/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:29:59,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:29:59,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:29:59,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:29:59,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:29:59,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:29:59,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:29:59,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:29:59,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:29:59,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:29:59,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:29:59,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:29:59,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:29:59,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:29:59,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:29:59,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:29:59,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:29:59,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:29:59,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:29:59,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:29:59,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:29:59,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:29:59,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:29:59,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:29:59,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:29:59,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:29:59,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:29:59,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:29:59,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:29:59,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:29:59,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:29:59,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:29:59,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:29:59,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:29:59,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:29:59,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:29:59,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:29:59,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:29:59,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:29:59,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:29:59,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:29:59,238 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:29:59,285 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:29:59,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:29:59,288 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:29:59,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:29:59,288 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:29:59,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:29:59,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:29:59,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:29:59,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:29:59,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:29:59,291 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:29:59,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:29:59,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:29:59,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:29:59,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:29:59,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:29:59,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:29:59,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:29:59,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:29:59,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:29:59,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:29:59,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:29:59,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:29:59,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:29:59,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:29:59,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:29:59,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:29:59,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:29:59,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:29:59,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:29:59,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:29:59,767 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:29:59,771 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:29:59,774 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:29:59,774 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:29:59,776 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-24 19:29:59,871 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1937d84d8/8b1192f4b69b429b89882768cd204874/FLAG2621530d3 [2020-09-24 19:30:00,510 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:30:00,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-09-24 19:30:00,530 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1937d84d8/8b1192f4b69b429b89882768cd204874/FLAG2621530d3 [2020-09-24 19:30:00,745 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1937d84d8/8b1192f4b69b429b89882768cd204874 [2020-09-24 19:30:00,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:30:00,764 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:30:00,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:00,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:30:00,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:30:00,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:00" (1/1) ... [2020-09-24 19:30:00,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d85ba32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:00, skipping insertion in model container [2020-09-24 19:30:00,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:30:00" (1/1) ... [2020-09-24 19:30:00,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:30:00,841 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:30:01,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:01,311 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:30:01,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:30:01,553 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:30:01,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01 WrapperNode [2020-09-24 19:30:01,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:30:01,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:30:01,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:30:01,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:30:01,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... [2020-09-24 19:30:01,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:30:01,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:30:01,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:30:01,673 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:30:01,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:30:01,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:30:01,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:30:01,777 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:30:01,777 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:30:01,777 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:30:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:30:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:30:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:30:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:30:01,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:30:01,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:30:03,410 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:30:03,410 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:30:03,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:03 BoogieIcfgContainer [2020-09-24 19:30:03,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:30:03,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:30:03,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:30:03,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:30:03,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:30:00" (1/3) ... [2020-09-24 19:30:03,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fd4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:03, skipping insertion in model container [2020-09-24 19:30:03,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:30:01" (2/3) ... [2020-09-24 19:30:03,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69fd4e84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:30:03, skipping insertion in model container [2020-09-24 19:30:03,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:30:03" (3/3) ... [2020-09-24 19:30:03,431 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-09-24 19:30:03,446 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:30:03,459 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:30:03,486 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:30:03,526 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:30:03,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:30:03,527 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:30:03,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:30:03,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:30:03,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:30:03,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:30:03,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:30:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 19:30:03,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 19:30:03,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:03,581 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:03,581 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:03,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:03,590 INFO L82 PathProgramCache]: Analyzing trace with hash 2145887279, now seen corresponding path program 1 times [2020-09-24 19:30:03,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:03,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856127885] [2020-09-24 19:30:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:03,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:04,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:04,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:04,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:30:04,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:30:04,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 837 [2020-09-24 19:30:04,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 19:30:04,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 19:30:04,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:30:04,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:04,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:04,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:04,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:04,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:04,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:30:04,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:04,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:04,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 19:30:04,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:04,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856127885] [2020-09-24 19:30:04,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:04,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:30:04,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112766533] [2020-09-24 19:30:04,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:30:04,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:04,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:30:04,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:30:04,903 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 19:30:06,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:06,913 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-24 19:30:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:30:06,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-09-24 19:30:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:06,940 INFO L225 Difference]: With dead ends: 1069 [2020-09-24 19:30:06,940 INFO L226 Difference]: Without dead ends: 555 [2020-09-24 19:30:06,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:06,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-24 19:30:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-24 19:30:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-24 19:30:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-24 19:30:07,056 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 76 [2020-09-24 19:30:07,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:07,058 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-24 19:30:07,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:30:07,058 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-24 19:30:07,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 19:30:07,067 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:07,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:30:07,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:30:07,068 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:07,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:07,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1884656088, now seen corresponding path program 1 times [2020-09-24 19:30:07,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:07,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489532582] [2020-09-24 19:30:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:07,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:07,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:07,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:07,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:08,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:08,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 19:30:08,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:30:08,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:30:08,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:08,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:30:08,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 19:30:08,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:08,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:08,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:08,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:08,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:08,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:08,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:08,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:30:08,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:08,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:08,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:08,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:08,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:08,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:08,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:08,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 19:30:08,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:08,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 19:30:08,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:08,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:08,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:30:08,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:08,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489532582] [2020-09-24 19:30:08,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:08,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:08,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086606831] [2020-09-24 19:30:08,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:08,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:08,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:08,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:08,389 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 5 states. [2020-09-24 19:30:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:10,455 INFO L93 Difference]: Finished difference Result 1419 states and 1830 transitions. [2020-09-24 19:30:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:10,456 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-24 19:30:10,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:10,467 INFO L225 Difference]: With dead ends: 1419 [2020-09-24 19:30:10,467 INFO L226 Difference]: Without dead ends: 891 [2020-09-24 19:30:10,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-09-24 19:30:10,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 850. [2020-09-24 19:30:10,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-09-24 19:30:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1047 transitions. [2020-09-24 19:30:10,546 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1047 transitions. Word has length 156 [2020-09-24 19:30:10,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:10,549 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 1047 transitions. [2020-09-24 19:30:10,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:10,550 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1047 transitions. [2020-09-24 19:30:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-24 19:30:10,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:10,564 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:30:10,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:30:10,564 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:10,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:10,565 INFO L82 PathProgramCache]: Analyzing trace with hash -430892963, now seen corresponding path program 1 times [2020-09-24 19:30:10,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:10,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909653164] [2020-09-24 19:30:10,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:10,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:10,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:11,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:11,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:11,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-24 19:30:11,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-24 19:30:11,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:30:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 19:30:11,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 19:30:11,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:11,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:11,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:11,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:11,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:11,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:11,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:30:11,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:11,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:11,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:11,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:11,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:30:11,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:11,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:11,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:30:11,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:11,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-24 19:30:11,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:30:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:11,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 19:30:11,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:12,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909653164] [2020-09-24 19:30:12,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:12,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:30:12,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641673021] [2020-09-24 19:30:12,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:30:12,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:12,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:30:12,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:12,045 INFO L87 Difference]: Start difference. First operand 850 states and 1047 transitions. Second operand 6 states. [2020-09-24 19:30:14,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:14,948 INFO L93 Difference]: Finished difference Result 2692 states and 3487 transitions. [2020-09-24 19:30:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:30:14,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 165 [2020-09-24 19:30:14,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:15,010 INFO L225 Difference]: With dead ends: 2692 [2020-09-24 19:30:15,010 INFO L226 Difference]: Without dead ends: 1857 [2020-09-24 19:30:15,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:30:15,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-09-24 19:30:15,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1780. [2020-09-24 19:30:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1780 states. [2020-09-24 19:30:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2286 transitions. [2020-09-24 19:30:15,114 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2286 transitions. Word has length 165 [2020-09-24 19:30:15,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:15,116 INFO L479 AbstractCegarLoop]: Abstraction has 1780 states and 2286 transitions. [2020-09-24 19:30:15,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:30:15,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2286 transitions. [2020-09-24 19:30:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-24 19:30:15,121 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:15,121 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:30:15,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:30:15,121 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:15,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:15,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1256012571, now seen corresponding path program 1 times [2020-09-24 19:30:15,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:15,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911023525] [2020-09-24 19:30:15,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:15,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:15,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:15,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:15,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:16,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:16,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-24 19:30:16,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:30:16,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-24 19:30:16,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-24 19:30:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:30:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 19:30:16,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:16,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:16,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:16,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:16,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:16,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:30:16,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:16,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:16,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:16,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:16,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:16,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-24 19:30:16,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:16,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-24 19:30:16,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:16,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:16,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 19:30:16,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:16,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911023525] [2020-09-24 19:30:16,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:16,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:30:16,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664577790] [2020-09-24 19:30:16,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:30:16,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:16,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:30:16,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:30:16,538 INFO L87 Difference]: Start difference. First operand 1780 states and 2286 transitions. Second operand 5 states. [2020-09-24 19:30:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:18,432 INFO L93 Difference]: Finished difference Result 4173 states and 5519 transitions. [2020-09-24 19:30:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:30:18,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-24 19:30:18,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:18,448 INFO L225 Difference]: With dead ends: 4173 [2020-09-24 19:30:18,449 INFO L226 Difference]: Without dead ends: 2408 [2020-09-24 19:30:18,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:18,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2408 states. [2020-09-24 19:30:18,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2408 to 2388. [2020-09-24 19:30:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2020-09-24 19:30:18,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3019 transitions. [2020-09-24 19:30:18,610 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3019 transitions. Word has length 167 [2020-09-24 19:30:18,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:18,611 INFO L479 AbstractCegarLoop]: Abstraction has 2388 states and 3019 transitions. [2020-09-24 19:30:18,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:30:18,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3019 transitions. [2020-09-24 19:30:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-24 19:30:18,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:18,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:30:18,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:30:18,617 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:18,618 INFO L82 PathProgramCache]: Analyzing trace with hash 567290395, now seen corresponding path program 1 times [2020-09-24 19:30:18,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:18,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358494215] [2020-09-24 19:30:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:18,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:18,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:19,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:19,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-24 19:30:19,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:19,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-09-24 19:30:19,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:19,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:30:19,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 19:30:19,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 19:30:19,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:19,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:19,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:19,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:19,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:19,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:19,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:30:19,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:19,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:19,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:19,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 19:30:19,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:19,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:19,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:20,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:20,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:30:20,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:20,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-24 19:30:20,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:30:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:30:20,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358494215] [2020-09-24 19:30:20,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:30:20,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 19:30:20,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619530890] [2020-09-24 19:30:20,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:30:20,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:20,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:30:20,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:30:20,162 INFO L87 Difference]: Start difference. First operand 2388 states and 3019 transitions. Second operand 8 states. [2020-09-24 19:30:23,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:23,351 INFO L93 Difference]: Finished difference Result 7112 states and 9581 transitions. [2020-09-24 19:30:23,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 19:30:23,356 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-09-24 19:30:23,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:23,383 INFO L225 Difference]: With dead ends: 7112 [2020-09-24 19:30:23,383 INFO L226 Difference]: Without dead ends: 4739 [2020-09-24 19:30:23,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-09-24 19:30:23,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4739 states. [2020-09-24 19:30:23,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4739 to 3937. [2020-09-24 19:30:23,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3937 states. [2020-09-24 19:30:23,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3937 states to 3937 states and 5112 transitions. [2020-09-24 19:30:23,522 INFO L78 Accepts]: Start accepts. Automaton has 3937 states and 5112 transitions. Word has length 168 [2020-09-24 19:30:23,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:23,522 INFO L479 AbstractCegarLoop]: Abstraction has 3937 states and 5112 transitions. [2020-09-24 19:30:23,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:30:23,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3937 states and 5112 transitions. [2020-09-24 19:30:23,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-24 19:30:23,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:23,532 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:23,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:30:23,532 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:23,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:23,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1938914842, now seen corresponding path program 1 times [2020-09-24 19:30:23,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:23,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058531683] [2020-09-24 19:30:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:23,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:23,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:23,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:24,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:24,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-24 19:30:24,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:24,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:30:24,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:24,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:24,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-24 19:30:24,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 19:30:24,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:24,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:24,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:24,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:24,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:24,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:30:24,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:24,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:24,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:24,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:24,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 19:30:24,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:24,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 19:30:24,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:24,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:24,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 19:30:24,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:24,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 19:30:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:24,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:25,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:25,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 19:30:25,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:25,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-24 19:30:25,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:25,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:25,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:25,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 19:30:25,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:25,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058531683] [2020-09-24 19:30:25,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:25,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:25,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102403739] [2020-09-24 19:30:25,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:25,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:25,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:25,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:25,223 INFO L87 Difference]: Start difference. First operand 3937 states and 5112 transitions. Second operand 7 states. [2020-09-24 19:30:27,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:27,537 INFO L93 Difference]: Finished difference Result 7987 states and 10525 transitions. [2020-09-24 19:30:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:30:27,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-09-24 19:30:27,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:27,554 INFO L225 Difference]: With dead ends: 7987 [2020-09-24 19:30:27,554 INFO L226 Difference]: Without dead ends: 3275 [2020-09-24 19:30:27,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:30:27,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2020-09-24 19:30:27,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 2561. [2020-09-24 19:30:27,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2561 states. [2020-09-24 19:30:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2561 states to 2561 states and 3005 transitions. [2020-09-24 19:30:27,691 INFO L78 Accepts]: Start accepts. Automaton has 2561 states and 3005 transitions. Word has length 248 [2020-09-24 19:30:27,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:27,691 INFO L479 AbstractCegarLoop]: Abstraction has 2561 states and 3005 transitions. [2020-09-24 19:30:27,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:27,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2561 states and 3005 transitions. [2020-09-24 19:30:27,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-24 19:30:27,706 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:27,707 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:27,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:30:27,708 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:27,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:27,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1072730049, now seen corresponding path program 1 times [2020-09-24 19:30:27,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:27,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645516173] [2020-09-24 19:30:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:27,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:27,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:28,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:28,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-24 19:30:28,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:28,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:30:28,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:30:28,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-24 19:30:28,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:28,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:28,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:28,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:28,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:28,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:28,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:30:28,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:28,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:28,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:28,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:28,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:28,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:28,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:28,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:28,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:28,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:28,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 19:30:28,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:28,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:28,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:28,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:30:28,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:29,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:30:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:29,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:29,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:29,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 19:30:29,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:29,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-24 19:30:29,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:29,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:29,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:29,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 19:30:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:29,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645516173] [2020-09-24 19:30:29,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:29,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:29,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069441237] [2020-09-24 19:30:29,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:29,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:29,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:29,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:29,490 INFO L87 Difference]: Start difference. First operand 2561 states and 3005 transitions. Second operand 7 states. [2020-09-24 19:30:31,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:31,661 INFO L93 Difference]: Finished difference Result 5603 states and 6670 transitions. [2020-09-24 19:30:31,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:30:31,662 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-09-24 19:30:31,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:31,677 INFO L225 Difference]: With dead ends: 5603 [2020-09-24 19:30:31,677 INFO L226 Difference]: Without dead ends: 3057 [2020-09-24 19:30:31,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2020-09-24 19:30:31,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2873. [2020-09-24 19:30:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2020-09-24 19:30:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 3415 transitions. [2020-09-24 19:30:31,765 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 3415 transitions. Word has length 263 [2020-09-24 19:30:31,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:31,766 INFO L479 AbstractCegarLoop]: Abstraction has 2873 states and 3415 transitions. [2020-09-24 19:30:31,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:31,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 3415 transitions. [2020-09-24 19:30:31,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-09-24 19:30:31,775 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:31,775 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:31,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:30:31,776 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:31,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:31,776 INFO L82 PathProgramCache]: Analyzing trace with hash 2042909464, now seen corresponding path program 1 times [2020-09-24 19:30:31,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:31,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466736124] [2020-09-24 19:30:31,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:31,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:31,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:32,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:32,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:32,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-24 19:30:32,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:32,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1044 [2020-09-24 19:30:32,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:32,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:32,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-24 19:30:32,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 19:30:32,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:32,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:32,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:32,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:32,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:32,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 19:30:32,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:32,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:32,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:33,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:33,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:33,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 19:30:33,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:33,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-24 19:30:33,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:33,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:33,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:33,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-24 19:30:33,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:33,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:30:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:33,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:33,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:33,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 19:30:33,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:33,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-24 19:30:33,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:33,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 19:30:33,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:33,492 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:33,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466736124] [2020-09-24 19:30:33,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:33,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:33,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986761833] [2020-09-24 19:30:33,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:33,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:33,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:33,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:33,495 INFO L87 Difference]: Start difference. First operand 2873 states and 3415 transitions. Second operand 7 states. [2020-09-24 19:30:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:35,873 INFO L93 Difference]: Finished difference Result 6408 states and 7720 transitions. [2020-09-24 19:30:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 19:30:35,874 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 264 [2020-09-24 19:30:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:35,888 INFO L225 Difference]: With dead ends: 6408 [2020-09-24 19:30:35,888 INFO L226 Difference]: Without dead ends: 3550 [2020-09-24 19:30:35,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:30:35,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2020-09-24 19:30:35,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3370. [2020-09-24 19:30:35,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3370 states. [2020-09-24 19:30:35,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3370 states to 3370 states and 3985 transitions. [2020-09-24 19:30:35,976 INFO L78 Accepts]: Start accepts. Automaton has 3370 states and 3985 transitions. Word has length 264 [2020-09-24 19:30:35,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:35,976 INFO L479 AbstractCegarLoop]: Abstraction has 3370 states and 3985 transitions. [2020-09-24 19:30:35,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 3370 states and 3985 transitions. [2020-09-24 19:30:35,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-09-24 19:30:35,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:35,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:35,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:30:35,987 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:35,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:35,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1662033322, now seen corresponding path program 1 times [2020-09-24 19:30:35,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:35,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828499636] [2020-09-24 19:30:35,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:36,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:36,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:37,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:37,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-09-24 19:30:37,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:37,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:30:37,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 213 [2020-09-24 19:30:37,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 19:30:37,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:30:37,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:37,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:37,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:37,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:37,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:37,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:30:37,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:37,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:37,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:37,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:37,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:37,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:37,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:30:37,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:37,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:30:37,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:37,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:37,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:37,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:30:37,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:37,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:37,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:37,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-24 19:30:37,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:37,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 19:30:37,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:37,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:37,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 19:30:37,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-24 19:30:37,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828499636] [2020-09-24 19:30:37,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:37,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 19:30:37,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598229536] [2020-09-24 19:30:37,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 19:30:37,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:37,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 19:30:37,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:30:37,529 INFO L87 Difference]: Start difference. First operand 3370 states and 3985 transitions. Second operand 6 states. [2020-09-24 19:30:39,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:39,596 INFO L93 Difference]: Finished difference Result 3534 states and 4158 transitions. [2020-09-24 19:30:39,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 19:30:39,602 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 270 [2020-09-24 19:30:39,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:39,616 INFO L225 Difference]: With dead ends: 3534 [2020-09-24 19:30:39,616 INFO L226 Difference]: Without dead ends: 3352 [2020-09-24 19:30:39,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:30:39,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3352 states. [2020-09-24 19:30:39,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3352 to 3342. [2020-09-24 19:30:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3342 states. [2020-09-24 19:30:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3342 states to 3342 states and 3932 transitions. [2020-09-24 19:30:39,704 INFO L78 Accepts]: Start accepts. Automaton has 3342 states and 3932 transitions. Word has length 270 [2020-09-24 19:30:39,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:39,705 INFO L479 AbstractCegarLoop]: Abstraction has 3342 states and 3932 transitions. [2020-09-24 19:30:39,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 19:30:39,705 INFO L276 IsEmpty]: Start isEmpty. Operand 3342 states and 3932 transitions. [2020-09-24 19:30:39,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-09-24 19:30:39,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:39,718 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:39,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:30:39,718 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:39,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:39,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1621106646, now seen corresponding path program 1 times [2020-09-24 19:30:39,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:39,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387567627] [2020-09-24 19:30:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:39,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:40,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:40,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:40,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-09-24 19:30:40,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:40,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-09-24 19:30:40,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:40,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-24 19:30:40,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-24 19:30:40,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:40,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:40,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:40,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:40,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:40,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:40,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:30:40,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:40,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:40,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:40,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:40,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:40,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:41,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:41,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 19:30:41,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:41,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 19:30:41,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:41,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 19:30:41,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:41,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 19:30:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:41,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:41,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:41,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 19:30:41,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-24 19:30:41,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:41,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 19:30:41,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:41,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387567627] [2020-09-24 19:30:41,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:41,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:41,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910064494] [2020-09-24 19:30:41,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:41,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:41,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:41,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:41,528 INFO L87 Difference]: Start difference. First operand 3342 states and 3932 transitions. Second operand 7 states. [2020-09-24 19:30:43,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:43,828 INFO L93 Difference]: Finished difference Result 7625 states and 9215 transitions. [2020-09-24 19:30:43,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:30:43,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-09-24 19:30:43,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:43,847 INFO L225 Difference]: With dead ends: 7625 [2020-09-24 19:30:43,847 INFO L226 Difference]: Without dead ends: 4136 [2020-09-24 19:30:43,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:30:43,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4136 states. [2020-09-24 19:30:43,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4136 to 3942. [2020-09-24 19:30:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3942 states. [2020-09-24 19:30:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 4569 transitions. [2020-09-24 19:30:43,951 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 4569 transitions. Word has length 301 [2020-09-24 19:30:43,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:43,952 INFO L479 AbstractCegarLoop]: Abstraction has 3942 states and 4569 transitions. [2020-09-24 19:30:43,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:43,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 4569 transitions. [2020-09-24 19:30:43,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-09-24 19:30:43,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:43,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:43,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:30:43,967 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:43,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:43,968 INFO L82 PathProgramCache]: Analyzing trace with hash -796206148, now seen corresponding path program 1 times [2020-09-24 19:30:43,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:43,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423266359] [2020-09-24 19:30:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:44,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:44,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:44,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:45,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:45,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-09-24 19:30:45,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:30:45,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-09-24 19:30:45,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:45,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-24 19:30:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-24 19:30:45,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:45,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:45,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:45,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:45,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:45,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 19:30:45,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:45,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:45,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:45,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:30:45,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:45,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:45,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:45,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-24 19:30:45,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 19:30:45,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:45,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 19:30:45,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:45,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-24 19:30:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:45,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:45,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:45,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 19:30:45,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:45,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-09-24 19:30:45,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:45,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-24 19:30:45,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:30:45,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423266359] [2020-09-24 19:30:45,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:30:45,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:30:45,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687148067] [2020-09-24 19:30:45,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:30:45,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:30:45,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:30:45,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:30:45,989 INFO L87 Difference]: Start difference. First operand 3942 states and 4569 transitions. Second operand 7 states. [2020-09-24 19:30:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:30:47,865 INFO L93 Difference]: Finished difference Result 8067 states and 9364 transitions. [2020-09-24 19:30:47,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:30:47,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-09-24 19:30:47,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:30:47,885 INFO L225 Difference]: With dead ends: 8067 [2020-09-24 19:30:47,886 INFO L226 Difference]: Without dead ends: 4140 [2020-09-24 19:30:47,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:30:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2020-09-24 19:30:47,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 4094. [2020-09-24 19:30:47,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4094 states. [2020-09-24 19:30:47,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4094 states to 4094 states and 4662 transitions. [2020-09-24 19:30:47,975 INFO L78 Accepts]: Start accepts. Automaton has 4094 states and 4662 transitions. Word has length 313 [2020-09-24 19:30:47,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:30:47,976 INFO L479 AbstractCegarLoop]: Abstraction has 4094 states and 4662 transitions. [2020-09-24 19:30:47,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:30:47,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4094 states and 4662 transitions. [2020-09-24 19:30:47,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-09-24 19:30:47,991 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:30:47,991 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:30:47,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 19:30:47,991 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:30:47,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:30:47,992 INFO L82 PathProgramCache]: Analyzing trace with hash 2000455882, now seen corresponding path program 1 times [2020-09-24 19:30:47,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:30:47,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006767915] [2020-09-24 19:30:47,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:30:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:48,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:48,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:48,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:49,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:49,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-09-24 19:30:49,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:30:49,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-09-24 19:30:49,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-09-24 19:30:49,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-24 19:30:49,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:49,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:30:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:49,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:49,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:49,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:30:49,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:49,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 19:30:49,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:30:49,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:49,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:30:49,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:49,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 19:30:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:49,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:49,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 19:30:49,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:49,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 19:30:49,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:30:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:30:49,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 19:30:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:30:49,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 19:30:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:30:49,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:30:49,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:30:49,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 19:30:49,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:30:49,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-24 19:30:49,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:30:49,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:30:49,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:30:49,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-24 19:30:49,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0