/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 14:19:50,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 14:19:50,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 14:19:50,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 14:19:50,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 14:19:50,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 14:19:50,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 14:19:50,223 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 14:19:50,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 14:19:50,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 14:19:50,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 14:19:50,232 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 14:19:50,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 14:19:50,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 14:19:50,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 14:19:50,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 14:19:50,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 14:19:50,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 14:19:50,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 14:19:50,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 14:19:50,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 14:19:50,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 14:19:50,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 14:19:50,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 14:19:50,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 14:19:50,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 14:19:50,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 14:19:50,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 14:19:50,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 14:19:50,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 14:19:50,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 14:19:50,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 14:19:50,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 14:19:50,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 14:19:50,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 14:19:50,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 14:19:50,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 14:19:50,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 14:19:50,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 14:19:50,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 14:19:50,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 14:19:50,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 14:19:50,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 14:19:50,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 14:19:50,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 14:19:50,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 14:19:50,311 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 14:19:50,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 14:19:50,311 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 14:19:50,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 14:19:50,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 14:19:50,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 14:19:50,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 14:19:50,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 14:19:50,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 14:19:50,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 14:19:50,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 14:19:50,313 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 14:19:50,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 14:19:50,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 14:19:50,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 14:19:50,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 14:19:50,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 14:19:50,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:19:50,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 14:19:50,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 14:19:50,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 14:19:50,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 14:19:50,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 14:19:50,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 14:19:50,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 14:19:50,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 14:19:50,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 14:19:50,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 14:19:50,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 14:19:50,680 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 14:19:50,681 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 14:19:50,681 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2020-10-12 14:19:50,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf6773923/d24a472ebe974d31be0aa1be7c0abdc4/FLAGa76564e79 [2020-10-12 14:19:51,390 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 14:19:51,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label53.c [2020-10-12 14:19:51,410 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf6773923/d24a472ebe974d31be0aa1be7c0abdc4/FLAGa76564e79 [2020-10-12 14:19:51,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf6773923/d24a472ebe974d31be0aa1be7c0abdc4 [2020-10-12 14:19:51,608 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 14:19:51,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 14:19:51,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 14:19:51,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 14:19:51,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 14:19:51,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:19:51" (1/1) ... [2020-10-12 14:19:51,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6266eb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:51, skipping insertion in model container [2020-10-12 14:19:51,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 02:19:51" (1/1) ... [2020-10-12 14:19:51,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 14:19:51,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 14:19:52,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:19:52,731 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 14:19:52,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 14:19:53,025 INFO L208 MainTranslator]: Completed translation [2020-10-12 14:19:53,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:53 WrapperNode [2020-10-12 14:19:53,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 14:19:53,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 14:19:53,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 14:19:53,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 14:19:53,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:53" (1/1) ... [2020-10-12 14:19:53,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:53" (1/1) ... [2020-10-12 14:19:53,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:53" (1/1) ... [2020-10-12 14:19:53,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:53" (1/1) ... [2020-10-12 14:19:53,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:53" (1/1) ... [2020-10-12 14:19:53,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:53" (1/1) ... [2020-10-12 14:19:53,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:53" (1/1) ... [2020-10-12 14:19:53,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 14:19:53,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 14:19:53,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 14:19:53,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 14:19:53,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 14:19:53,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 14:19:53,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 14:19:53,306 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 14:19:53,307 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-12 14:19:53,307 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 14:19:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 14:19:53,307 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-12 14:19:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 14:19:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 14:19:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 14:19:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 14:19:53,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 14:19:53,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 14:19:59,047 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 14:19:59,047 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 14:19:59,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:19:59 BoogieIcfgContainer [2020-10-12 14:19:59,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 14:19:59,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 14:19:59,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 14:19:59,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 14:19:59,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 02:19:51" (1/3) ... [2020-10-12 14:19:59,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b702d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:19:59, skipping insertion in model container [2020-10-12 14:19:59,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 02:19:53" (2/3) ... [2020-10-12 14:19:59,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b702d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 02:19:59, skipping insertion in model container [2020-10-12 14:19:59,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 02:19:59" (3/3) ... [2020-10-12 14:19:59,063 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label53.c [2020-10-12 14:19:59,074 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 14:19:59,082 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 14:19:59,097 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 14:19:59,124 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 14:19:59,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 14:19:59,124 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 14:19:59,125 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 14:19:59,125 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 14:19:59,125 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 14:19:59,125 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 14:19:59,125 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 14:19:59,156 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2020-10-12 14:19:59,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 14:19:59,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:19:59,167 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] [2020-10-12 14:19:59,167 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:19:59,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:19:59,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1056547171, now seen corresponding path program 1 times [2020-10-12 14:19:59,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:19:59,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168404015] [2020-10-12 14:19:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:19:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:59,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:59,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 14:19:59,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-10-12 14:19:59,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:59,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:19:59,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:19:59,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 14:19:59,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 14:19:59,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:19:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:19:59,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:19:59,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:19:59,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:19:59,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:19:59,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:19:59,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:19:59,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:19:59,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:19:59,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:19:59,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:19:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:19:59,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168404015] [2020-10-12 14:19:59,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:19:59,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-12 14:19:59,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532161036] [2020-10-12 14:19:59,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 14:19:59,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:19:59,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 14:19:59,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 14:19:59,962 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2020-10-12 14:20:05,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:05,808 INFO L93 Difference]: Finished difference Result 1199 states and 2164 transitions. [2020-10-12 14:20:05,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:20:05,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-12 14:20:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:05,831 INFO L225 Difference]: With dead ends: 1199 [2020-10-12 14:20:05,831 INFO L226 Difference]: Without dead ends: 697 [2020-10-12 14:20:05,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:20:05,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-12 14:20:05,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 691. [2020-10-12 14:20:05,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:20:05,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1012 transitions. [2020-10-12 14:20:05,947 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1012 transitions. Word has length 53 [2020-10-12 14:20:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:05,948 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 1012 transitions. [2020-10-12 14:20:05,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 14:20:05,948 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1012 transitions. [2020-10-12 14:20:05,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 14:20:05,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:05,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:05,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 14:20:05,960 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:05,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:05,961 INFO L82 PathProgramCache]: Analyzing trace with hash 702573530, now seen corresponding path program 1 times [2020-10-12 14:20:05,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:05,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435884582] [2020-10-12 14:20:05,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:06,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:06,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:06,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:08,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:08,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-12 14:20:08,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:20:08,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2221 [2020-10-12 14:20:08,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:08,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:20:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-12 14:20:08,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 14:20:08,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:08,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:08,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:08,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:08,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:08,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:08,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:20:08,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:08,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:08,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:08,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:08,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:08,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:08,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 14:20:08,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:08,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 14:20:08,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:08,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:08,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 14:20:08,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 14:20:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:20:08,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435884582] [2020-10-12 14:20:08,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:08,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:20:08,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106451803] [2020-10-12 14:20:08,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:20:08,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:08,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:20:08,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:20:08,812 INFO L87 Difference]: Start difference. First operand 691 states and 1012 transitions. Second operand 8 states. [2020-10-12 14:20:16,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:16,946 INFO L93 Difference]: Finished difference Result 1507 states and 2170 transitions. [2020-10-12 14:20:16,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:20:16,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-12 14:20:16,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:16,956 INFO L225 Difference]: With dead ends: 1507 [2020-10-12 14:20:16,956 INFO L226 Difference]: Without dead ends: 695 [2020-10-12 14:20:16,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:20:16,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-12 14:20:16,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2020-10-12 14:20:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-12 14:20:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 929 transitions. [2020-10-12 14:20:16,992 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 929 transitions. Word has length 122 [2020-10-12 14:20:16,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:16,993 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 929 transitions. [2020-10-12 14:20:16,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:20:16,993 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 929 transitions. [2020-10-12 14:20:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-12 14:20:16,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:16,996 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:16,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 14:20:16,997 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:16,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:16,997 INFO L82 PathProgramCache]: Analyzing trace with hash 741212625, now seen corresponding path program 1 times [2020-10-12 14:20:16,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:16,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045378878] [2020-10-12 14:20:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:17,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:17,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:18,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:18,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-12 14:20:18,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:20:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1248 [2020-10-12 14:20:18,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:20:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:20:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 14:20:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:18,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:18,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:18,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:18,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:18,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 14:20:18,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:20:18,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:18,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:18,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:18,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:18,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:20:18,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:18,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 14:20:18,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:18,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:18,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:18,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 14:20:18,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:20:18,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045378878] [2020-10-12 14:20:18,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 14:20:18,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 14:20:18,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708131757] [2020-10-12 14:20:18,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:20:18,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:18,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:20:18,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:20:18,795 INFO L87 Difference]: Start difference. First operand 691 states and 929 transitions. Second operand 8 states. [2020-10-12 14:20:28,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:28,065 INFO L93 Difference]: Finished difference Result 1726 states and 2281 transitions. [2020-10-12 14:20:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:20:28,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-10-12 14:20:28,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:28,075 INFO L225 Difference]: With dead ends: 1726 [2020-10-12 14:20:28,076 INFO L226 Difference]: Without dead ends: 1041 [2020-10-12 14:20:28,078 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:20:28,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2020-10-12 14:20:28,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1008. [2020-10-12 14:20:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1008 states. [2020-10-12 14:20:28,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1253 transitions. [2020-10-12 14:20:28,149 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1253 transitions. Word has length 133 [2020-10-12 14:20:28,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:28,152 INFO L479 AbstractCegarLoop]: Abstraction has 1008 states and 1253 transitions. [2020-10-12 14:20:28,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:20:28,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1253 transitions. [2020-10-12 14:20:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-12 14:20:28,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:28,169 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:28,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 14:20:28,171 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:28,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:28,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1718483607, now seen corresponding path program 1 times [2020-10-12 14:20:28,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:28,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [594931714] [2020-10-12 14:20:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:28,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:28,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:29,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:30,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:30,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-12 14:20:30,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:20:30,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2287 [2020-10-12 14:20:30,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 14:20:30,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:20:30,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 282 [2020-10-12 14:20:30,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:30,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:30,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:30,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:30,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:30,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:30,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 14:20:30,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:30,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:20:30,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:30,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:30,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:31,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:31,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-12 14:20:31,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:31,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-12 14:20:31,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:20:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-12 14:20:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 14:20:31,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [594931714] [2020-10-12 14:20:31,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:31,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:20:31,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148614326] [2020-10-12 14:20:31,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 14:20:31,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:31,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 14:20:31,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:20:31,815 INFO L87 Difference]: Start difference. First operand 1008 states and 1253 transitions. Second operand 8 states. [2020-10-12 14:20:41,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:41,138 INFO L93 Difference]: Finished difference Result 2410 states and 3135 transitions. [2020-10-12 14:20:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:20:41,139 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 290 [2020-10-12 14:20:41,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:41,149 INFO L225 Difference]: With dead ends: 2410 [2020-10-12 14:20:41,149 INFO L226 Difference]: Without dead ends: 1674 [2020-10-12 14:20:41,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:20:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2020-10-12 14:20:41,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1645. [2020-10-12 14:20:41,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1645 states. [2020-10-12 14:20:41,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 2103 transitions. [2020-10-12 14:20:41,211 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 2103 transitions. Word has length 290 [2020-10-12 14:20:41,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:41,213 INFO L479 AbstractCegarLoop]: Abstraction has 1645 states and 2103 transitions. [2020-10-12 14:20:41,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 14:20:41,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 2103 transitions. [2020-10-12 14:20:41,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-10-12 14:20:41,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:41,220 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:41,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 14:20:41,221 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:41,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:41,221 INFO L82 PathProgramCache]: Analyzing trace with hash 714595421, now seen corresponding path program 1 times [2020-10-12 14:20:41,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:41,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244124364] [2020-10-12 14:20:41,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:41,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:41,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:44,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:44,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-12 14:20:44,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:20:44,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2730 [2020-10-12 14:20:44,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:44,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:44,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 366 [2020-10-12 14:20:44,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 14:20:44,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:44,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:44,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:44,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:44,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:44,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:44,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:20:44,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:44,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:44,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:44,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:44,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:44,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:44,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:44,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:20:44,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:44,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 14:20:44,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:44,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:44,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:20:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:44,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:44,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:44,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:20:44,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:44,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 14:20:44,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:44,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:44,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-12 14:20:44,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-12 14:20:44,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244124364] [2020-10-12 14:20:44,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:44,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:20:44,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466381062] [2020-10-12 14:20:44,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:20:44,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:44,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:20:44,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:20:44,831 INFO L87 Difference]: Start difference. First operand 1645 states and 2103 transitions. Second operand 5 states. [2020-10-12 14:20:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:20:50,641 INFO L93 Difference]: Finished difference Result 2996 states and 4078 transitions. [2020-10-12 14:20:50,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:20:50,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 407 [2020-10-12 14:20:50,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:20:50,658 INFO L225 Difference]: With dead ends: 2996 [2020-10-12 14:20:50,658 INFO L226 Difference]: Without dead ends: 1975 [2020-10-12 14:20:50,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:20:50,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2020-10-12 14:20:50,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1969. [2020-10-12 14:20:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1969 states. [2020-10-12 14:20:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2483 transitions. [2020-10-12 14:20:50,713 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2483 transitions. Word has length 407 [2020-10-12 14:20:50,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:20:50,714 INFO L479 AbstractCegarLoop]: Abstraction has 1969 states and 2483 transitions. [2020-10-12 14:20:50,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:20:50,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2483 transitions. [2020-10-12 14:20:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-12 14:20:50,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:20:50,722 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:20:50,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 14:20:50,722 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:20:50,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:20:50,723 INFO L82 PathProgramCache]: Analyzing trace with hash 789936885, now seen corresponding path program 1 times [2020-10-12 14:20:50,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:20:50,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240879642] [2020-10-12 14:20:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:20:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:50,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:51,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:52,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:52,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 424 [2020-10-12 14:20:52,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:20:52,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1868 [2020-10-12 14:20:52,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:52,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:20:52,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-12 14:20:52,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:52,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:20:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:52,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:52,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:52,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:20:52,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:52,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:20:52,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:20:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:52,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:20:52,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:52,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:20:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:53,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:53,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:20:53,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:53,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-12 14:20:53,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:20:53,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:20:53,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:20:53,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:20:53,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:20:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:20:53,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:20:53,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:20:53,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 14:20:53,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:20:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-12 14:20:53,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:20:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:20:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:20:53,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-12 14:20:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:20:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:20:53,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240879642] [2020-10-12 14:20:53,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:20:53,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:20:53,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020249676] [2020-10-12 14:20:53,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:20:53,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:20:53,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:20:53,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:20:53,723 INFO L87 Difference]: Start difference. First operand 1969 states and 2483 transitions. Second operand 7 states. [2020-10-12 14:21:03,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:03,428 INFO L93 Difference]: Finished difference Result 5266 states and 6903 transitions. [2020-10-12 14:21:03,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:21:03,429 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 412 [2020-10-12 14:21:03,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:03,445 INFO L225 Difference]: With dead ends: 5266 [2020-10-12 14:21:03,446 INFO L226 Difference]: Without dead ends: 3610 [2020-10-12 14:21:03,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:21:03,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2020-10-12 14:21:03,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 3575. [2020-10-12 14:21:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3575 states. [2020-10-12 14:21:03,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3575 states to 3575 states and 4278 transitions. [2020-10-12 14:21:03,544 INFO L78 Accepts]: Start accepts. Automaton has 3575 states and 4278 transitions. Word has length 412 [2020-10-12 14:21:03,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:03,545 INFO L479 AbstractCegarLoop]: Abstraction has 3575 states and 4278 transitions. [2020-10-12 14:21:03,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:21:03,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3575 states and 4278 transitions. [2020-10-12 14:21:03,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-12 14:21:03,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:03,554 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:03,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 14:21:03,554 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:03,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:03,555 INFO L82 PathProgramCache]: Analyzing trace with hash 291664599, now seen corresponding path program 1 times [2020-10-12 14:21:03,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:03,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227861335] [2020-10-12 14:21:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:03,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:03,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:06,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:06,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-12 14:21:06,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:21:06,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2373 [2020-10-12 14:21:06,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:06,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-12 14:21:06,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-12 14:21:06,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:06,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:06,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:06,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:06,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:06,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:06,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 14:21:06,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:06,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:06,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:06,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:06,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:06,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:06,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:06,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-12 14:21:06,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:06,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359 [2020-10-12 14:21:06,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:06,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:06,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:06,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-12 14:21:06,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:06,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-12 14:21:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:07,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:07,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:07,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:21:07,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:07,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-12 14:21:07,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:07,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:21:07,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 14:21:07,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227861335] [2020-10-12 14:21:07,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:07,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:21:07,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246761395] [2020-10-12 14:21:07,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:21:07,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:07,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:21:07,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:21:07,797 INFO L87 Difference]: Start difference. First operand 3575 states and 4278 transitions. Second operand 7 states. [2020-10-12 14:21:15,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:15,689 INFO L93 Difference]: Finished difference Result 8781 states and 10870 transitions. [2020-10-12 14:21:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 14:21:15,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 438 [2020-10-12 14:21:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:15,714 INFO L225 Difference]: With dead ends: 8781 [2020-10-12 14:21:15,714 INFO L226 Difference]: Without dead ends: 5519 [2020-10-12 14:21:15,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 14:21:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2020-10-12 14:21:15,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5480. [2020-10-12 14:21:15,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5480 states. [2020-10-12 14:21:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 6351 transitions. [2020-10-12 14:21:15,869 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 6351 transitions. Word has length 438 [2020-10-12 14:21:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:15,870 INFO L479 AbstractCegarLoop]: Abstraction has 5480 states and 6351 transitions. [2020-10-12 14:21:15,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:21:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 6351 transitions. [2020-10-12 14:21:15,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-12 14:21:15,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:15,880 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:15,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 14:21:15,881 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:15,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:15,881 INFO L82 PathProgramCache]: Analyzing trace with hash -27994721, now seen corresponding path program 1 times [2020-10-12 14:21:15,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:15,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568294657] [2020-10-12 14:21:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:16,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:16,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 462 [2020-10-12 14:21:16,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:16,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 930 [2020-10-12 14:21:16,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:16,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:21:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 14:21:16,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:17,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:17,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:17,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:17,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:17,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:17,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:21:17,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:17,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:17,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:17,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:17,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:17,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:21:17,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:17,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 14:21:17,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:17,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:17,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:17,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:21:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:17,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:17,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:17,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:21:17,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:17,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-12 14:21:17,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:17,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:21:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-12 14:21:17,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568294657] [2020-10-12 14:21:17,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:17,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:21:17,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559003513] [2020-10-12 14:21:17,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:21:17,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:17,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:21:17,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:21:17,710 INFO L87 Difference]: Start difference. First operand 5480 states and 6351 transitions. Second operand 5 states. [2020-10-12 14:21:24,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:24,460 INFO L93 Difference]: Finished difference Result 11376 states and 13590 transitions. [2020-10-12 14:21:24,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:21:24,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 450 [2020-10-12 14:21:24,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:24,494 INFO L225 Difference]: With dead ends: 11376 [2020-10-12 14:21:24,494 INFO L226 Difference]: Without dead ends: 7143 [2020-10-12 14:21:24,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:21:24,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7143 states. [2020-10-12 14:21:24,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7143 to 6810. [2020-10-12 14:21:24,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6810 states. [2020-10-12 14:21:24,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6810 states to 6810 states and 8065 transitions. [2020-10-12 14:21:24,670 INFO L78 Accepts]: Start accepts. Automaton has 6810 states and 8065 transitions. Word has length 450 [2020-10-12 14:21:24,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:24,672 INFO L479 AbstractCegarLoop]: Abstraction has 6810 states and 8065 transitions. [2020-10-12 14:21:24,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:21:24,672 INFO L276 IsEmpty]: Start isEmpty. Operand 6810 states and 8065 transitions. [2020-10-12 14:21:24,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2020-10-12 14:21:24,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:24,679 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:24,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 14:21:24,679 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:24,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:24,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1456218421, now seen corresponding path program 1 times [2020-10-12 14:21:24,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:24,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634189866] [2020-10-12 14:21:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:24,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:25,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:26,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:26,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 498 [2020-10-12 14:21:26,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:21:26,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1918 [2020-10-12 14:21:26,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:26,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 14:21:26,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 14:21:26,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 480 [2020-10-12 14:21:26,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:26,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:26,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:26,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:26,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 14:21:26,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:26,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 14:21:26,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:27,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:27,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:27,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:21:27,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:27,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-12 14:21:27,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:27,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:27,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 287 [2020-10-12 14:21:27,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:27,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:21:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:27,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:27,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:27,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-12 14:21:27,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:27,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-12 14:21:27,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:21:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:27,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-12 14:21:27,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 31 proven. 204 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 14:21:28,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634189866] [2020-10-12 14:21:28,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:28,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 14:21:28,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885709888] [2020-10-12 14:21:28,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 14:21:28,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:28,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 14:21:28,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 14:21:28,122 INFO L87 Difference]: Start difference. First operand 6810 states and 8065 transitions. Second operand 9 states. [2020-10-12 14:21:38,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:38,169 INFO L93 Difference]: Finished difference Result 12549 states and 15441 transitions. [2020-10-12 14:21:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 14:21:38,171 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 486 [2020-10-12 14:21:38,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:38,205 INFO L225 Difference]: With dead ends: 12549 [2020-10-12 14:21:38,206 INFO L226 Difference]: Without dead ends: 6900 [2020-10-12 14:21:38,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-12 14:21:38,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6900 states. [2020-10-12 14:21:38,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6900 to 6515. [2020-10-12 14:21:38,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6515 states. [2020-10-12 14:21:38,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6515 states to 6515 states and 7717 transitions. [2020-10-12 14:21:38,368 INFO L78 Accepts]: Start accepts. Automaton has 6515 states and 7717 transitions. Word has length 486 [2020-10-12 14:21:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:38,369 INFO L479 AbstractCegarLoop]: Abstraction has 6515 states and 7717 transitions. [2020-10-12 14:21:38,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 14:21:38,369 INFO L276 IsEmpty]: Start isEmpty. Operand 6515 states and 7717 transitions. [2020-10-12 14:21:38,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2020-10-12 14:21:38,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:38,375 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:38,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 14:21:38,376 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:38,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:38,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1847957821, now seen corresponding path program 1 times [2020-10-12 14:21:38,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:38,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675305857] [2020-10-12 14:21:38,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:38,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:38,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:39,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:41,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:41,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:41,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 536 [2020-10-12 14:21:41,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:21:41,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3492 [2020-10-12 14:21:41,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:21:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:21:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-12 14:21:41,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:42,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:42,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:42,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:42,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:42,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:42,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:21:42,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:42,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:42,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:42,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:42,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:42,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:42,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:42,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:42,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:21:42,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:42,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:21:42,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:42,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:42,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:42,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:42,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:21:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:42,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:42,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:21:42,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:42,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 14:21:42,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:42,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:42,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:42,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:21:42,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:42,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:21:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:42,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:42,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:42,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 14:21:42,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:21:42,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-12 14:21:42,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:42,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 14:21:42,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:42,686 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 232 proven. 47 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 14:21:42,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675305857] [2020-10-12 14:21:42,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:42,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:21:42,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798306929] [2020-10-12 14:21:42,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:21:42,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:42,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:21:42,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:21:42,689 INFO L87 Difference]: Start difference. First operand 6515 states and 7717 transitions. Second operand 7 states. [2020-10-12 14:21:52,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:21:52,592 INFO L93 Difference]: Finished difference Result 15124 states and 19315 transitions. [2020-10-12 14:21:52,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 14:21:52,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 522 [2020-10-12 14:21:52,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:21:52,631 INFO L225 Difference]: With dead ends: 15124 [2020-10-12 14:21:52,631 INFO L226 Difference]: Without dead ends: 8922 [2020-10-12 14:21:52,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:21:52,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8922 states. [2020-10-12 14:21:52,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8922 to 8777. [2020-10-12 14:21:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8777 states. [2020-10-12 14:21:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8777 states to 8777 states and 10357 transitions. [2020-10-12 14:21:52,885 INFO L78 Accepts]: Start accepts. Automaton has 8777 states and 10357 transitions. Word has length 522 [2020-10-12 14:21:52,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:21:52,886 INFO L479 AbstractCegarLoop]: Abstraction has 8777 states and 10357 transitions. [2020-10-12 14:21:52,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:21:52,887 INFO L276 IsEmpty]: Start isEmpty. Operand 8777 states and 10357 transitions. [2020-10-12 14:21:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-10-12 14:21:52,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:21:52,895 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:21:52,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 14:21:52,896 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:21:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:21:52,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1629005037, now seen corresponding path program 1 times [2020-10-12 14:21:52,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:21:52,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10962955] [2020-10-12 14:21:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:21:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:53,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:53,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:54,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:54,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:55,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:55,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-12 14:21:55,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 14:21:55,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2439 [2020-10-12 14:21:55,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 14:21:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:21:55,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-12 14:21:55,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:21:55,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:21:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:55,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:55,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:55,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:21:55,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:21:55,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:55,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:55,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:55,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:21:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:55,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:55,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:55,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:21:55,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:55,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 14:21:55,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:21:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:55,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:21:55,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:55,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:21:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:55,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:55,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:55,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:21:55,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:21:55,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:21:55,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:21:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:21:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:21:55,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:21:56,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:21:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:56,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:21:56,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:21:56,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 14:21:56,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:21:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-12 14:21:56,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:21:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:21:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:21:56,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-12 14:21:56,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:21:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 290 proven. 47 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-12 14:21:56,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10962955] [2020-10-12 14:21:56,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:21:56,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 14:21:56,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439167210] [2020-10-12 14:21:56,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 14:21:56,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:21:56,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 14:21:56,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:21:56,325 INFO L87 Difference]: Start difference. First operand 8777 states and 10357 transitions. Second operand 6 states. [2020-10-12 14:22:09,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:09,226 INFO L93 Difference]: Finished difference Result 18027 states and 22803 transitions. [2020-10-12 14:22:09,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 14:22:09,228 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 551 [2020-10-12 14:22:09,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:09,271 INFO L225 Difference]: With dead ends: 18027 [2020-10-12 14:22:09,272 INFO L226 Difference]: Without dead ends: 10808 [2020-10-12 14:22:09,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 14:22:09,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10808 states. [2020-10-12 14:22:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10808 to 10708. [2020-10-12 14:22:09,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10708 states. [2020-10-12 14:22:09,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10708 states to 10708 states and 12789 transitions. [2020-10-12 14:22:09,523 INFO L78 Accepts]: Start accepts. Automaton has 10708 states and 12789 transitions. Word has length 551 [2020-10-12 14:22:09,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:09,524 INFO L479 AbstractCegarLoop]: Abstraction has 10708 states and 12789 transitions. [2020-10-12 14:22:09,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 14:22:09,525 INFO L276 IsEmpty]: Start isEmpty. Operand 10708 states and 12789 transitions. [2020-10-12 14:22:09,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 579 [2020-10-12 14:22:09,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:09,536 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:09,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 14:22:09,537 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:09,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:09,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1428326122, now seen corresponding path program 1 times [2020-10-12 14:22:09,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:09,538 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65812729] [2020-10-12 14:22:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:09,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:10,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:11,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:12,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:12,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 592 [2020-10-12 14:22:12,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:22:12,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2927 [2020-10-12 14:22:12,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 539 [2020-10-12 14:22:12,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 14:22:12,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:12,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:12,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:12,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:12,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:12,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:12,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 14:22:12,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:12,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:12,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:12,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:12,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:22:12,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:12,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 14:22:12,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:12,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:12,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:12,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:22:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:12,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:12,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:12,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:22:12,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 14:22:12,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:12,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:22:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:13,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:13,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:13,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-12 14:22:13,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:13,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-12 14:22:13,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:13,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-12 14:22:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:13,389 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 141 proven. 3 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-10-12 14:22:13,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65812729] [2020-10-12 14:22:13,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:13,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:22:13,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681679132] [2020-10-12 14:22:13,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:22:13,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:13,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:22:13,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:22:13,393 INFO L87 Difference]: Start difference. First operand 10708 states and 12789 transitions. Second operand 5 states. [2020-10-12 14:22:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:21,164 INFO L93 Difference]: Finished difference Result 19884 states and 24077 transitions. [2020-10-12 14:22:21,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:22:21,167 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 578 [2020-10-12 14:22:21,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:21,203 INFO L225 Difference]: With dead ends: 19884 [2020-10-12 14:22:21,204 INFO L226 Difference]: Without dead ends: 10716 [2020-10-12 14:22:21,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:22:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10716 states. [2020-10-12 14:22:21,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10716 to 10706. [2020-10-12 14:22:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10706 states. [2020-10-12 14:22:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10706 states to 10706 states and 12760 transitions. [2020-10-12 14:22:21,434 INFO L78 Accepts]: Start accepts. Automaton has 10706 states and 12760 transitions. Word has length 578 [2020-10-12 14:22:21,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:21,436 INFO L479 AbstractCegarLoop]: Abstraction has 10706 states and 12760 transitions. [2020-10-12 14:22:21,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:22:21,436 INFO L276 IsEmpty]: Start isEmpty. Operand 10706 states and 12760 transitions. [2020-10-12 14:22:21,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2020-10-12 14:22:21,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:21,446 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:21,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 14:22:21,446 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:21,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:21,447 INFO L82 PathProgramCache]: Analyzing trace with hash -595841992, now seen corresponding path program 1 times [2020-10-12 14:22:21,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:21,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887083157] [2020-10-12 14:22:21,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:21,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:22,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:23,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:23,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 618 [2020-10-12 14:22:23,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 14:22:23,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1691 [2020-10-12 14:22:23,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-12 14:22:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-12 14:22:23,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:23,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:23,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:23,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:23,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:23,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:23,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:22:23,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:23,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:23,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:23,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:23,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:23,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:22:23,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:23,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 14:22:23,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:23,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:23,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:22:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:23,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:23,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:23,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:22:23,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:23,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-12 14:22:23,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:23,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:23,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:23,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-12 14:22:23,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:23,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:22:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:23,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:23,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:23,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-12 14:22:23,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:23,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 14:22:23,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:23,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-12 14:22:23,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:24,261 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 402 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-12 14:22:24,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887083157] [2020-10-12 14:22:24,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:24,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 14:22:24,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996881427] [2020-10-12 14:22:24,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 14:22:24,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:24,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 14:22:24,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 14:22:24,264 INFO L87 Difference]: Start difference. First operand 10706 states and 12760 transitions. Second operand 7 states. [2020-10-12 14:22:35,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:35,907 INFO L93 Difference]: Finished difference Result 24193 states and 30010 transitions. [2020-10-12 14:22:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 14:22:35,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 604 [2020-10-12 14:22:35,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:35,976 INFO L225 Difference]: With dead ends: 24193 [2020-10-12 14:22:35,976 INFO L226 Difference]: Without dead ends: 15045 [2020-10-12 14:22:36,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 14:22:36,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15045 states. [2020-10-12 14:22:36,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15045 to 14724. [2020-10-12 14:22:36,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14724 states. [2020-10-12 14:22:36,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14724 states to 14724 states and 17881 transitions. [2020-10-12 14:22:36,253 INFO L78 Accepts]: Start accepts. Automaton has 14724 states and 17881 transitions. Word has length 604 [2020-10-12 14:22:36,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:36,254 INFO L479 AbstractCegarLoop]: Abstraction has 14724 states and 17881 transitions. [2020-10-12 14:22:36,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 14:22:36,254 INFO L276 IsEmpty]: Start isEmpty. Operand 14724 states and 17881 transitions. [2020-10-12 14:22:36,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 691 [2020-10-12 14:22:36,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:36,266 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:36,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 14:22:36,267 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:36,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:36,267 INFO L82 PathProgramCache]: Analyzing trace with hash 297944739, now seen corresponding path program 1 times [2020-10-12 14:22:36,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:36,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698292547] [2020-10-12 14:22:36,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:36,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:37,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:38,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:41,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:41,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 706 [2020-10-12 14:22:41,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:22:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-12 14:22:41,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:41,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:41,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 653 [2020-10-12 14:22:41,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 14:22:41,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:41,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:41,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:41,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:41,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:41,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:41,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:22:41,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:41,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:41,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:41,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:41,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:41,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:41,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:41,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:22:41,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:41,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-12 14:22:41,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:41,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:41,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:22:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:41,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:41,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:41,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 14:22:41,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:41,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 14:22:41,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:41,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:41,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:41,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:41,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:41,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-12 14:22:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:41,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:41,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:41,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:22:41,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 14:22:41,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:41,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:41,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:42,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-12 14:22:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:42,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:42,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:42,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 14:22:42,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:42,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-12 14:22:42,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:42,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 14:22:42,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 189 proven. 4 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-10-12 14:22:42,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698292547] [2020-10-12 14:22:42,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:42,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:22:42,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831282000] [2020-10-12 14:22:42,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:22:42,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:42,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:22:42,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:22:42,294 INFO L87 Difference]: Start difference. First operand 14724 states and 17881 transitions. Second operand 5 states. [2020-10-12 14:22:51,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:22:51,389 INFO L93 Difference]: Finished difference Result 31925 states and 40405 transitions. [2020-10-12 14:22:51,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:22:51,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 690 [2020-10-12 14:22:51,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:22:51,440 INFO L225 Difference]: With dead ends: 31925 [2020-10-12 14:22:51,441 INFO L226 Difference]: Without dead ends: 18759 [2020-10-12 14:22:51,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:22:51,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18759 states. [2020-10-12 14:22:51,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18759 to 18745. [2020-10-12 14:22:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18745 states. [2020-10-12 14:22:51,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18745 states to 18745 states and 22386 transitions. [2020-10-12 14:22:51,781 INFO L78 Accepts]: Start accepts. Automaton has 18745 states and 22386 transitions. Word has length 690 [2020-10-12 14:22:51,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:22:51,782 INFO L479 AbstractCegarLoop]: Abstraction has 18745 states and 22386 transitions. [2020-10-12 14:22:51,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:22:51,782 INFO L276 IsEmpty]: Start isEmpty. Operand 18745 states and 22386 transitions. [2020-10-12 14:22:51,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2020-10-12 14:22:51,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:22:51,803 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:22:51,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 14:22:51,803 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:22:51,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:22:51,804 INFO L82 PathProgramCache]: Analyzing trace with hash -991567823, now seen corresponding path program 1 times [2020-10-12 14:22:51,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:22:51,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249317686] [2020-10-12 14:22:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:22:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:52,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:53,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:55,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:56,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:56,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:56,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 716 [2020-10-12 14:22:56,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 14:22:56,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-12 14:22:56,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 14:22:56,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-12 14:22:56,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-12 14:22:56,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:57,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:22:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:57,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:57,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:57,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:22:57,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:57,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 14:22:57,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:57,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:57,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:57,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:57,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:57,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:22:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:57,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:57,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:22:57,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:57,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-12 14:22:57,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:22:57,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:22:57,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-12 14:22:57,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:57,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:22:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:57,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:57,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:57,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-12 14:22:57,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 14:22:57,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 14:22:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:57,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-12 14:22:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-12 14:22:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:58,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:58,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:58,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-12 14:22:58,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:58,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-12 14:22:58,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:22:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 14:22:58,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-12 14:22:58,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:22:58,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-10-12 14:22:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:22:58,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:22:58,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:22:58,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 14:22:58,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:22:58,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-12 14:22:58,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:22:58,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:22:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-12 14:22:58,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:22:58,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:22:59,693 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 550 proven. 204 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-12 14:22:59,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249317686] [2020-10-12 14:22:59,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:22:59,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 14:22:59,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955475607] [2020-10-12 14:22:59,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 14:22:59,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:22:59,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 14:22:59,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-12 14:22:59,696 INFO L87 Difference]: Start difference. First operand 18745 states and 22386 transitions. Second operand 10 states. [2020-10-12 14:23:19,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:23:19,405 INFO L93 Difference]: Finished difference Result 45082 states and 54828 transitions. [2020-10-12 14:23:19,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 14:23:19,407 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 700 [2020-10-12 14:23:19,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:23:19,478 INFO L225 Difference]: With dead ends: 45082 [2020-10-12 14:23:19,479 INFO L226 Difference]: Without dead ends: 26650 [2020-10-12 14:23:19,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-10-12 14:23:19,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26650 states. [2020-10-12 14:23:19,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26650 to 26606. [2020-10-12 14:23:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26606 states. [2020-10-12 14:23:19,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26606 states to 26606 states and 31387 transitions. [2020-10-12 14:23:19,947 INFO L78 Accepts]: Start accepts. Automaton has 26606 states and 31387 transitions. Word has length 700 [2020-10-12 14:23:19,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:23:19,947 INFO L479 AbstractCegarLoop]: Abstraction has 26606 states and 31387 transitions. [2020-10-12 14:23:19,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 14:23:19,948 INFO L276 IsEmpty]: Start isEmpty. Operand 26606 states and 31387 transitions. [2020-10-12 14:23:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2020-10-12 14:23:19,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:23:19,965 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:23:19,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 14:23:19,965 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:23:19,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:23:19,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1013996309, now seen corresponding path program 1 times [2020-10-12 14:23:19,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:23:19,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901026339] [2020-10-12 14:23:19,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:23:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:20,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:21,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:22,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:22,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 743 [2020-10-12 14:23:22,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 14:23:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2824 [2020-10-12 14:23:22,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 14:23:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-12 14:23:22,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 14:23:22,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:23,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 14:23:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:23,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:23,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 14:23:23,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:23,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 14:23:23,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:23,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:23,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:23,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 14:23:23,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:23,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:23,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:23,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-12 14:23:23,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:23,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-12 14:23:23,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:23,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:23,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:23,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-12 14:23:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:23,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:23,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:23,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 14:23:23,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-12 14:23:23,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:23,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:23,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:23,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-12 14:23:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:23,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:23,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:23,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-12 14:23:23,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:23,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 14:23:23,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:23,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 14:23:23,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:23,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 14:23:23,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 14:23:23,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-12 14:23:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:23,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:23,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 14:23:23,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 14:23:23,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 14:23:23,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 14:23:23,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 14:23:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 14:23:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 14:23:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-12 14:23:23,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 14:23:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 189 proven. 4 refuted. 0 times theorem prover too weak. 654 trivial. 0 not checked. [2020-10-12 14:23:24,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901026339] [2020-10-12 14:23:24,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 14:23:24,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 14:23:24,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255259516] [2020-10-12 14:23:24,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 14:23:24,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 14:23:24,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 14:23:24,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 14:23:24,131 INFO L87 Difference]: Start difference. First operand 26606 states and 31387 transitions. Second operand 5 states. [2020-10-12 14:23:31,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 14:23:31,150 INFO L93 Difference]: Finished difference Result 55651 states and 66811 transitions. [2020-10-12 14:23:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 14:23:31,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 727 [2020-10-12 14:23:31,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 14:23:31,233 INFO L225 Difference]: With dead ends: 55651 [2020-10-12 14:23:31,233 INFO L226 Difference]: Without dead ends: 30912 [2020-10-12 14:23:31,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 14:23:31,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30912 states. [2020-10-12 14:23:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30912 to 30900. [2020-10-12 14:23:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30900 states. [2020-10-12 14:23:31,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30900 states to 30900 states and 36208 transitions. [2020-10-12 14:23:31,775 INFO L78 Accepts]: Start accepts. Automaton has 30900 states and 36208 transitions. Word has length 727 [2020-10-12 14:23:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 14:23:31,776 INFO L479 AbstractCegarLoop]: Abstraction has 30900 states and 36208 transitions. [2020-10-12 14:23:31,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 14:23:31,776 INFO L276 IsEmpty]: Start isEmpty. Operand 30900 states and 36208 transitions. [2020-10-12 14:23:31,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2020-10-12 14:23:31,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 14:23:31,794 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 14:23:31,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 14:23:31,794 INFO L427 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 14:23:31,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 14:23:31,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1632745170, now seen corresponding path program 1 times [2020-10-12 14:23:31,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 14:23:31,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031386551] [2020-10-12 14:23:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 14:23:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 14:23:32,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:32,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:33,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:34,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 14:23:34,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking...