/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 19:10:57,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 19:10:57,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 19:10:57,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 19:10:57,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 19:10:57,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 19:10:57,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 19:10:57,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 19:10:57,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 19:10:57,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 19:10:57,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 19:10:57,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 19:10:57,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 19:10:57,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 19:10:57,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 19:10:57,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 19:10:57,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 19:10:57,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 19:10:57,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 19:10:57,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 19:10:57,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 19:10:57,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 19:10:57,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 19:10:57,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 19:10:57,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 19:10:57,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 19:10:57,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 19:10:57,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 19:10:57,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 19:10:57,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 19:10:57,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 19:10:57,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 19:10:57,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 19:10:57,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 19:10:57,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 19:10:57,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 19:10:57,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 19:10:57,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 19:10:57,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 19:10:57,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 19:10:57,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 19:10:57,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 19:10:57,276 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 19:10:57,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 19:10:57,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 19:10:57,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 19:10:57,279 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 19:10:57,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 19:10:57,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 19:10:57,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 19:10:57,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 19:10:57,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 19:10:57,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 19:10:57,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 19:10:57,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 19:10:57,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 19:10:57,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 19:10:57,282 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 19:10:57,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 19:10:57,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 19:10:57,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 19:10:57,283 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 19:10:57,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 19:10:57,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:10:57,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 19:10:57,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 19:10:57,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 19:10:57,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 19:10:57,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 19:10:57,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 19:10:57,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 19:10:57,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 19:10:57,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 19:10:57,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 19:10:57,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 19:10:57,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 19:10:57,609 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 19:10:57,609 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label19.c [2020-10-14 19:10:57,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/850fd4834/a8b27edfb77b41b997fbbd867435c993/FLAG034187e30 [2020-10-14 19:10:58,301 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 19:10:58,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label19.c [2020-10-14 19:10:58,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/850fd4834/a8b27edfb77b41b997fbbd867435c993/FLAG034187e30 [2020-10-14 19:10:58,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/850fd4834/a8b27edfb77b41b997fbbd867435c993 [2020-10-14 19:10:58,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 19:10:58,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 19:10:58,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 19:10:58,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 19:10:58,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 19:10:58,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:10:58" (1/1) ... [2020-10-14 19:10:58,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522d3de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:58, skipping insertion in model container [2020-10-14 19:10:58,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:10:58" (1/1) ... [2020-10-14 19:10:58,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 19:10:58,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 19:10:59,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:10:59,499 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 19:10:59,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 19:10:59,877 INFO L208 MainTranslator]: Completed translation [2020-10-14 19:10:59,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:59 WrapperNode [2020-10-14 19:10:59,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 19:10:59,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 19:10:59,880 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 19:10:59,880 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 19:10:59,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:59" (1/1) ... [2020-10-14 19:10:59,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:59" (1/1) ... [2020-10-14 19:10:59,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:59" (1/1) ... [2020-10-14 19:10:59,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:59" (1/1) ... [2020-10-14 19:11:00,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:59" (1/1) ... [2020-10-14 19:11:00,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:59" (1/1) ... [2020-10-14 19:11:00,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:59" (1/1) ... [2020-10-14 19:11:00,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 19:11:00,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 19:11:00,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 19:11:00,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 19:11:00,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 19:11:00,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 19:11:00,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 19:11:00,116 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 19:11:00,116 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 19:11:00,116 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 19:11:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 19:11:00,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 19:11:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 19:11:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 19:11:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 19:11:00,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 19:11:02,059 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 19:11:02,060 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 19:11:02,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:11:02 BoogieIcfgContainer [2020-10-14 19:11:02,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 19:11:02,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 19:11:02,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 19:11:02,080 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 19:11:02,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:10:58" (1/3) ... [2020-10-14 19:11:02,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdecacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:11:02, skipping insertion in model container [2020-10-14 19:11:02,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:10:59" (2/3) ... [2020-10-14 19:11:02,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdecacb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:11:02, skipping insertion in model container [2020-10-14 19:11:02,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:11:02" (3/3) ... [2020-10-14 19:11:02,085 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label19.c [2020-10-14 19:11:02,096 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 19:11:02,110 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 19:11:02,124 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 19:11:02,159 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 19:11:02,160 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 19:11:02,160 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 19:11:02,160 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 19:11:02,160 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 19:11:02,161 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 19:11:02,161 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 19:11:02,161 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 19:11:02,198 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 19:11:02,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-14 19:11:02,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:02,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:02,237 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:02,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1120905288, now seen corresponding path program 1 times [2020-10-14 19:11:02,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:02,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043574807] [2020-10-14 19:11:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:03,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:06,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:06,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 19:11:06,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:11:06,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4048 [2020-10-14 19:11:06,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:06,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:11:06,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:11:06,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-14 19:11:06,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 19:11:07,195 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:07,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:07,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:07,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:07,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:07,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 19:11:07,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:07,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:07,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:07,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:07,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:11:07,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:11:07,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043574807] [2020-10-14 19:11:07,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:11:07,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 19:11:07,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482014408] [2020-10-14 19:11:07,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:11:07,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:07,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:11:07,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:11:07,427 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2020-10-14 19:11:07,608 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:08,084 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:11:11,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:11,428 INFO L93 Difference]: Finished difference Result 1121 states and 2001 transitions. [2020-10-14 19:11:11,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:11:11,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2020-10-14 19:11:11,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:11,466 INFO L225 Difference]: With dead ends: 1121 [2020-10-14 19:11:11,466 INFO L226 Difference]: Without dead ends: 712 [2020-10-14 19:11:11,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:11:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2020-10-14 19:11:11,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 469. [2020-10-14 19:11:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2020-10-14 19:11:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 753 transitions. [2020-10-14 19:11:11,640 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 753 transitions. Word has length 193 [2020-10-14 19:11:11,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:11,646 INFO L479 AbstractCegarLoop]: Abstraction has 469 states and 753 transitions. [2020-10-14 19:11:11,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:11:11,647 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 753 transitions. [2020-10-14 19:11:11,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-14 19:11:11,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:11,659 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:11,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 19:11:11,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:11,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:11,660 INFO L82 PathProgramCache]: Analyzing trace with hash 353254539, now seen corresponding path program 1 times [2020-10-14 19:11:11,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:11,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267323558] [2020-10-14 19:11:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:12,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:13,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:13,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:14,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:14,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-14 19:11:14,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:11:14,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3124 [2020-10-14 19:11:14,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:14,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-14 19:11:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-14 19:11:14,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:11:15,169 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:15,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:15,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:15,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:15,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:15,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:15,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:11:15,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:15,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:15,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:15,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:15,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:15,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:15,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:15,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 19:11:15,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:15,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 19:11:15,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:15,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:15,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 19:11:15,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:11:15,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267323558] [2020-10-14 19:11:15,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:15,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:11:15,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030124976] [2020-10-14 19:11:15,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:11:15,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:15,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:11:15,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:11:15,370 INFO L87 Difference]: Start difference. First operand 469 states and 753 transitions. Second operand 5 states. [2020-10-14 19:11:15,611 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:18,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:18,291 INFO L93 Difference]: Finished difference Result 1363 states and 2223 transitions. [2020-10-14 19:11:18,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:11:18,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2020-10-14 19:11:18,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:18,308 INFO L225 Difference]: With dead ends: 1363 [2020-10-14 19:11:18,308 INFO L226 Difference]: Without dead ends: 900 [2020-10-14 19:11:18,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:11:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2020-10-14 19:11:18,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 891. [2020-10-14 19:11:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-10-14 19:11:18,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1373 transitions. [2020-10-14 19:11:18,371 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1373 transitions. Word has length 202 [2020-10-14 19:11:18,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:18,373 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1373 transitions. [2020-10-14 19:11:18,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:11:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1373 transitions. [2020-10-14 19:11:18,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-14 19:11:18,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:18,379 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:18,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 19:11:18,379 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:18,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:18,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1266804847, now seen corresponding path program 1 times [2020-10-14 19:11:18,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:18,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307115554] [2020-10-14 19:11:18,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:18,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:19,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:20,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:21,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:21,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-14 19:11:21,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:11:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2873 [2020-10-14 19:11:21,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:21,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 19:11:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 19:11:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:21,567 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:21,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:21,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:21,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:21,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:21,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 19:11:21,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:21,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:21,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:21,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:21,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:21,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:21,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:21,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:21,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:21,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:11:21,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:21,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 19:11:21,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:21,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:21,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:21,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:11:21,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 19:11:21,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:11:21,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307115554] [2020-10-14 19:11:21,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:21,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:11:21,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051171922] [2020-10-14 19:11:21,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:11:21,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:21,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:11:21,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:11:21,873 INFO L87 Difference]: Start difference. First operand 891 states and 1373 transitions. Second operand 5 states. [2020-10-14 19:11:22,127 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:25,217 INFO L93 Difference]: Finished difference Result 2620 states and 4109 transitions. [2020-10-14 19:11:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:11:25,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-14 19:11:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:25,232 INFO L225 Difference]: With dead ends: 2620 [2020-10-14 19:11:25,232 INFO L226 Difference]: Without dead ends: 1735 [2020-10-14 19:11:25,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:11:25,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2020-10-14 19:11:25,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1729. [2020-10-14 19:11:25,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1729 states. [2020-10-14 19:11:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 2624 transitions. [2020-10-14 19:11:25,305 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 2624 transitions. Word has length 203 [2020-10-14 19:11:25,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:25,306 INFO L479 AbstractCegarLoop]: Abstraction has 1729 states and 2624 transitions. [2020-10-14 19:11:25,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:11:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 2624 transitions. [2020-10-14 19:11:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-14 19:11:25,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:25,313 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:25,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 19:11:25,313 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:25,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:25,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1584849895, now seen corresponding path program 1 times [2020-10-14 19:11:25,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:25,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277727607] [2020-10-14 19:11:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:25,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:25,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:27,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:28,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:28,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-14 19:11:28,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:11:28,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2840 [2020-10-14 19:11:28,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:28,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:28,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 19:11:28,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-14 19:11:28,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:28,465 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:28,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:28,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:28,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:28,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:28,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:28,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:11:28,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:28,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:28,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:28,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:28,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:28,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:28,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:28,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:28,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:28,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:11:28,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:28,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 19:11:28,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:28,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:28,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 19:11:28,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:11:28,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277727607] [2020-10-14 19:11:28,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:28,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 19:11:28,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757858190] [2020-10-14 19:11:28,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 19:11:28,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:28,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 19:11:28,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 19:11:28,706 INFO L87 Difference]: Start difference. First operand 1729 states and 2624 transitions. Second operand 5 states. [2020-10-14 19:11:28,840 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:31,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:31,202 INFO L93 Difference]: Finished difference Result 4294 states and 6669 transitions. [2020-10-14 19:11:31,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 19:11:31,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-14 19:11:31,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:31,221 INFO L225 Difference]: With dead ends: 4294 [2020-10-14 19:11:31,221 INFO L226 Difference]: Without dead ends: 2571 [2020-10-14 19:11:31,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 19:11:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2020-10-14 19:11:31,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2565. [2020-10-14 19:11:31,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2565 states. [2020-10-14 19:11:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2565 states to 2565 states and 3937 transitions. [2020-10-14 19:11:31,317 INFO L78 Accepts]: Start accepts. Automaton has 2565 states and 3937 transitions. Word has length 216 [2020-10-14 19:11:31,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:31,318 INFO L479 AbstractCegarLoop]: Abstraction has 2565 states and 3937 transitions. [2020-10-14 19:11:31,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 19:11:31,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2565 states and 3937 transitions. [2020-10-14 19:11:31,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-14 19:11:31,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:31,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:31,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 19:11:31,328 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:31,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:31,328 INFO L82 PathProgramCache]: Analyzing trace with hash 350263467, now seen corresponding path program 1 times [2020-10-14 19:11:31,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:31,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942185773] [2020-10-14 19:11:31,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:31,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:32,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:32,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-14 19:11:32,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:32,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1144 [2020-10-14 19:11:32,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:32,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:11:32,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:11:32,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 19:11:32,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:32,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:32,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:32,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:32,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:32,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:32,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 19:11:32,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:32,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:32,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:11:32,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:32,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:32,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:32,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:32,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:32,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:11:32,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:32,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 19:11:32,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:32,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:11:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 19:11:33,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942185773] [2020-10-14 19:11:33,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 19:11:33,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 19:11:33,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957635416] [2020-10-14 19:11:33,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:11:33,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:33,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:11:33,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:11:33,183 INFO L87 Difference]: Start difference. First operand 2565 states and 3937 transitions. Second operand 7 states. [2020-10-14 19:11:33,330 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:11:35,794 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 19:11:36,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:36,510 INFO L93 Difference]: Finished difference Result 6506 states and 10522 transitions. [2020-10-14 19:11:36,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:11:36,511 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-14 19:11:36,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:36,536 INFO L225 Difference]: With dead ends: 6506 [2020-10-14 19:11:36,536 INFO L226 Difference]: Without dead ends: 3947 [2020-10-14 19:11:36,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:11:36,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3947 states. [2020-10-14 19:11:36,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3947 to 3904. [2020-10-14 19:11:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3904 states. [2020-10-14 19:11:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3904 states to 3904 states and 6005 transitions. [2020-10-14 19:11:36,713 INFO L78 Accepts]: Start accepts. Automaton has 3904 states and 6005 transitions. Word has length 225 [2020-10-14 19:11:36,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:36,713 INFO L479 AbstractCegarLoop]: Abstraction has 3904 states and 6005 transitions. [2020-10-14 19:11:36,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:11:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3904 states and 6005 transitions. [2020-10-14 19:11:36,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-14 19:11:36,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:36,732 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:36,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 19:11:36,733 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:36,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1836873967, now seen corresponding path program 1 times [2020-10-14 19:11:36,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:36,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219601856] [2020-10-14 19:11:36,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:36,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:36,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:37,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:37,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:41,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:41,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 19:11:41,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:11:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 19:11:41,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:41,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:11:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:11:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-14 19:11:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:42,186 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:42,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:42,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:42,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:42,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:42,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:42,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:11:42,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:42,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:42,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:42,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:42,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:42,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:42,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:42,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:42,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:11:42,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:42,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:11:42,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:42,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:11:42,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:42,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:11:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:42,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:42,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:42,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 19:11:42,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:42,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 19:11:42,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:42,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:42,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 19:11:42,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:42,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:11:42,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 19:11:43,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219601856] [2020-10-14 19:11:43,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:43,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:11:43,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512278992] [2020-10-14 19:11:43,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:11:43,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:43,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:11:43,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:11:43,071 INFO L87 Difference]: Start difference. First operand 3904 states and 6005 transitions. Second operand 7 states. [2020-10-14 19:11:43,214 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:43,956 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 19:11:46,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:46,085 INFO L93 Difference]: Finished difference Result 7965 states and 12320 transitions. [2020-10-14 19:11:46,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 19:11:46,086 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 242 [2020-10-14 19:11:46,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:46,106 INFO L225 Difference]: With dead ends: 7965 [2020-10-14 19:11:46,107 INFO L226 Difference]: Without dead ends: 4046 [2020-10-14 19:11:46,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:11:46,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2020-10-14 19:11:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 4038. [2020-10-14 19:11:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4038 states. [2020-10-14 19:11:46,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 6149 transitions. [2020-10-14 19:11:46,234 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 6149 transitions. Word has length 242 [2020-10-14 19:11:46,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:46,235 INFO L479 AbstractCegarLoop]: Abstraction has 4038 states and 6149 transitions. [2020-10-14 19:11:46,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:11:46,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 6149 transitions. [2020-10-14 19:11:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-14 19:11:46,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:46,255 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:46,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 19:11:46,255 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:46,256 INFO L82 PathProgramCache]: Analyzing trace with hash -710084856, now seen corresponding path program 1 times [2020-10-14 19:11:46,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:46,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824891180] [2020-10-14 19:11:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:46,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:46,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:46,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:51,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:51,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-14 19:11:51,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:11:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 19:11:51,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:51,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 19:11:51,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 19:11:51,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:11:51,499 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:11:51,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:11:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:51,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:51,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:51,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:11:51,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:51,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:11:51,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:51,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:51,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:51,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:51,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:51,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:51,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:11:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:51,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:51,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:11:51,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:11:51,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:51,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:11:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:51,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:11:51,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:51,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:11:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:51,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:51,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:51,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:11:51,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:51,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:11:51,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:51,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:11:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:11:51,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 19:11:51,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:51,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 19:11:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:51,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:51,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:11:51,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:11:51,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:11:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 19:11:51,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:11:51,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:11:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:11:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:11:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:11:51,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:11:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 19:11:51,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824891180] [2020-10-14 19:11:51,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:11:51,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:11:51,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373280212] [2020-10-14 19:11:51,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:11:51,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:11:51,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:11:51,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:11:51,914 INFO L87 Difference]: Start difference. First operand 4038 states and 6149 transitions. Second operand 7 states. [2020-10-14 19:11:52,056 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-14 19:11:54,376 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:11:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:11:55,649 INFO L93 Difference]: Finished difference Result 11981 states and 21060 transitions. [2020-10-14 19:11:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 19:11:55,649 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 247 [2020-10-14 19:11:55,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:11:55,708 INFO L225 Difference]: With dead ends: 11981 [2020-10-14 19:11:55,708 INFO L226 Difference]: Without dead ends: 7949 [2020-10-14 19:11:55,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:11:55,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7949 states. [2020-10-14 19:11:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7949 to 7731. [2020-10-14 19:11:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7731 states. [2020-10-14 19:11:56,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7731 states to 7731 states and 12237 transitions. [2020-10-14 19:11:56,080 INFO L78 Accepts]: Start accepts. Automaton has 7731 states and 12237 transitions. Word has length 247 [2020-10-14 19:11:56,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:11:56,081 INFO L479 AbstractCegarLoop]: Abstraction has 7731 states and 12237 transitions. [2020-10-14 19:11:56,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:11:56,081 INFO L276 IsEmpty]: Start isEmpty. Operand 7731 states and 12237 transitions. [2020-10-14 19:11:56,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 19:11:56,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:11:56,116 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:11:56,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 19:11:56,116 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:11:56,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:11:56,117 INFO L82 PathProgramCache]: Analyzing trace with hash -208214602, now seen corresponding path program 1 times [2020-10-14 19:11:56,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:11:56,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601375237] [2020-10-14 19:11:56,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:11:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:11:56,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:56,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:57,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:11:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:01,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:01,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-14 19:12:01,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:12:01,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-14 19:12:01,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:01,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:12:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 19:12:01,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-14 19:12:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:01,452 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:01,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:01,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:01,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:01,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:01,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:01,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:12:01,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:01,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:01,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:01,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:01,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:01,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:01,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:01,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:01,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:12:01,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:01,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:12:01,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:01,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:01,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:01,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:01,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 19:12:01,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:01,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:12:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:01,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:01,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:01,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:01,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:12:01,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:12:01,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 19:12:01,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:01,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:01,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 19:12:01,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:01,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 19:12:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:01,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:01,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:01,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:12:01,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:01,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 19:12:01,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:01,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:12:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 49 proven. 41 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-14 19:12:02,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601375237] [2020-10-14 19:12:02,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:02,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:12:02,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602522495] [2020-10-14 19:12:02,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:12:02,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:02,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:12:02,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:12:02,071 INFO L87 Difference]: Start difference. First operand 7731 states and 12237 transitions. Second operand 8 states. [2020-10-14 19:12:02,251 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:02,516 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:12:07,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:07,257 INFO L93 Difference]: Finished difference Result 28823 states and 54729 transitions. [2020-10-14 19:12:07,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:12:07,258 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-10-14 19:12:07,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:07,390 INFO L225 Difference]: With dead ends: 28823 [2020-10-14 19:12:07,390 INFO L226 Difference]: Without dead ends: 21098 [2020-10-14 19:12:07,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:12:07,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21098 states. [2020-10-14 19:12:08,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21098 to 20704. [2020-10-14 19:12:08,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20704 states. [2020-10-14 19:12:08,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20704 states to 20704 states and 32956 transitions. [2020-10-14 19:12:08,362 INFO L78 Accepts]: Start accepts. Automaton has 20704 states and 32956 transitions. Word has length 260 [2020-10-14 19:12:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:08,362 INFO L479 AbstractCegarLoop]: Abstraction has 20704 states and 32956 transitions. [2020-10-14 19:12:08,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:12:08,362 INFO L276 IsEmpty]: Start isEmpty. Operand 20704 states and 32956 transitions. [2020-10-14 19:12:08,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-14 19:12:08,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:08,457 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:08,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 19:12:08,458 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:08,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:08,458 INFO L82 PathProgramCache]: Analyzing trace with hash 366368082, now seen corresponding path program 1 times [2020-10-14 19:12:08,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:08,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272767616] [2020-10-14 19:12:08,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:08,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:08,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:10,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:11,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:12,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:12,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-14 19:12:12,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 19:12:12,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4408 [2020-10-14 19:12:12,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:12,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 19:12:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:12:12,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-14 19:12:12,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:13,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:13,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:13,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:13,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:13,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:13,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 19:12:13,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:13,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:13,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:13,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:12:13,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:13,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:13,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:13,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:13,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:12:13,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:13,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:12:13,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:13,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:13,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 19:12:13,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:13,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 19:12:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:13,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:13,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:13,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:12:13,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 19:12:13,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:13,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:13,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 19:12:13,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:13,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 19:12:13,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:13,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:13,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:12:13,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:13,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 19:12:13,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:13,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:13,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:12:13,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:13,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:12:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 19:12:13,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272767616] [2020-10-14 19:12:13,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:13,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:12:13,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544404920] [2020-10-14 19:12:13,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 19:12:13,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:13,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 19:12:13,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-14 19:12:13,576 INFO L87 Difference]: Start difference. First operand 20704 states and 32956 transitions. Second operand 10 states. [2020-10-14 19:12:13,716 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:13,854 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 19:12:14,223 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:19,325 INFO L93 Difference]: Finished difference Result 65452 states and 115497 transitions. [2020-10-14 19:12:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 19:12:19,326 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 262 [2020-10-14 19:12:19,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:19,634 INFO L225 Difference]: With dead ends: 65452 [2020-10-14 19:12:19,634 INFO L226 Difference]: Without dead ends: 44821 [2020-10-14 19:12:19,715 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2020-10-14 19:12:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44821 states. [2020-10-14 19:12:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44821 to 44121. [2020-10-14 19:12:21,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44121 states. [2020-10-14 19:12:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44121 states to 44121 states and 69006 transitions. [2020-10-14 19:12:23,119 INFO L78 Accepts]: Start accepts. Automaton has 44121 states and 69006 transitions. Word has length 262 [2020-10-14 19:12:23,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:23,120 INFO L479 AbstractCegarLoop]: Abstraction has 44121 states and 69006 transitions. [2020-10-14 19:12:23,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 19:12:23,120 INFO L276 IsEmpty]: Start isEmpty. Operand 44121 states and 69006 transitions. [2020-10-14 19:12:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-14 19:12:23,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:23,319 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:23,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 19:12:23,320 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:23,320 INFO L82 PathProgramCache]: Analyzing trace with hash -683055081, now seen corresponding path program 1 times [2020-10-14 19:12:23,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:23,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799372652] [2020-10-14 19:12:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:23,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:23,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:28,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:28,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-14 19:12:28,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:12:28,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-14 19:12:28,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:28,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:28,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:12:28,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 19:12:28,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 19:12:28,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:28,567 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:12:28,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:28,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:28,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:28,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:28,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:28,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:12:28,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:28,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:28,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:28,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:28,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:28,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:28,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:28,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:12:28,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:28,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:12:28,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:28,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 19:12:28,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:28,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 19:12:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:28,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:28,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:28,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:12:28,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:28,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 19:12:28,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:28,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:28,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 19:12:28,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:28,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 19:12:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:28,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:28,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:28,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:12:28,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:28,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 19:12:28,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:28,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:28,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:28,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:12:28,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:12:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 91 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-14 19:12:29,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799372652] [2020-10-14 19:12:29,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:29,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:12:29,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127517606] [2020-10-14 19:12:29,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 19:12:29,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:29,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 19:12:29,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 19:12:29,063 INFO L87 Difference]: Start difference. First operand 44121 states and 69006 transitions. Second operand 8 states. [2020-10-14 19:12:29,346 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:29,550 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:35,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:35,643 INFO L93 Difference]: Finished difference Result 162383 states and 286417 transitions. [2020-10-14 19:12:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:12:35,644 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 265 [2020-10-14 19:12:35,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:36,460 INFO L225 Difference]: With dead ends: 162383 [2020-10-14 19:12:36,461 INFO L226 Difference]: Without dead ends: 118284 [2020-10-14 19:12:36,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 19:12:36,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118284 states. [2020-10-14 19:12:42,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118284 to 118045. [2020-10-14 19:12:42,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118045 states. [2020-10-14 19:12:43,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118045 states to 118045 states and 210192 transitions. [2020-10-14 19:12:43,482 INFO L78 Accepts]: Start accepts. Automaton has 118045 states and 210192 transitions. Word has length 265 [2020-10-14 19:12:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:43,483 INFO L479 AbstractCegarLoop]: Abstraction has 118045 states and 210192 transitions. [2020-10-14 19:12:43,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 19:12:43,483 INFO L276 IsEmpty]: Start isEmpty. Operand 118045 states and 210192 transitions. [2020-10-14 19:12:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 19:12:43,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:43,848 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:43,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 19:12:43,849 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:43,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:43,849 INFO L82 PathProgramCache]: Analyzing trace with hash 960720441, now seen corresponding path program 1 times [2020-10-14 19:12:43,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:43,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936340183] [2020-10-14 19:12:43,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:43,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:48,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:48,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-14 19:12:48,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:12:48,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-14 19:12:48,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:48,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 19:12:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 19:12:48,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 19:12:48,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:12:49,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:49,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:49,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:12:49,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:49,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 19:12:49,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:49,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:12:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:49,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:12:49,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:12:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:49,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:49,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 19:12:49,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:12:49,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:49,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:12:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:12:49,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 19:12:49,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 19:12:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:49,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:49,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 19:12:49,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:12:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 19:12:49,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:49,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 19:12:49,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 19:12:49,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:49,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:49,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:12:49,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:49,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 19:12:49,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:49,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:12:49,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-14 19:12:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:49,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:49,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:12:49,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:12:49,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:12:49,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 19:12:49,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:12:49,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:12:49,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:12:49,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:12:49,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:12:49,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:12:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 160 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-14 19:12:49,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936340183] [2020-10-14 19:12:49,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:12:49,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 19:12:49,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396168519] [2020-10-14 19:12:49,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:12:49,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:12:49,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:12:49,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:12:49,623 INFO L87 Difference]: Start difference. First operand 118045 states and 210192 transitions. Second operand 9 states. [2020-10-14 19:12:49,748 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:49,997 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:12:53,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:12:53,995 INFO L93 Difference]: Finished difference Result 198488 states and 358153 transitions. [2020-10-14 19:12:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 19:12:53,996 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 296 [2020-10-14 19:12:53,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:12:54,532 INFO L225 Difference]: With dead ends: 198488 [2020-10-14 19:12:54,533 INFO L226 Difference]: Without dead ends: 118505 [2020-10-14 19:12:54,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-14 19:12:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118505 states. [2020-10-14 19:12:58,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118505 to 117721. [2020-10-14 19:12:58,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117721 states. [2020-10-14 19:12:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117721 states to 117721 states and 196274 transitions. [2020-10-14 19:12:58,972 INFO L78 Accepts]: Start accepts. Automaton has 117721 states and 196274 transitions. Word has length 296 [2020-10-14 19:12:58,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:12:58,973 INFO L479 AbstractCegarLoop]: Abstraction has 117721 states and 196274 transitions. [2020-10-14 19:12:58,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:12:58,973 INFO L276 IsEmpty]: Start isEmpty. Operand 117721 states and 196274 transitions. [2020-10-14 19:12:59,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-14 19:12:59,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:12:59,302 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:12:59,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 19:12:59,302 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:12:59,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:12:59,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1771272961, now seen corresponding path program 1 times [2020-10-14 19:12:59,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:12:59,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540692106] [2020-10-14 19:12:59,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:12:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:12:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:12:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:02,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:03,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:03,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-14 19:13:03,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 19:13:03,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3734 [2020-10-14 19:13:03,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:03,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 19:13:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:13:03,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-14 19:13:03,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:03,297 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:13:03,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:03,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:03,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:03,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:03,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:03,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:03,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 19:13:03,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:03,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:03,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:03,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:03,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:13:03,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 19:13:03,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:03,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:03,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:03,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 19:13:03,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 19:13:03,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:03,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:03,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 19:13:03,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:03,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-14 19:13:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:03,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:03,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:03,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 19:13:03,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:03,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 19:13:03,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:03,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 19:13:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:13:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:04,203 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 19:13:04,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540692106] [2020-10-14 19:13:04,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:04,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 19:13:04,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854916791] [2020-10-14 19:13:04,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 19:13:04,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:04,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 19:13:04,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 19:13:04,205 INFO L87 Difference]: Start difference. First operand 117721 states and 196274 transitions. Second operand 9 states. [2020-10-14 19:13:04,730 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 19:13:04,991 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 19:13:05,607 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:14,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:14,195 INFO L93 Difference]: Finished difference Result 366406 states and 617602 transitions. [2020-10-14 19:13:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 19:13:14,195 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 295 [2020-10-14 19:13:14,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:15,748 INFO L225 Difference]: With dead ends: 366406 [2020-10-14 19:13:15,748 INFO L226 Difference]: Without dead ends: 248723 [2020-10-14 19:13:16,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-10-14 19:13:16,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248723 states. [2020-10-14 19:13:26,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248723 to 247306. [2020-10-14 19:13:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247306 states. [2020-10-14 19:13:28,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247306 states to 247306 states and 414767 transitions. [2020-10-14 19:13:28,539 INFO L78 Accepts]: Start accepts. Automaton has 247306 states and 414767 transitions. Word has length 295 [2020-10-14 19:13:28,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:28,539 INFO L479 AbstractCegarLoop]: Abstraction has 247306 states and 414767 transitions. [2020-10-14 19:13:28,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 19:13:28,539 INFO L276 IsEmpty]: Start isEmpty. Operand 247306 states and 414767 transitions. [2020-10-14 19:13:29,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-14 19:13:29,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:29,373 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:29,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 19:13:29,374 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:29,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1402325493, now seen corresponding path program 1 times [2020-10-14 19:13:29,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:29,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660529706] [2020-10-14 19:13:29,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:29,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:29,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:32,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:32,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-14 19:13:32,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 19:13:32,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3199 [2020-10-14 19:13:32,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:32,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 19:13:32,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 19:13:32,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 19:13:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:32,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:13:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:32,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:32,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:32,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:13:32,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:32,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 19:13:32,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:32,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:32,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:13:32,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:13:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 19:13:32,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:13:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:32,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:33,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:33,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 19:13:33,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 19:13:33,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:33,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:13:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:13:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 19:13:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:33,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-14 19:13:33,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:33,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:33,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:13:33,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:13:33,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:13:33,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 19:13:33,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:13:33,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:13:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:13:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 19:13:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:13:33,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:13:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 106 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 19:13:33,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660529706] [2020-10-14 19:13:33,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:13:33,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:13:33,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014142994] [2020-10-14 19:13:33,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:13:33,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:13:33,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:13:33,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:13:33,145 INFO L87 Difference]: Start difference. First operand 247306 states and 414767 transitions. Second operand 7 states. [2020-10-14 19:13:33,281 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:33,514 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:13:49,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 19:13:49,403 INFO L93 Difference]: Finished difference Result 493823 states and 838773 transitions. [2020-10-14 19:13:49,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 19:13:49,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-14 19:13:49,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 19:13:50,504 INFO L225 Difference]: With dead ends: 493823 [2020-10-14 19:13:50,504 INFO L226 Difference]: Without dead ends: 246547 [2020-10-14 19:13:50,898 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 19:13:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246547 states. [2020-10-14 19:13:56,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246547 to 245807. [2020-10-14 19:13:56,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245807 states. [2020-10-14 19:13:57,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245807 states to 245807 states and 376343 transitions. [2020-10-14 19:13:57,735 INFO L78 Accepts]: Start accepts. Automaton has 245807 states and 376343 transitions. Word has length 305 [2020-10-14 19:13:57,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 19:13:57,735 INFO L479 AbstractCegarLoop]: Abstraction has 245807 states and 376343 transitions. [2020-10-14 19:13:57,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 19:13:57,736 INFO L276 IsEmpty]: Start isEmpty. Operand 245807 states and 376343 transitions. [2020-10-14 19:13:59,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-14 19:13:59,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 19:13:59,323 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 19:13:59,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 19:13:59,323 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 19:13:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 19:13:59,323 INFO L82 PathProgramCache]: Analyzing trace with hash 966031481, now seen corresponding path program 1 times [2020-10-14 19:13:59,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 19:13:59,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857579119] [2020-10-14 19:13:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 19:13:59,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:13:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:59,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:59,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:13:59,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:05,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:05,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-14 19:14:05,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 19:14:05,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6613 [2020-10-14 19:14:05,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:05,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-14 19:14:05,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 19:14:05,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:06,134 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 19:14:06,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 19:14:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:06,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:06,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 19:14:06,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:06,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 19:14:06,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:06,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:06,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:06,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:06,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 19:14:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:06,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:06,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:06,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 19:14:06,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:06,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:14:06,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:06,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:06,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:06,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:06,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 19:14:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:06,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:06,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:06,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 19:14:06,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 19:14:06,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:06,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:06,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:06,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:06,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 19:14:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:06,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:06,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:06,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 19:14:06,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:06,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 19:14:06,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:06,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:06,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:06,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-14 19:14:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:06,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:06,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:06,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 19:14:06,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:06,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 19:14:06,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:06,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:06,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 19:14:06,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:06,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 19:14:06,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:06,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 19:14:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:06,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 19:14:06,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:06,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 19:14:06,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:06,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 19:14:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 19:14:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 19:14:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-14 19:14:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 19:14:06,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 19:14:06,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 19:14:06,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 19:14:06,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 19:14:06,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-14 19:14:06,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 19:14:06,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 19:14:06,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 19:14:06,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 19:14:06,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 19:14:06,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 19:14:06,604 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-14 19:14:06,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857579119] [2020-10-14 19:14:06,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 19:14:06,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 19:14:06,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277996700] [2020-10-14 19:14:06,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 19:14:06,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 19:14:06,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 19:14:06,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 19:14:06,606 INFO L87 Difference]: Start difference. First operand 245807 states and 376343 transitions. Second operand 7 states. [2020-10-14 19:14:06,868 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 19:14:08,060 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 132