40:01,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:01,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093811275] [2020-10-12 14:40:01,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:01,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:01,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:03,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:04,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:04,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-12 14:40:04,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:40:04,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3183 [2020-10-12 14:40:04,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:40:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:40:04,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-12 14:40:04,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:05,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:05,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:05,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:05,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:05,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:40:05,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:40:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:05,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:40:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:05,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:05,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:05,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:05,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:05,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:40:05,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:05,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-12 14:40:05,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:40:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:40:05,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:40:05,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:40:05,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:40:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:05,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:05,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:05,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 14:40:05,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:05,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-12 14:40:05,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:05,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:40:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:40:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 14:40:05,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 61 proven. 73 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:40:05,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093811275] [2020-10-12 14:40:05,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:40:05,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 14:40:05,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125143988] [2020-10-12 14:40:05,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:40:05,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:05,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:40:05,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:40:05,979 INFO L87 Difference]: Start difference. First operand 6062 states and 7625 transitions. Second operand 10 states. [2020-10-12 14:40:06,135 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-10-12 14:40:38,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:40:38,302 INFO L93 Difference]: Finished difference Result 12868 states and 16483 transitions. [2020-10-12 14:40:38,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 14:40:38,305 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 199 [2020-10-12 14:40:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:40:38,337 INFO L225 Difference]: With dead ends: 12868 [2020-10-12 14:40:38,337 INFO L226 Difference]: Without dead ends: 7245 [2020-10-12 14:40:38,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2020-10-12 14:40:38,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2020-10-12 14:40:38,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 7076. [2020-10-12 14:40:38,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7076 states. [2020-10-12 14:40:38,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7076 states to 7076 states and 8886 transitions. [2020-10-12 14:40:38,511 INFO L78 Accepts]: Start accepts. Automaton has 7076 states and 8886 transitions. Word has length 199 [2020-10-12 14:40:38,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:40:38,512 INFO L479 AbstractCegarLoop]: Abstraction has 7076 states and 8886 transitions. [2020-10-12 14:40:38,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:40:38,512 INFO L276 IsEmpty]: Start isEmpty. Operand 7076 states and 8886 transitions. [2020-10-12 14:40:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-12 14:40:38,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:40:38,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:40:38,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:40:38,516 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:40:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:40:38,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1162013826, now seen corresponding path program 1 times [2020-10-12 14:40:38,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:40:38,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684939165] [2020-10-12 14:40:38,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:40:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:38,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:38,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:38,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:43,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:43,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-12 14:40:43,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:40:43,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4641 [2020-10-12 14:40:43,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:43,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 14:40:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-12 14:40:43,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-12 14:40:43,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:43,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:40:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:43,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:43,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:40:43,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:43,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:40:43,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:43,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:43,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:43,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:40:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:43,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:43,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:40:43,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:40:43,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 14:40:43,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:43,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:40:43,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:43,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:40:43,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:43,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:40:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:40:43,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:40:44,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:40:44,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:40:44,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:40:44,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-12 14:40:44,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:40:44,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 14:40:44,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:40:44,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 14:40:44,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:40:44,542 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-10-12 14:40:44,715 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-10-12 14:40:44,932 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-10-12 14:40:45,198 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-12 14:40:45,425 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-12 14:40:45,629 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-12 14:40:45,823 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-10-12 14:40:46,116 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-12 14:40:46,412 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-10-12 14:40:46,702 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-12 14:40:46,969 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-12 14:40:47,202 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2020-10-12 14:40:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-12 14:40:47,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684939165] [2020-10-12 14:40:47,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:40:47,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 14:40:47,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411596494] [2020-10-12 14:40:47,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 14:40:47,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:40:47,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 14:40:47,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2020-10-12 14:40:47,562 INFO L87 Difference]: Start difference. First operand 7076 states and 8886 transitions. Second operand 20 states. [2020-10-12 14:40:49,108 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-12 14:40:49,514 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-12 14:40:50,043 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-12 14:40:50,286 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-12 14:40:50,604 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-12 14:40:50,922 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-12 14:40:51,376 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-12 14:40:51,739 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-12 14:40:52,001 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-12 14:40:52,250 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-12 14:40:52,584 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-12 14:40:52,810 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-12 14:40:53,062 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-12 14:41:12,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:41:12,745 INFO L93 Difference]: Finished difference Result 8287 states and 11984 transitions. [2020-10-12 14:41:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 14:41:12,749 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 210 [2020-10-12 14:41:12,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:41:12,793 INFO L225 Difference]: With dead ends: 8287 [2020-10-12 14:41:12,794 INFO L226 Difference]: Without dead ends: 8285 [2020-10-12 14:41:12,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=478, Invalid=782, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 14:41:12,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8285 states. [2020-10-12 14:41:13,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8285 to 7194. [2020-10-12 14:41:13,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7194 states. [2020-10-12 14:41:13,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 9172 transitions. [2020-10-12 14:41:13,052 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 9172 transitions. Word has length 210 [2020-10-12 14:41:13,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:41:13,053 INFO L479 AbstractCegarLoop]: Abstraction has 7194 states and 9172 transitions. [2020-10-12 14:41:13,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 14:41:13,053 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 9172 transitions. [2020-10-12 14:41:13,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-12 14:41:13,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:41:13,058 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:41:13,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:41:13,059 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:41:13,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:41:13,059 INFO L82 PathProgramCache]: Analyzing trace with hash 858629378, now seen corresponding path program 1 times [2020-10-12 14:41:13,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:41:13,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010570960] [2020-10-12 14:41:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:41:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:13,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:13,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:13,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:15,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:18,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:18,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-12 14:41:18,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:41:18,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 14:41:18,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:18,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 14:41:18,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:41:18,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-12 14:41:18,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:18,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:41:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:18,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:18,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:18,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:41:18,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:18,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:41:18,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:41:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:18,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:41:18,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:41:18,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:41:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:18,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:18,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:18,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 14:41:18,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:41:18,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-12 14:41:18,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:18,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-12 14:41:18,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:18,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 14:41:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:19,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:19,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:41:19,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:19,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 14:41:19,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:19,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:19,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:41:19,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:19,335 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 14:41:19,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010570960] [2020-10-12 14:41:19,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:41:19,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 14:41:19,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955064475] [2020-10-12 14:41:19,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:41:19,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:41:19,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:41:19,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:41:19,346 INFO L87 Difference]: Start difference. First operand 7194 states and 9172 transitions. Second operand 9 states. [2020-10-12 14:41:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:41:48,119 INFO L93 Difference]: Finished difference Result 16428 states and 22455 transitions. [2020-10-12 14:41:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 14:41:48,122 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 223 [2020-10-12 14:41:48,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:41:48,154 INFO L225 Difference]: With dead ends: 16428 [2020-10-12 14:41:48,154 INFO L226 Difference]: Without dead ends: 9675 [2020-10-12 14:41:48,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-12 14:41:48,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9675 states. [2020-10-12 14:41:48,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9675 to 8201. [2020-10-12 14:41:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8201 states. [2020-10-12 14:41:48,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 10048 transitions. [2020-10-12 14:41:48,358 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 10048 transitions. Word has length 223 [2020-10-12 14:41:48,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:41:48,358 INFO L479 AbstractCegarLoop]: Abstraction has 8201 states and 10048 transitions. [2020-10-12 14:41:48,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:41:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 10048 transitions. [2020-10-12 14:41:48,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-12 14:41:48,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:41:48,368 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:41:48,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:41:48,369 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:41:48,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:41:48,369 INFO L82 PathProgramCache]: Analyzing trace with hash 401486842, now seen corresponding path program 1 times [2020-10-12 14:41:48,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:41:48,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016225805] [2020-10-12 14:41:48,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:41:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:48,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:48,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:49,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:49,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-12 14:41:49,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:41:49,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1373 [2020-10-12 14:41:49,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-12 14:41:49,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 14:41:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:49,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:41:49,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:49,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:49,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:41:49,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:41:49,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:49,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:50,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:41:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:50,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:50,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:50,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 14:41:50,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:50,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 14:41:50,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:50,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:41:50,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:50,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:41:50,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:50,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 14:41:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:50,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:50,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:50,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 14:41:50,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:50,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 14:41:50,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:41:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:41:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:41:50,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:50,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-12 14:41:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:41:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:41:50,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:41:50,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 14:41:50,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:41:50,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-12 14:41:50,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:41:50,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:41:50,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:41:50,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 14:41:50,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:41:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-12 14:41:50,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016225805] [2020-10-12 14:41:50,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:41:50,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:41:50,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090551789] [2020-10-12 14:41:50,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:41:50,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:41:50,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:41:50,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:41:50,465 INFO L87 Difference]: Start difference. First operand 8201 states and 10048 transitions. Second operand 7 states.