/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:50:35,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:50:35,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:50:35,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:50:35,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:50:35,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:50:35,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:50:35,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:50:35,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:50:35,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:50:35,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:50:35,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:50:35,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:50:35,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:50:35,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:50:35,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:50:35,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:50:35,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:50:35,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:50:35,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:50:35,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:50:35,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:50:35,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:50:35,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:50:35,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:50:35,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:50:35,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:50:35,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:50:35,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:50:35,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:50:35,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:50:35,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:50:35,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:50:35,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:50:35,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:50:35,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:50:35,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:50:35,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:50:35,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:50:35,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:50:35,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:50:35,284 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 00:50:35,306 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:50:35,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:50:35,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:50:35,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:50:35,308 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:50:35,308 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:50:35,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:50:35,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:50:35,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:50:35,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:50:35,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:50:35,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:50:35,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:50:35,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:50:35,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:50:35,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:50:35,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:50:35,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:50:35,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:50:35,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:50:35,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:50:35,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:50:35,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:50:35,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:50:35,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:50:35,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:50:35,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:50:35,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:50:35,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:50:35,313 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 00:50:35,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:50:35,632 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:50:35,638 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:50:35,641 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:50:35,641 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:50:35,642 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label26.c [2020-10-14 00:50:35,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/550da0471/9ff28f30f4d54b1ebe4cc911ce0ffa80/FLAG3a42f1abd [2020-10-14 00:50:36,370 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:50:36,370 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label26.c [2020-10-14 00:50:36,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/550da0471/9ff28f30f4d54b1ebe4cc911ce0ffa80/FLAG3a42f1abd [2020-10-14 00:50:36,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/550da0471/9ff28f30f4d54b1ebe4cc911ce0ffa80 [2020-10-14 00:50:36,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:50:36,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:50:36,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:50:36,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:50:36,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:50:36,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:50:36" (1/1) ... [2020-10-14 00:50:36,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24cd3f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:36, skipping insertion in model container [2020-10-14 00:50:36,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:50:36" (1/1) ... [2020-10-14 00:50:36,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:50:36,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:50:37,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:50:37,621 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:50:37,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:50:37,935 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:50:37,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:37 WrapperNode [2020-10-14 00:50:37,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:50:37,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:50:37,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:50:37,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:50:37,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:37" (1/1) ... [2020-10-14 00:50:37,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:37" (1/1) ... [2020-10-14 00:50:38,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:37" (1/1) ... [2020-10-14 00:50:38,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:37" (1/1) ... [2020-10-14 00:50:38,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:37" (1/1) ... [2020-10-14 00:50:38,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:37" (1/1) ... [2020-10-14 00:50:38,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:37" (1/1) ... [2020-10-14 00:50:38,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:50:38,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:50:38,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:50:38,121 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:50:38,122 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:37" (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 00:50:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:50:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:50:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 00:50:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:50:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 00:50:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:50:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 00:50:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 00:50:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:50:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:50:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:50:40,025 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:50:40,026 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:50:40,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:50:40 BoogieIcfgContainer [2020-10-14 00:50:40,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:50:40,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:50:40,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:50:40,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:50:40,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:50:36" (1/3) ... [2020-10-14 00:50:40,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378b09dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:50:40, skipping insertion in model container [2020-10-14 00:50:40,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:50:37" (2/3) ... [2020-10-14 00:50:40,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378b09dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:50:40, skipping insertion in model container [2020-10-14 00:50:40,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:50:40" (3/3) ... [2020-10-14 00:50:40,048 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label26.c [2020-10-14 00:50:40,059 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:50:40,076 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:50:40,092 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:50:40,136 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:50:40,137 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:50:40,137 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:50:40,137 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:50:40,137 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:50:40,137 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:50:40,137 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:50:40,138 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:50:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-14 00:50:40,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 00:50:40,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:40,208 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] [2020-10-14 00:50:40,208 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:40,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:40,218 INFO L82 PathProgramCache]: Analyzing trace with hash -142295563, now seen corresponding path program 1 times [2020-10-14 00:50:40,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:40,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475652835] [2020-10-14 00:50:40,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:40,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:41,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:44,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:44,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-14 00:50:44,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:50:44,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4083 [2020-10-14 00:50:44,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:44,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:50:44,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:50:44,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-14 00:50:44,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 00:50:45,236 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:50:45,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:45,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:45,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:45,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:45,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 00:50:45,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:45,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:45,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:50:45,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:45,336 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 00:50:45,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475652835] [2020-10-14 00:50:45,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:50:45,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 00:50:45,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16693879] [2020-10-14 00:50:45,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:50:45,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:45,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:50:45,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:50:45,363 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 5 states. [2020-10-14 00:50:45,542 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:50:45,971 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:50:49,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:49,442 INFO L93 Difference]: Finished difference Result 1111 states and 1980 transitions. [2020-10-14 00:50:49,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 00:50:49,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-14 00:50:49,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:49,477 INFO L225 Difference]: With dead ends: 1111 [2020-10-14 00:50:49,477 INFO L226 Difference]: Without dead ends: 703 [2020-10-14 00:50:49,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-14 00:50:49,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 467. [2020-10-14 00:50:49,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-10-14 00:50:49,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 718 transitions. [2020-10-14 00:50:49,587 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 718 transitions. Word has length 162 [2020-10-14 00:50:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:49,590 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 718 transitions. [2020-10-14 00:50:49,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:50:49,590 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 718 transitions. [2020-10-14 00:50:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 00:50:49,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:49,602 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:50:49,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:50:49,603 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:49,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:49,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1195424671, now seen corresponding path program 1 times [2020-10-14 00:50:49,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:49,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768456005] [2020-10-14 00:50:49,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:49,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:49,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:52,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:52,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 00:50:52,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:50:52,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2709 [2020-10-14 00:50:52,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:52,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:52,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:52,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 00:50:52,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 00:50:52,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:52,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:52,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:52,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:52,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:52,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:52,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:52,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:50:52,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:52,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:52,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:50:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:52,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:50:52,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:52,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:52,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:52,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 00:50:52,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:52,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 00:50:52,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:52,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:52,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:52,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 00:50:52,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:50:52,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768456005] [2020-10-14 00:50:52,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:52,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:50:52,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853930922] [2020-10-14 00:50:52,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:50:52,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:52,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:50:52,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:50:52,894 INFO L87 Difference]: Start difference. First operand 467 states and 718 transitions. Second operand 5 states. [2020-10-14 00:50:53,065 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:50:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:50:55,547 INFO L93 Difference]: Finished difference Result 1367 states and 2138 transitions. [2020-10-14 00:50:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:50:55,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-14 00:50:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:50:55,560 INFO L225 Difference]: With dead ends: 1367 [2020-10-14 00:50:55,561 INFO L226 Difference]: Without dead ends: 906 [2020-10-14 00:50:55,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 00:50:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-10-14 00:50:55,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 887. [2020-10-14 00:50:55,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 887 states. [2020-10-14 00:50:55,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1355 transitions. [2020-10-14 00:50:55,615 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1355 transitions. Word has length 174 [2020-10-14 00:50:55,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:50:55,615 INFO L479 AbstractCegarLoop]: Abstraction has 887 states and 1355 transitions. [2020-10-14 00:50:55,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:50:55,616 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1355 transitions. [2020-10-14 00:50:55,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-14 00:50:55,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:50:55,620 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 00:50:55,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:50:55,620 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:50:55,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:50:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1007858302, now seen corresponding path program 1 times [2020-10-14 00:50:55,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:50:55,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514215257] [2020-10-14 00:50:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:50:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:56,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:57,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:57,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-14 00:50:57,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:50:57,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1612 [2020-10-14 00:50:57,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:57,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:50:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:50:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 183 [2020-10-14 00:50:57,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:57,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:50:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:57,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:57,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:57,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:50:57,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:57,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:50:57,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:57,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:50:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:50:57,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:50:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:57,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:50:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:50:57,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:50:57,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:50:57,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:50:57,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:50:57,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 00:50:57,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:50:57,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:50:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:50:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:50:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:50:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:50:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 00:50:57,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514215257] [2020-10-14 00:50:57,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:50:57,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 00:50:57,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000081293] [2020-10-14 00:50:57,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:50:57,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:50:57,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:50:57,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:50:57,808 INFO L87 Difference]: Start difference. First operand 887 states and 1355 transitions. Second operand 7 states. [2020-10-14 00:50:57,949 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:50:58,231 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:51:01,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:01,782 INFO L93 Difference]: Finished difference Result 3511 states and 5671 transitions. [2020-10-14 00:51:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:51:01,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2020-10-14 00:51:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:01,814 INFO L225 Difference]: With dead ends: 3511 [2020-10-14 00:51:01,814 INFO L226 Difference]: Without dead ends: 2630 [2020-10-14 00:51:01,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:51:01,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-10-14 00:51:01,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2587. [2020-10-14 00:51:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2020-10-14 00:51:01,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3968 transitions. [2020-10-14 00:51:01,964 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3968 transitions. Word has length 179 [2020-10-14 00:51:01,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:01,966 INFO L479 AbstractCegarLoop]: Abstraction has 2587 states and 3968 transitions. [2020-10-14 00:51:01,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:51:01,971 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3968 transitions. [2020-10-14 00:51:01,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 00:51:01,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:01,980 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:51:01,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:51:01,980 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:01,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:01,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1451394595, now seen corresponding path program 1 times [2020-10-14 00:51:01,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:01,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409675945] [2020-10-14 00:51:01,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:02,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:02,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:03,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:07,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:07,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 00:51:07,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:51:07,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 00:51:07,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:07,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:07,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:07,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 00:51:07,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-14 00:51:07,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:07,377 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:51:07,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:07,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:07,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:07,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:07,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:07,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:51:07,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:07,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:07,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:07,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:07,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:07,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:07,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:07,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:07,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:51:07,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:07,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 00:51:07,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:07,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:07,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:07,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 00:51:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:07,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:07,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:07,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 00:51:07,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:07,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 00:51:07,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:07,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:07,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:07,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 00:51:07,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:51:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 00:51:07,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409675945] [2020-10-14 00:51:07,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:07,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 00:51:07,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302266092] [2020-10-14 00:51:07,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 00:51:07,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:07,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 00:51:07,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 00:51:07,631 INFO L87 Difference]: Start difference. First operand 2587 states and 3968 transitions. Second operand 5 states. [2020-10-14 00:51:07,858 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:51:10,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:10,770 INFO L93 Difference]: Finished difference Result 7510 states and 11846 transitions. [2020-10-14 00:51:10,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 00:51:10,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-14 00:51:10,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:10,802 INFO L225 Difference]: With dead ends: 7510 [2020-10-14 00:51:10,803 INFO L226 Difference]: Without dead ends: 4929 [2020-10-14 00:51:10,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 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 00:51:10,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4929 states. [2020-10-14 00:51:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4929 to 4906. [2020-10-14 00:51:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4906 states. [2020-10-14 00:51:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 7544 transitions. [2020-10-14 00:51:11,022 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 7544 transitions. Word has length 184 [2020-10-14 00:51:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:11,023 INFO L479 AbstractCegarLoop]: Abstraction has 4906 states and 7544 transitions. [2020-10-14 00:51:11,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 00:51:11,023 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 7544 transitions. [2020-10-14 00:51:11,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 00:51:11,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:11,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:51:11,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:51:11,039 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:11,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1432132019, now seen corresponding path program 1 times [2020-10-14 00:51:11,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:11,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16715023] [2020-10-14 00:51:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:11,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:11,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:12,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:13,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:15,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:15,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 00:51:15,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:51:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4650 [2020-10-14 00:51:15,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:15,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 00:51:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 00:51:15,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:15,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:15,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:15,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:15,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:15,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:15,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 00:51:15,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:15,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:15,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:15,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:15,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:15,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:15,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:16,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:16,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:51:16,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:16,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 00:51:16,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:16,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:16,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:51:16,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:51:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 00:51:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:16,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:16,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:16,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:51:16,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:16,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 00:51:16,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:16,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:16,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 00:51:16,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:51:16,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16715023] [2020-10-14 00:51:16,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:16,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:51:16,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606018379] [2020-10-14 00:51:16,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:51:16,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:16,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:51:16,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:51:16,159 INFO L87 Difference]: Start difference. First operand 4906 states and 7544 transitions. Second operand 7 states. [2020-10-14 00:51:17,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:17,951 INFO L93 Difference]: Finished difference Result 9785 states and 15145 transitions. [2020-10-14 00:51:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:51:17,951 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-14 00:51:17,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:17,975 INFO L225 Difference]: With dead ends: 9785 [2020-10-14 00:51:17,975 INFO L226 Difference]: Without dead ends: 4885 [2020-10-14 00:51:17,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-14 00:51:17,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4885 states. [2020-10-14 00:51:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4885 to 4877. [2020-10-14 00:51:18,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4877 states. [2020-10-14 00:51:18,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4877 states to 4877 states and 7338 transitions. [2020-10-14 00:51:18,149 INFO L78 Accepts]: Start accepts. Automaton has 4877 states and 7338 transitions. Word has length 192 [2020-10-14 00:51:18,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:18,149 INFO L479 AbstractCegarLoop]: Abstraction has 4877 states and 7338 transitions. [2020-10-14 00:51:18,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:51:18,149 INFO L276 IsEmpty]: Start isEmpty. Operand 4877 states and 7338 transitions. [2020-10-14 00:51:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-14 00:51:18,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:18,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:51:18,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:51:18,170 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:18,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:18,171 INFO L82 PathProgramCache]: Analyzing trace with hash -90018657, now seen corresponding path program 1 times [2020-10-14 00:51:18,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:18,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141208748] [2020-10-14 00:51:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:18,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:18,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:20,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:22,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:22,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-14 00:51:22,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:51:22,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4044 [2020-10-14 00:51:22,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:22,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-14 00:51:22,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 00:51:22,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:22,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:22,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:22,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:22,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:22,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:22,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 00:51:22,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:22,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:22,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:22,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:22,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:22,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:22,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 00:51:22,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:22,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 00:51:22,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:22,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:22,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:22,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 00:51:22,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:51:22,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-14 00:51:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:22,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:22,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 00:51:22,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 00:51:22,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:22,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:51:22,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:51:22,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141208748] [2020-10-14 00:51:22,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:22,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:51:22,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096117909] [2020-10-14 00:51:22,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:51:22,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:22,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:51:22,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:51:22,786 INFO L87 Difference]: Start difference. First operand 4877 states and 7338 transitions. Second operand 7 states. [2020-10-14 00:51:22,934 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:51:23,217 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:51:27,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:27,517 INFO L93 Difference]: Finished difference Result 18278 states and 31033 transitions. [2020-10-14 00:51:27,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:51:27,518 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 240 [2020-10-14 00:51:27,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:27,618 INFO L225 Difference]: With dead ends: 18278 [2020-10-14 00:51:27,618 INFO L226 Difference]: Without dead ends: 13407 [2020-10-14 00:51:27,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:51:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13407 states. [2020-10-14 00:51:28,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13407 to 13161. [2020-10-14 00:51:28,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13161 states. [2020-10-14 00:51:28,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13161 states to 13161 states and 19466 transitions. [2020-10-14 00:51:28,237 INFO L78 Accepts]: Start accepts. Automaton has 13161 states and 19466 transitions. Word has length 240 [2020-10-14 00:51:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:28,238 INFO L479 AbstractCegarLoop]: Abstraction has 13161 states and 19466 transitions. [2020-10-14 00:51:28,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:51:28,238 INFO L276 IsEmpty]: Start isEmpty. Operand 13161 states and 19466 transitions. [2020-10-14 00:51:28,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-14 00:51:28,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:28,286 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:51:28,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:51:28,286 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:28,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:28,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1585617972, now seen corresponding path program 1 times [2020-10-14 00:51:28,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:28,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005442338] [2020-10-14 00:51:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:28,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:28,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:32,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:32,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-14 00:51:32,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:51:32,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3670 [2020-10-14 00:51:32,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:32,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 00:51:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 00:51:32,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:32,218 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:51:32,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:32,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:32,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:32,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:32,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:32,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:51:32,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:32,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:32,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:32,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:32,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:32,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:32,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:32,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:32,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:32,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 00:51:32,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:32,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:51:32,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:32,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:51:32,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:32,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 00:51:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:32,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:32,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:32,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 00:51:32,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:32,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 00:51:32,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:32,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:32,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:32,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:51:32,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:32,599 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:51:32,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005442338] [2020-10-14 00:51:32,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:32,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:51:32,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34351676] [2020-10-14 00:51:32,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:51:32,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:32,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:51:32,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:51:32,602 INFO L87 Difference]: Start difference. First operand 13161 states and 19466 transitions. Second operand 7 states. [2020-10-14 00:51:32,743 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:33,024 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:37,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:37,007 INFO L93 Difference]: Finished difference Result 34414 states and 53813 transitions. [2020-10-14 00:51:37,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:51:37,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-10-14 00:51:37,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:37,103 INFO L225 Difference]: With dead ends: 34414 [2020-10-14 00:51:37,104 INFO L226 Difference]: Without dead ends: 21263 [2020-10-14 00:51:37,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 00:51:37,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21263 states. [2020-10-14 00:51:37,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21263 to 20991. [2020-10-14 00:51:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20991 states. [2020-10-14 00:51:37,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20991 states to 20991 states and 29764 transitions. [2020-10-14 00:51:37,805 INFO L78 Accepts]: Start accepts. Automaton has 20991 states and 29764 transitions. Word has length 241 [2020-10-14 00:51:37,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:37,806 INFO L479 AbstractCegarLoop]: Abstraction has 20991 states and 29764 transitions. [2020-10-14 00:51:37,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:51:37,806 INFO L276 IsEmpty]: Start isEmpty. Operand 20991 states and 29764 transitions. [2020-10-14 00:51:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-14 00:51:37,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:37,863 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:51:37,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 00:51:37,864 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:37,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:37,864 INFO L82 PathProgramCache]: Analyzing trace with hash -35274064, now seen corresponding path program 1 times [2020-10-14 00:51:37,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:37,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484889646] [2020-10-14 00:51:37,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:37,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:38,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:39,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:41,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:41,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-14 00:51:41,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:51:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3292 [2020-10-14 00:51:41,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:41,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:41,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:41,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 00:51:41,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 00:51:41,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:41,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:41,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:41,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:41,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:41,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:41,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:51:41,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:41,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:51:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:41,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:51:41,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:41,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:41,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:41,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:41,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 00:51:41,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 00:51:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:41,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:41,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:41,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 00:51:41,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:41,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 00:51:41,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:41,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:41,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:41,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:51:41,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:51:41,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484889646] [2020-10-14 00:51:41,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:51:41,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:51:41,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344518970] [2020-10-14 00:51:41,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:51:41,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:41,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:51:41,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:51:41,683 INFO L87 Difference]: Start difference. First operand 20991 states and 29764 transitions. Second operand 7 states. [2020-10-14 00:51:41,939 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:51:42,144 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:46,722 INFO L93 Difference]: Finished difference Result 78270 states and 122036 transitions. [2020-10-14 00:51:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:51:46,722 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-10-14 00:51:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:47,057 INFO L225 Difference]: With dead ends: 78270 [2020-10-14 00:51:47,057 INFO L226 Difference]: Without dead ends: 58975 [2020-10-14 00:51:47,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:51:47,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58975 states. [2020-10-14 00:51:50,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58975 to 56636. [2020-10-14 00:51:50,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56636 states. [2020-10-14 00:51:50,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56636 states to 56636 states and 81886 transitions. [2020-10-14 00:51:50,342 INFO L78 Accepts]: Start accepts. Automaton has 56636 states and 81886 transitions. Word has length 243 [2020-10-14 00:51:50,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:51:50,342 INFO L479 AbstractCegarLoop]: Abstraction has 56636 states and 81886 transitions. [2020-10-14 00:51:50,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:51:50,343 INFO L276 IsEmpty]: Start isEmpty. Operand 56636 states and 81886 transitions. [2020-10-14 00:51:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-14 00:51:50,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:51:50,573 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:51:50,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 00:51:50,574 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:51:50,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:51:50,574 INFO L82 PathProgramCache]: Analyzing trace with hash -2127099705, now seen corresponding path program 1 times [2020-10-14 00:51:50,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:51:50,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111251642] [2020-10-14 00:51:50,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:51:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:50,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:51,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:51,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-14 00:51:51,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:51,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-10-14 00:51:51,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:51,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:51:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:51:51,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 00:51:51,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:51:51,423 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:51:51,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:51:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:51,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:51,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:51,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:51:51,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:51,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 00:51:51,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:51,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:51:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:51:51,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:51:51,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:51,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:51:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:51:51,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:51:51,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:51:51,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 00:51:51,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:51:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 00:51:51,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:51:51,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:51:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:51:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:51:51,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 00:51:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:51:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:51:52,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111251642] [2020-10-14 00:51:52,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:51:52,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:51:52,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946571565] [2020-10-14 00:51:52,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:51:52,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:51:52,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:51:52,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:51:52,048 INFO L87 Difference]: Start difference. First operand 56636 states and 81886 transitions. Second operand 7 states. [2020-10-14 00:51:52,185 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:52,590 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 00:51:57,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:51:57,145 INFO L93 Difference]: Finished difference Result 143814 states and 211638 transitions. [2020-10-14 00:51:57,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:51:57,146 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-14 00:51:57,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:51:57,606 INFO L225 Difference]: With dead ends: 143814 [2020-10-14 00:51:57,606 INFO L226 Difference]: Without dead ends: 88265 [2020-10-14 00:51:57,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 00:51:57,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88265 states. [2020-10-14 00:52:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88265 to 87610. [2020-10-14 00:52:02,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87610 states. [2020-10-14 00:52:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87610 states to 87610 states and 122915 transitions. [2020-10-14 00:52:02,454 INFO L78 Accepts]: Start accepts. Automaton has 87610 states and 122915 transitions. Word has length 244 [2020-10-14 00:52:02,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:52:02,455 INFO L479 AbstractCegarLoop]: Abstraction has 87610 states and 122915 transitions. [2020-10-14 00:52:02,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:52:02,456 INFO L276 IsEmpty]: Start isEmpty. Operand 87610 states and 122915 transitions. [2020-10-14 00:52:02,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-14 00:52:02,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:52:02,675 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:52:02,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 00:52:02,676 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:52:02,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:52:02,676 INFO L82 PathProgramCache]: Analyzing trace with hash 398724300, now seen corresponding path program 1 times [2020-10-14 00:52:02,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:52:02,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557649344] [2020-10-14 00:52:02,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:52:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:02,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:03,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:03,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 00:52:03,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:03,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1127 [2020-10-14 00:52:03,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:03,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 00:52:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 00:52:03,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:52:04,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:52:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:04,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:04,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:04,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:52:04,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:04,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:52:04,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:04,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:04,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:04,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:04,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:52:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:04,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:04,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:04,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 00:52:04,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:04,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 00:52:04,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:04,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:52:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:04,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 00:52:04,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:04,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 00:52:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:04,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:04,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 00:52:04,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:04,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-14 00:52:04,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:04,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 00:52:04,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:52:04,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557649344] [2020-10-14 00:52:04,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:52:04,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:52:04,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600707850] [2020-10-14 00:52:04,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:52:04,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:52:04,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:52:04,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:52:04,461 INFO L87 Difference]: Start difference. First operand 87610 states and 122915 transitions. Second operand 7 states. [2020-10-14 00:52:04,690 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:52:05,022 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:52:09,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:52:09,937 INFO L93 Difference]: Finished difference Result 179472 states and 273243 transitions. [2020-10-14 00:52:09,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:52:09,937 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-14 00:52:09,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:52:10,556 INFO L225 Difference]: With dead ends: 179472 [2020-10-14 00:52:10,556 INFO L226 Difference]: Without dead ends: 100758 [2020-10-14 00:52:10,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:52:10,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100758 states. [2020-10-14 00:52:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100758 to 98456. [2020-10-14 00:52:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98456 states. [2020-10-14 00:52:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98456 states to 98456 states and 137335 transitions. [2020-10-14 00:52:16,241 INFO L78 Accepts]: Start accepts. Automaton has 98456 states and 137335 transitions. Word has length 265 [2020-10-14 00:52:16,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:52:16,242 INFO L479 AbstractCegarLoop]: Abstraction has 98456 states and 137335 transitions. [2020-10-14 00:52:16,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:52:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 98456 states and 137335 transitions. [2020-10-14 00:52:16,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-14 00:52:16,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:52:16,386 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:52:16,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 00:52:16,387 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:52:16,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:52:16,387 INFO L82 PathProgramCache]: Analyzing trace with hash 523764416, now seen corresponding path program 1 times [2020-10-14 00:52:16,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:52:16,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801459809] [2020-10-14 00:52:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:52:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:16,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:17,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:19,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:19,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-14 00:52:19,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 00:52:19,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3053 [2020-10-14 00:52:19,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:19,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-14 00:52:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 00:52:19,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:19,638 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:52:19,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:52:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:19,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:19,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:19,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:52:19,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:19,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:52:19,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:19,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:19,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:19,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:19,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:52:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:19,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:19,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:19,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 00:52:19,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:19,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 00:52:19,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:19,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:19,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:52:19,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:19,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 00:52:19,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:19,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 00:52:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:19,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:19,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:19,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 00:52:19,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:19,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-14 00:52:19,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:19,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:19,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:19,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 00:52:19,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:52:20,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801459809] [2020-10-14 00:52:20,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:52:20,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:52:20,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892394940] [2020-10-14 00:52:20,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:52:20,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:52:20,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:52:20,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:52:20,029 INFO L87 Difference]: Start difference. First operand 98456 states and 137335 transitions. Second operand 7 states. [2020-10-14 00:52:20,343 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:52:20,472 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:52:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:52:25,645 INFO L93 Difference]: Finished difference Result 197264 states and 296354 transitions. [2020-10-14 00:52:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:52:25,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-14 00:52:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:52:26,149 INFO L225 Difference]: With dead ends: 197264 [2020-10-14 00:52:26,150 INFO L226 Difference]: Without dead ends: 109520 [2020-10-14 00:52:26,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:52:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109520 states. [2020-10-14 00:52:28,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109520 to 106992. [2020-10-14 00:52:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106992 states. [2020-10-14 00:52:29,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106992 states to 106992 states and 145354 transitions. [2020-10-14 00:52:29,096 INFO L78 Accepts]: Start accepts. Automaton has 106992 states and 145354 transitions. Word has length 271 [2020-10-14 00:52:29,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:52:29,097 INFO L479 AbstractCegarLoop]: Abstraction has 106992 states and 145354 transitions. [2020-10-14 00:52:29,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:52:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 106992 states and 145354 transitions. [2020-10-14 00:52:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2020-10-14 00:52:29,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:52:29,247 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, 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] [2020-10-14 00:52:29,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 00:52:29,247 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:52:29,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:52:29,248 INFO L82 PathProgramCache]: Analyzing trace with hash -526136444, now seen corresponding path program 1 times [2020-10-14 00:52:29,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:52:29,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1652544592] [2020-10-14 00:52:29,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:52:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:29,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:29,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:32,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:32,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-14 00:52:32,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:52:32,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2708 [2020-10-14 00:52:32,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:32,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:32,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 00:52:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:52:32,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 00:52:32,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:32,185 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:52:32,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:52:32,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:32,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:32,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:32,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:52:32,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:32,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 00:52:32,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:32,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:52:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:32,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:52:32,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:32,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:52:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:32,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:32,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:32,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 00:52:32,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:32,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 00:52:32,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:32,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:32,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 00:52:32,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:52:32,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 00:52:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:32,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:32,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:32,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 00:52:32,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:32,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-14 00:52:32,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:32,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 00:52:32,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:32,789 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 109 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 00:52:32,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1652544592] [2020-10-14 00:52:32,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:52:32,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:52:32,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176669098] [2020-10-14 00:52:32,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 00:52:32,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:52:32,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 00:52:32,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:52:32,791 INFO L87 Difference]: Start difference. First operand 106992 states and 145354 transitions. Second operand 8 states. [2020-10-14 00:52:32,942 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:52:33,536 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:52:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:52:37,568 INFO L93 Difference]: Finished difference Result 232827 states and 323694 transitions. [2020-10-14 00:52:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:52:37,568 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 276 [2020-10-14 00:52:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:52:37,886 INFO L225 Difference]: With dead ends: 232827 [2020-10-14 00:52:37,886 INFO L226 Difference]: Without dead ends: 131847 [2020-10-14 00:52:37,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-14 00:52:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131847 states. [2020-10-14 00:52:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131847 to 131121. [2020-10-14 00:52:44,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131121 states. [2020-10-14 00:52:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131121 states to 131121 states and 176640 transitions. [2020-10-14 00:52:44,256 INFO L78 Accepts]: Start accepts. Automaton has 131121 states and 176640 transitions. Word has length 276 [2020-10-14 00:52:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:52:44,256 INFO L479 AbstractCegarLoop]: Abstraction has 131121 states and 176640 transitions. [2020-10-14 00:52:44,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 00:52:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 131121 states and 176640 transitions. [2020-10-14 00:52:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-14 00:52:44,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:52:44,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:52:44,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 00:52:44,396 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:52:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:52:44,396 INFO L82 PathProgramCache]: Analyzing trace with hash -2053952848, now seen corresponding path program 1 times [2020-10-14 00:52:44,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:52:44,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743309406] [2020-10-14 00:52:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:52:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:44,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:44,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:44,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-14 00:52:44,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-14 00:52:44,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:44,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-14 00:52:44,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 00:52:44,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:45,146 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:52:45,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:52:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:45,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:45,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:45,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:52:45,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:45,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 00:52:45,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:45,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:45,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:45,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:45,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:45,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:45,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:52:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:45,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:45,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:45,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 00:52:45,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:45,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 00:52:45,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:45,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:45,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:52:45,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:45,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 00:52:45,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:52:45,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-14 00:52:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:45,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:45,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:45,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 00:52:45,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:45,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 00:52:45,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:45,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:45,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 00:52:45,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:52:45,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743309406] [2020-10-14 00:52:45,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:52:45,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:52:45,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863906609] [2020-10-14 00:52:45,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:52:45,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:52:45,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:52:45,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:52:45,652 INFO L87 Difference]: Start difference. First operand 131121 states and 176640 transitions. Second operand 7 states. [2020-10-14 00:52:45,904 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:52:46,052 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 00:52:52,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:52:52,190 INFO L93 Difference]: Finished difference Result 279424 states and 401203 transitions. [2020-10-14 00:52:52,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 00:52:52,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2020-10-14 00:52:52,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:52:52,716 INFO L225 Difference]: With dead ends: 279424 [2020-10-14 00:52:52,716 INFO L226 Difference]: Without dead ends: 151256 [2020-10-14 00:52:52,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 00:52:52,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151256 states. [2020-10-14 00:52:55,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151256 to 147460. [2020-10-14 00:52:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147460 states. [2020-10-14 00:52:57,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147460 states to 147460 states and 195575 transitions. [2020-10-14 00:52:57,154 INFO L78 Accepts]: Start accepts. Automaton has 147460 states and 195575 transitions. Word has length 279 [2020-10-14 00:52:57,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:52:57,154 INFO L479 AbstractCegarLoop]: Abstraction has 147460 states and 195575 transitions. [2020-10-14 00:52:57,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:52:57,155 INFO L276 IsEmpty]: Start isEmpty. Operand 147460 states and 195575 transitions. [2020-10-14 00:52:57,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-14 00:52:57,302 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:52:57,302 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:52:57,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 00:52:57,302 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:52:57,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:52:57,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1801105099, now seen corresponding path program 1 times [2020-10-14 00:52:57,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:52:57,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957450822] [2020-10-14 00:52:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:52:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:58,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:58,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-14 00:52:58,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:58,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-10-14 00:52:58,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:58,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:58,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 00:52:58,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 00:52:58,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 00:52:58,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:58,262 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:52:58,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:52:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:58,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:58,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:58,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:52:58,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:58,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:52:58,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:58,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:52:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:52:58,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:52:58,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:58,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:52:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:58,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:58,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:58,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:52:58,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:58,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-14 00:52:58,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:58,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:52:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:52:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 00:52:58,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:58,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-14 00:52:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:52:58,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:52:58,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:52:58,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 00:52:58,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:52:58,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 00:52:58,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:52:58,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:52:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:52:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 00:52:58,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:52:58,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:52:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 121 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 00:52:58,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957450822] [2020-10-14 00:52:58,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:52:58,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:52:58,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114314353] [2020-10-14 00:52:58,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:52:58,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:52:58,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:52:58,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:52:58,726 INFO L87 Difference]: Start difference. First operand 147460 states and 195575 transitions. Second operand 7 states. [2020-10-14 00:52:58,872 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:52:59,963 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 00:53:05,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:53:05,639 INFO L93 Difference]: Finished difference Result 315715 states and 418445 transitions. [2020-10-14 00:53:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:53:05,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2020-10-14 00:53:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:53:06,098 INFO L225 Difference]: With dead ends: 315715 [2020-10-14 00:53:06,099 INFO L226 Difference]: Without dead ends: 193996 [2020-10-14 00:53:06,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:53:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193996 states. [2020-10-14 00:53:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193996 to 193572. [2020-10-14 00:53:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193572 states. [2020-10-14 00:53:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193572 states to 193572 states and 252602 transitions. [2020-10-14 00:53:12,437 INFO L78 Accepts]: Start accepts. Automaton has 193572 states and 252602 transitions. Word has length 289 [2020-10-14 00:53:12,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:53:12,437 INFO L479 AbstractCegarLoop]: Abstraction has 193572 states and 252602 transitions. [2020-10-14 00:53:12,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:53:12,437 INFO L276 IsEmpty]: Start isEmpty. Operand 193572 states and 252602 transitions. [2020-10-14 00:53:12,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-14 00:53:12,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:53:12,625 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 00:53:12,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 00:53:12,625 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:53:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:53:12,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1924419449, now seen corresponding path program 1 times [2020-10-14 00:53:12,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:53:12,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957119544] [2020-10-14 00:53:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:53:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:12,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:12,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:13,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:15,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:17,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:17,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 00:53:17,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 00:53:17,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5186 [2020-10-14 00:53:17,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:17,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:17,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:17,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-14 00:53:17,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 00:53:17,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:18,057 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:53:18,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:53:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:18,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:18,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:18,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:53:18,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 00:53:18,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:18,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:18,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:18,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:18,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:18,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:18,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:53:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:18,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:18,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:18,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 00:53:18,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-14 00:53:18,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:18,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:53:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:18,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 00:53:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:18,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 00:53:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:18,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:18,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:18,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 00:53:18,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:18,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-14 00:53:18,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:18,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:18,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:53:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 00:53:18,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:53:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 00:53:18,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957119544] [2020-10-14 00:53:18,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:53:18,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:53:18,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683819593] [2020-10-14 00:53:18,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:53:18,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:53:18,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:53:18,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:53:18,599 INFO L87 Difference]: Start difference. First operand 193572 states and 252602 transitions. Second operand 7 states. [2020-10-14 00:53:18,960 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:53:20,914 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 00:53:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:53:25,429 INFO L93 Difference]: Finished difference Result 394146 states and 542569 transitions. [2020-10-14 00:53:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:53:25,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-14 00:53:25,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:53:26,009 INFO L225 Difference]: With dead ends: 394146 [2020-10-14 00:53:26,009 INFO L226 Difference]: Without dead ends: 197052 [2020-10-14 00:53:26,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:53:26,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197052 states. [2020-10-14 00:53:29,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197052 to 189760. [2020-10-14 00:53:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189760 states. [2020-10-14 00:53:29,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189760 states to 189760 states and 232019 transitions. [2020-10-14 00:53:29,836 INFO L78 Accepts]: Start accepts. Automaton has 189760 states and 232019 transitions. Word has length 294 [2020-10-14 00:53:29,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:53:29,836 INFO L479 AbstractCegarLoop]: Abstraction has 189760 states and 232019 transitions. [2020-10-14 00:53:29,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:53:29,836 INFO L276 IsEmpty]: Start isEmpty. Operand 189760 states and 232019 transitions. [2020-10-14 00:53:29,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-14 00:53:29,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:53:29,999 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 00:53:30,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 00:53:30,000 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:53:30,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:53:30,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1169399836, now seen corresponding path program 1 times [2020-10-14 00:53:30,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:53:30,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297210802] [2020-10-14 00:53:30,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:53:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:30,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:31,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:32,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:32,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-14 00:53:32,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:53:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2341 [2020-10-14 00:53:32,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:32,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 00:53:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 00:53:32,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:32,558 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 00:53:32,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:53:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:32,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:32,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 00:53:32,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:32,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 00:53:32,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:32,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:32,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:32,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:32,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 00:53:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:32,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:32,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 00:53:32,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:32,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 00:53:32,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:32,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:53:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:53:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:53:32,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:32,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 00:53:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:32,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:32,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:32,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 00:53:32,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:32,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 00:53:32,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:32,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:32,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 00:53:32,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 00:53:32,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 00:53:32,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:32,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-14 00:53:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:53:32,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:53:32,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:53:32,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 00:53:32,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:53:32,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 00:53:32,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:53:32,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:53:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:53:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 00:53:32,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:53:32,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:53:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 141 proven. 44 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 00:53:32,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297210802] [2020-10-14 00:53:32,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:53:32,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 00:53:32,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589155740] [2020-10-14 00:53:32,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 00:53:32,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:53:32,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 00:53:32,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 00:53:32,985 INFO L87 Difference]: Start difference. First operand 189760 states and 232019 transitions. Second operand 7 states. [2020-10-14 00:53:33,126 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 00:53:33,806 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 00:53:39,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:53:39,361 INFO L93 Difference]: Finished difference Result 384214 states and 502579 transitions. [2020-10-14 00:53:39,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 00:53:39,361 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-14 00:53:39,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:53:40,091 INFO L225 Difference]: With dead ends: 384214 [2020-10-14 00:53:40,091 INFO L226 Difference]: Without dead ends: 209969 [2020-10-14 00:53:40,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 00:53:40,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209969 states. [2020-10-14 00:53:49,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209969 to 204270. [2020-10-14 00:53:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204270 states. [2020-10-14 00:53:49,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204270 states to 204270 states and 246666 transitions. [2020-10-14 00:53:49,466 INFO L78 Accepts]: Start accepts. Automaton has 204270 states and 246666 transitions. Word has length 300 [2020-10-14 00:53:49,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:53:49,466 INFO L479 AbstractCegarLoop]: Abstraction has 204270 states and 246666 transitions. [2020-10-14 00:53:49,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 00:53:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 204270 states and 246666 transitions.