/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/Problem03_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 11:16:05,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 11:16:05,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 11:16:05,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 11:16:05,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 11:16:05,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 11:16:05,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 11:16:05,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 11:16:05,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 11:16:05,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 11:16:05,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 11:16:05,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 11:16:05,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 11:16:05,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 11:16:05,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 11:16:05,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 11:16:05,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 11:16:05,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 11:16:05,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 11:16:05,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 11:16:05,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 11:16:05,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 11:16:05,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 11:16:05,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 11:16:05,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 11:16:05,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 11:16:05,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 11:16:05,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 11:16:05,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 11:16:05,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 11:16:05,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 11:16:05,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 11:16:05,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 11:16:05,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 11:16:05,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 11:16:05,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 11:16:05,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 11:16:05,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 11:16:05,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 11:16:05,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 11:16:05,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 11:16:05,298 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 11:16:05,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 11:16:05,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 11:16:05,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 11:16:05,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 11:16:05,345 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 11:16:05,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 11:16:05,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 11:16:05,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 11:16:05,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 11:16:05,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 11:16:05,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 11:16:05,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 11:16:05,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 11:16:05,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 11:16:05,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 11:16:05,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 11:16:05,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 11:16:05,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 11:16:05,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 11:16:05,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 11:16:05,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 11:16:05,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 11:16:05,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 11:16:05,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 11:16:05,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 11:16:05,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 11:16:05,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 11:16:05,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 11:16:05,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 11:16:05,354 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 11:16:05,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 11:16:05,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 11:16:05,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 11:16:05,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 11:16:05,654 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 11:16:05,655 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01.c [2020-10-12 11:16:05,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d495d57b5/7519e3d6562943ed9230a6cb99bc3e99/FLAGe65b66f50 [2020-10-12 11:16:06,391 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 11:16:06,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label01.c [2020-10-12 11:16:06,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d495d57b5/7519e3d6562943ed9230a6cb99bc3e99/FLAGe65b66f50 [2020-10-12 11:16:06,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d495d57b5/7519e3d6562943ed9230a6cb99bc3e99 [2020-10-12 11:16:06,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 11:16:06,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 11:16:06,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 11:16:06,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 11:16:06,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 11:16:06,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:16:06" (1/1) ... [2020-10-12 11:16:06,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@530778a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:06, skipping insertion in model container [2020-10-12 11:16:06,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 11:16:06" (1/1) ... [2020-10-12 11:16:06,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 11:16:06,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 11:16:07,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:16:07,567 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 11:16:07,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 11:16:07,862 INFO L208 MainTranslator]: Completed translation [2020-10-12 11:16:07,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:07 WrapperNode [2020-10-12 11:16:07,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 11:16:07,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 11:16:07,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 11:16:07,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 11:16:07,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:07" (1/1) ... [2020-10-12 11:16:07,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:07" (1/1) ... [2020-10-12 11:16:07,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:07" (1/1) ... [2020-10-12 11:16:07,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:07" (1/1) ... [2020-10-12 11:16:07,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:07" (1/1) ... [2020-10-12 11:16:08,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:07" (1/1) ... [2020-10-12 11:16:08,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:07" (1/1) ... [2020-10-12 11:16:08,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 11:16:08,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 11:16:08,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 11:16:08,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 11:16:08,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:07" (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 11:16:08,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 11:16:08,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 11:16:08,127 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-12 11:16:08,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 11:16:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-12 11:16:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 11:16:08,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 11:16:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 11:16:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 11:16:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 11:16:08,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 11:16:10,059 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 11:16:10,059 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 11:16:10,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:16:10 BoogieIcfgContainer [2020-10-12 11:16:10,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 11:16:10,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 11:16:10,068 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 11:16:10,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 11:16:10,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 11:16:06" (1/3) ... [2020-10-12 11:16:10,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f8baf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:16:10, skipping insertion in model container [2020-10-12 11:16:10,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 11:16:07" (2/3) ... [2020-10-12 11:16:10,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61f8baf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 11:16:10, skipping insertion in model container [2020-10-12 11:16:10,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 11:16:10" (3/3) ... [2020-10-12 11:16:10,075 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label01.c [2020-10-12 11:16:10,086 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 11:16:10,095 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 11:16:10,109 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 11:16:10,139 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 11:16:10,140 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 11:16:10,140 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 11:16:10,140 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 11:16:10,141 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 11:16:10,141 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 11:16:10,141 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 11:16:10,141 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 11:16:10,176 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2020-10-12 11:16:10,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-12 11:16:10,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:16:10,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:16:10,197 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:16:10,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:16:10,202 INFO L82 PathProgramCache]: Analyzing trace with hash 728894733, now seen corresponding path program 1 times [2020-10-12 11:16:10,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:16:10,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033937460] [2020-10-12 11:16:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:16:10,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:10,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:11,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:15,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:15,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 11:16:15,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:16:15,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4524 [2020-10-12 11:16:15,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:15,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 11:16:15,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:16:15,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-12 11:16:15,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:16:16,249 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-12 11:16:16,438 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2020-10-12 11:16:16,690 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2020-10-12 11:16:17,022 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2020-10-12 11:16:17,300 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 91 [2020-10-12 11:16:17,754 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 87 [2020-10-12 11:16:18,150 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 80 [2020-10-12 11:16:18,360 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-10-12 11:16:18,535 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-10-12 11:16:18,821 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:16:18,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:16:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:18,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:18,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:18,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:16:18,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:18,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 11:16:18,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:16:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:16:18,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:16:18,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:16:19,820 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 11:16:19,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033937460] [2020-10-12 11:16:19,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 11:16:19,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 11:16:19,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198571889] [2020-10-12 11:16:19,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 11:16:19,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:16:19,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 11:16:19,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-12 11:16:19,849 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 13 states. [2020-10-12 11:16:20,413 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-12 11:16:21,469 WARN L193 SmtUtils]: Spent 913.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 198 [2020-10-12 11:16:22,485 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 198 [2020-10-12 11:16:23,668 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 263 DAG size of output: 220 [2020-10-12 11:16:24,969 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 275 DAG size of output: 216 [2020-10-12 11:16:26,491 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 278 DAG size of output: 213 [2020-10-12 11:16:28,116 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 284 DAG size of output: 210 [2020-10-12 11:16:31,817 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 284 DAG size of output: 204 [2020-10-12 11:16:33,240 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 286 DAG size of output: 199 [2020-10-12 11:16:36,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:16:36,267 INFO L93 Difference]: Finished difference Result 737 states and 1287 transitions. [2020-10-12 11:16:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:16:36,272 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 192 [2020-10-12 11:16:36,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:16:36,288 INFO L225 Difference]: With dead ends: 737 [2020-10-12 11:16:36,289 INFO L226 Difference]: Without dead ends: 364 [2020-10-12 11:16:36,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-10-12 11:16:36,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-12 11:16:36,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 364. [2020-10-12 11:16:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2020-10-12 11:16:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 524 transitions. [2020-10-12 11:16:36,371 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 524 transitions. Word has length 192 [2020-10-12 11:16:36,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:16:36,372 INFO L479 AbstractCegarLoop]: Abstraction has 364 states and 524 transitions. [2020-10-12 11:16:36,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 11:16:36,372 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 524 transitions. [2020-10-12 11:16:36,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-12 11:16:36,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:16:36,379 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 11:16:36,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 11:16:36,379 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:16:36,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:16:36,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1067437754, now seen corresponding path program 1 times [2020-10-12 11:16:36,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:16:36,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800026975] [2020-10-12 11:16:36,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:16:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:36,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:36,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:39,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:41,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:41,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-12 11:16:41,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:16:41,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4908 [2020-10-12 11:16:41,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 11:16:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:16:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-12 11:16:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:16:42,850 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2020-10-12 11:16:43,085 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 70 [2020-10-12 11:16:43,493 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 91 [2020-10-12 11:16:43,962 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 93 [2020-10-12 11:16:44,416 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 82 [2020-10-12 11:16:44,828 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 73 [2020-10-12 11:16:45,120 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 57 [2020-10-12 11:16:45,277 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:16:45,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:16:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:45,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:45,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:45,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:16:45,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:45,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 11:16:45,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:16:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:16:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:16:45,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:16:45,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:16:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:16:45,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:16:45,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:16:45,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:16:45,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:16:45,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-12 11:16:45,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:16:45,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:16:45,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:16:45,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:16:45,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:16:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 11:16:46,203 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800026975] [2020-10-12 11:16:46,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:16:46,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 11:16:46,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786831914] [2020-10-12 11:16:46,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 11:16:46,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:16:46,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 11:16:46,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:16:46,207 INFO L87 Difference]: Start difference. First operand 364 states and 524 transitions. Second operand 16 states. [2020-10-12 11:16:46,499 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-12 11:16:47,202 WARN L193 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 91 [2020-10-12 11:16:47,498 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-10-12 11:16:47,833 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 92 [2020-10-12 11:16:48,535 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 167 [2020-10-12 11:16:49,252 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 175 [2020-10-12 11:16:50,471 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 220 DAG size of output: 175 [2020-10-12 11:16:52,349 WARN L193 SmtUtils]: Spent 1000.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 174 [2020-10-12 11:16:54,781 WARN L193 SmtUtils]: Spent 999.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 173 [2020-10-12 11:16:57,622 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 172 [2020-10-12 11:16:58,509 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 170 [2020-10-12 11:17:00,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:00,478 INFO L93 Difference]: Finished difference Result 756 states and 1211 transitions. [2020-10-12 11:17:00,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 11:17:00,481 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 203 [2020-10-12 11:17:00,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:00,487 INFO L225 Difference]: With dead ends: 756 [2020-10-12 11:17:00,487 INFO L226 Difference]: Without dead ends: 513 [2020-10-12 11:17:00,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2020-10-12 11:17:00,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-12 11:17:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 509. [2020-10-12 11:17:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-10-12 11:17:00,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 676 transitions. [2020-10-12 11:17:00,524 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 676 transitions. Word has length 203 [2020-10-12 11:17:00,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:00,525 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 676 transitions. [2020-10-12 11:17:00,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 11:17:00,525 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 676 transitions. [2020-10-12 11:17:00,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-12 11:17:00,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:00,530 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 11:17:00,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 11:17:00,530 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:00,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:00,531 INFO L82 PathProgramCache]: Analyzing trace with hash -217130606, now seen corresponding path program 1 times [2020-10-12 11:17:00,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:00,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270885729] [2020-10-12 11:17:00,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:00,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:01,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:03,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:03,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-12 11:17:03,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:03,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2703 [2020-10-12 11:17:03,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:03,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:03,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:03,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 217 [2020-10-12 11:17:03,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:03,602 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:03,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:03,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:03,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:03,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 11:17:03,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:03,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:03,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:03,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:03,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:03,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:03,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:03,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 11:17:03,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:03,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:03,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-12 11:17:03,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270885729] [2020-10-12 11:17:03,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:03,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:17:03,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973229112] [2020-10-12 11:17:03,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 11:17:03,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:03,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 11:17:03,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:17:03,917 INFO L87 Difference]: Start difference. First operand 509 states and 676 transitions. Second operand 6 states. [2020-10-12 11:17:04,069 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:17:06,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:06,913 INFO L93 Difference]: Finished difference Result 1006 states and 1493 transitions. [2020-10-12 11:17:06,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 11:17:06,914 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-10-12 11:17:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:06,919 INFO L225 Difference]: With dead ends: 1006 [2020-10-12 11:17:06,919 INFO L226 Difference]: Without dead ends: 763 [2020-10-12 11:17:06,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:06,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2020-10-12 11:17:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 757. [2020-10-12 11:17:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2020-10-12 11:17:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1064 transitions. [2020-10-12 11:17:06,963 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1064 transitions. Word has length 213 [2020-10-12 11:17:06,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:06,964 INFO L479 AbstractCegarLoop]: Abstraction has 757 states and 1064 transitions. [2020-10-12 11:17:06,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 11:17:06,964 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1064 transitions. [2020-10-12 11:17:06,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-12 11:17:06,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:06,969 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:06,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 11:17:06,969 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:06,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:06,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1158750843, now seen corresponding path program 1 times [2020-10-12 11:17:06,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:06,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215685347] [2020-10-12 11:17:06,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:07,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:07,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:08,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:08,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-12 11:17:08,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:08,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1901 [2020-10-12 11:17:08,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:08,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:08,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:08,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 11:17:08,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:09,094 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:09,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:09,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:09,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:09,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:09,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:09,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:17:09,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:09,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:09,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 11:17:09,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:09,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:09,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:09,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:09,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:09,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-12 11:17:09,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:09,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:09,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:09,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:09,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:09,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:09,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 11:17:09,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:09,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 11:17:09,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:09,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:09,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:09,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 11:17:09,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:09,565 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 11:17:09,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215685347] [2020-10-12 11:17:09,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:09,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:17:09,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942134989] [2020-10-12 11:17:09,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:17:09,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:09,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:17:09,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:17:09,569 INFO L87 Difference]: Start difference. First operand 757 states and 1064 transitions. Second operand 9 states. [2020-10-12 11:17:09,785 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:13,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:13,417 INFO L93 Difference]: Finished difference Result 1767 states and 2685 transitions. [2020-10-12 11:17:13,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:17:13,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 222 [2020-10-12 11:17:13,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:13,427 INFO L225 Difference]: With dead ends: 1767 [2020-10-12 11:17:13,427 INFO L226 Difference]: Without dead ends: 1276 [2020-10-12 11:17:13,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:17:13,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1276 states. [2020-10-12 11:17:13,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1276 to 1254. [2020-10-12 11:17:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1254 states. [2020-10-12 11:17:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1850 transitions. [2020-10-12 11:17:13,480 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1850 transitions. Word has length 222 [2020-10-12 11:17:13,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:13,480 INFO L479 AbstractCegarLoop]: Abstraction has 1254 states and 1850 transitions. [2020-10-12 11:17:13,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:17:13,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1850 transitions. [2020-10-12 11:17:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 11:17:13,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:13,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:17:13,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 11:17:13,486 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:13,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:13,487 INFO L82 PathProgramCache]: Analyzing trace with hash -296300639, now seen corresponding path program 1 times [2020-10-12 11:17:13,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:13,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386187208] [2020-10-12 11:17:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:13,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:13,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:15,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:15,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-12 11:17:15,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1601 [2020-10-12 11:17:15,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:17:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:17:15,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:15,303 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:15,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:15,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:15,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:15,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:15,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:15,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:17:15,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:15,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:17:15,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:15,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:17:15,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:15,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:15,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:15,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:15,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:15,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:15,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:15,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 11:17:15,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:15,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:15,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:17:15,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:15,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:15,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:15,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:17:15,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 11:17:15,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:17:15,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:15,581 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 11:17:15,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386187208] [2020-10-12 11:17:15,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:15,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:17:15,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590311752] [2020-10-12 11:17:15,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:17:15,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:15,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:17:15,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:17:15,585 INFO L87 Difference]: Start difference. First operand 1254 states and 1850 transitions. Second operand 7 states. [2020-10-12 11:17:15,916 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:16,260 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:17:21,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:21,112 INFO L93 Difference]: Finished difference Result 3759 states and 5977 transitions. [2020-10-12 11:17:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 11:17:21,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 224 [2020-10-12 11:17:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:21,129 INFO L225 Difference]: With dead ends: 3759 [2020-10-12 11:17:21,130 INFO L226 Difference]: Without dead ends: 2771 [2020-10-12 11:17:21,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:17:21,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2771 states. [2020-10-12 11:17:21,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 2695. [2020-10-12 11:17:21,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2695 states. [2020-10-12 11:17:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 3814 transitions. [2020-10-12 11:17:21,230 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 3814 transitions. Word has length 224 [2020-10-12 11:17:21,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:21,231 INFO L479 AbstractCegarLoop]: Abstraction has 2695 states and 3814 transitions. [2020-10-12 11:17:21,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:17:21,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 3814 transitions. [2020-10-12 11:17:21,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-12 11:17:21,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:21,240 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 11:17:21,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 11:17:21,240 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:21,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:21,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1420361729, now seen corresponding path program 1 times [2020-10-12 11:17:21,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:21,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587270161] [2020-10-12 11:17:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:21,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:21,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:22,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:22,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-12 11:17:22,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:22,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1441 [2020-10-12 11:17:22,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:22,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-12 11:17:22,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 11:17:22,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:22,913 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:22,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:22,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:22,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:22,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:22,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:17:22,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:17:22,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:17:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:23,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:23,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:23,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:23,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:17:23,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:23,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:17:23,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:17:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:17:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:23,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:17:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:23,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:23,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:23,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 11:17:23,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:23,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 11:17:23,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:23,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 11:17:23,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:23,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 11:17:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:23,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:23,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:23,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:17:23,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 11:17:23,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:23,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:17:23,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:23,208 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-12 11:17:23,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587270161] [2020-10-12 11:17:23,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:23,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:17:23,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268633158] [2020-10-12 11:17:23,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:17:23,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:23,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:17:23,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:23,211 INFO L87 Difference]: Start difference. First operand 2695 states and 3814 transitions. Second operand 8 states. [2020-10-12 11:17:23,442 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:23,687 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:24,263 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:17:29,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:29,141 INFO L93 Difference]: Finished difference Result 7774 states and 11897 transitions. [2020-10-12 11:17:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 11:17:29,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-10-12 11:17:29,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:29,170 INFO L225 Difference]: With dead ends: 7774 [2020-10-12 11:17:29,171 INFO L226 Difference]: Without dead ends: 5345 [2020-10-12 11:17:29,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:17:29,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2020-10-12 11:17:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 5285. [2020-10-12 11:17:29,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5285 states. [2020-10-12 11:17:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 7146 transitions. [2020-10-12 11:17:29,343 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 7146 transitions. Word has length 226 [2020-10-12 11:17:29,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:29,344 INFO L479 AbstractCegarLoop]: Abstraction has 5285 states and 7146 transitions. [2020-10-12 11:17:29,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:17:29,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 7146 transitions. [2020-10-12 11:17:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 11:17:29,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:29,364 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:29,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 11:17:29,365 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:29,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:29,365 INFO L82 PathProgramCache]: Analyzing trace with hash 567006709, now seen corresponding path program 1 times [2020-10-12 11:17:29,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:29,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079981096] [2020-10-12 11:17:29,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:29,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:29,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:30,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:32,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:32,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-12 11:17:32,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:32,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3263 [2020-10-12 11:17:32,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:32,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:32,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:32,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:17:32,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:32,858 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:32,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:32,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:32,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:32,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:32,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 11:17:32,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:32,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:32,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:33,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:33,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:33,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:33,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:33,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:33,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:33,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 11:17:33,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:33,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:33,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:33,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:33,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:33,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:33,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:33,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 11:17:33,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:33,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 11:17:33,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:33,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:33,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 11:17:33,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:33,476 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 33 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:17:33,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079981096] [2020-10-12 11:17:33,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:33,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:17:33,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986526766] [2020-10-12 11:17:33,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:17:33,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:33,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:17:33,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:17:33,484 INFO L87 Difference]: Start difference. First operand 5285 states and 7146 transitions. Second operand 8 states. [2020-10-12 11:17:33,626 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:17:35,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:35,345 INFO L93 Difference]: Finished difference Result 10204 states and 13997 transitions. [2020-10-12 11:17:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 11:17:35,345 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2020-10-12 11:17:35,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:35,368 INFO L225 Difference]: With dead ends: 10204 [2020-10-12 11:17:35,369 INFO L226 Difference]: Without dead ends: 5185 [2020-10-12 11:17:35,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-12 11:17:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5185 states. [2020-10-12 11:17:35,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5185 to 5167. [2020-10-12 11:17:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5167 states. [2020-10-12 11:17:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 6704 transitions. [2020-10-12 11:17:35,504 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 6704 transitions. Word has length 230 [2020-10-12 11:17:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:35,505 INFO L479 AbstractCegarLoop]: Abstraction has 5167 states and 6704 transitions. [2020-10-12 11:17:35,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:17:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 6704 transitions. [2020-10-12 11:17:35,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-12 11:17:35,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:35,526 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:35,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 11:17:35,526 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:35,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:35,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1959864298, now seen corresponding path program 1 times [2020-10-12 11:17:35,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:35,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101195533] [2020-10-12 11:17:35,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:35,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:35,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:36,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:39,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:39,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-12 11:17:39,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4077 [2020-10-12 11:17:39,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:39,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:39,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:39,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 11:17:39,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:39,927 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:39,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:39,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:39,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:39,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:39,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:39,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 11:17:39,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:39,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:17:40,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:40,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:40,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:40,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:40,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:40,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:40,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 11:17:40,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:40,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:40,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:17:40,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:40,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:40,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:40,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:40,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:17:40,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 11:17:40,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:40,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 11:17:40,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 11:17:40,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101195533] [2020-10-12 11:17:40,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:40,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:17:40,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136796028] [2020-10-12 11:17:40,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:17:40,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:40,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:17:40,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:17:40,600 INFO L87 Difference]: Start difference. First operand 5167 states and 6704 transitions. Second operand 7 states. [2020-10-12 11:17:40,753 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:17:42,132 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:17:43,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:43,953 INFO L93 Difference]: Finished difference Result 12085 states and 15881 transitions. [2020-10-12 11:17:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:17:43,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 258 [2020-10-12 11:17:43,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:43,987 INFO L225 Difference]: With dead ends: 12085 [2020-10-12 11:17:43,988 INFO L226 Difference]: Without dead ends: 7635 [2020-10-12 11:17:43,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:17:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7635 states. [2020-10-12 11:17:44,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7635 to 7591. [2020-10-12 11:17:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7591 states. [2020-10-12 11:17:44,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7591 states to 7591 states and 9847 transitions. [2020-10-12 11:17:44,182 INFO L78 Accepts]: Start accepts. Automaton has 7591 states and 9847 transitions. Word has length 258 [2020-10-12 11:17:44,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:44,182 INFO L479 AbstractCegarLoop]: Abstraction has 7591 states and 9847 transitions. [2020-10-12 11:17:44,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:17:44,182 INFO L276 IsEmpty]: Start isEmpty. Operand 7591 states and 9847 transitions. [2020-10-12 11:17:44,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-12 11:17:44,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:44,203 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-12 11:17:44,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 11:17:44,204 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:44,204 INFO L82 PathProgramCache]: Analyzing trace with hash 276775109, now seen corresponding path program 1 times [2020-10-12 11:17:44,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:44,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785175991] [2020-10-12 11:17:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:44,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:44,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:47,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:49,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-12 11:17:49,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:17:49,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 11:17:49,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:49,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:17:49,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:17:49,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 11:17:49,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:49,439 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:49,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:49,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:49,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:49,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:49,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:17:49,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:49,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:17:49,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:49,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:49,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:49,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:17:49,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:49,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:17:49,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:17:49,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:49,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:17:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:49,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 11:17:49,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-12 11:17:49,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:49,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-12 11:17:49,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:49,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 11:17:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:49,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:49,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:49,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 11:17:49,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:49,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-12 11:17:49,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:17:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-12 11:17:49,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:17:49,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 84 proven. 35 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-12 11:17:49,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785175991] [2020-10-12 11:17:49,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:49,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:17:49,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942805947] [2020-10-12 11:17:49,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:17:49,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:49,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:17:49,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:17:49,900 INFO L87 Difference]: Start difference. First operand 7591 states and 9847 transitions. Second operand 7 states. [2020-10-12 11:17:50,050 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:17:51,678 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 11:17:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:53,336 INFO L93 Difference]: Finished difference Result 20837 states and 27907 transitions. [2020-10-12 11:17:53,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:17:53,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-12 11:17:53,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:53,386 INFO L225 Difference]: With dead ends: 20837 [2020-10-12 11:17:53,386 INFO L226 Difference]: Without dead ends: 13512 [2020-10-12 11:17:53,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:17:53,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13512 states. [2020-10-12 11:17:53,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13512 to 13388. [2020-10-12 11:17:53,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13388 states. [2020-10-12 11:17:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13388 states to 13388 states and 17438 transitions. [2020-10-12 11:17:53,698 INFO L78 Accepts]: Start accepts. Automaton has 13388 states and 17438 transitions. Word has length 280 [2020-10-12 11:17:53,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:17:53,699 INFO L479 AbstractCegarLoop]: Abstraction has 13388 states and 17438 transitions. [2020-10-12 11:17:53,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:17:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 13388 states and 17438 transitions. [2020-10-12 11:17:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-12 11:17:53,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:17:53,722 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:53,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 11:17:53,722 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:17:53,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:17:53,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1944623212, now seen corresponding path program 1 times [2020-10-12 11:17:53,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:17:53,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195922135] [2020-10-12 11:17:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:17:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:53,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:54,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:55,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:55,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-12 11:17:55,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 11:17:55,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1434 [2020-10-12 11:17:55,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-12 11:17:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-12 11:17:55,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:55,390 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:17:55,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:17:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:55,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:55,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:55,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:17:55,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:55,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:17:55,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:55,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:17:55,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:17:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:55,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:17:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:55,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:55,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:55,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:17:55,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:55,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 11:17:55,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:17:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:17:55,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 11:17:55,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:55,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:17:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:17:55,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:17:55,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:17:55,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-12 11:17:55,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:17:55,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-12 11:17:55,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:17:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:17:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:17:55,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-12 11:17:55,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:17:55,876 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 11:17:55,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195922135] [2020-10-12 11:17:55,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:17:55,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:17:55,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986393170] [2020-10-12 11:17:55,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:17:55,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:17:55,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:17:55,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:17:55,878 INFO L87 Difference]: Start difference. First operand 13388 states and 17438 transitions. Second operand 7 states. [2020-10-12 11:17:56,206 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:17:57,591 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-12 11:17:59,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:17:59,415 INFO L93 Difference]: Finished difference Result 35900 states and 49195 transitions. [2020-10-12 11:17:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 11:17:59,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-12 11:17:59,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:17:59,499 INFO L225 Difference]: With dead ends: 35900 [2020-10-12 11:17:59,499 INFO L226 Difference]: Without dead ends: 23222 [2020-10-12 11:17:59,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:17:59,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23222 states. [2020-10-12 11:18:00,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23222 to 22958. [2020-10-12 11:18:00,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22958 states. [2020-10-12 11:18:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22958 states to 22958 states and 29699 transitions. [2020-10-12 11:18:00,066 INFO L78 Accepts]: Start accepts. Automaton has 22958 states and 29699 transitions. Word has length 291 [2020-10-12 11:18:00,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:00,067 INFO L479 AbstractCegarLoop]: Abstraction has 22958 states and 29699 transitions. [2020-10-12 11:18:00,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:18:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 22958 states and 29699 transitions. [2020-10-12 11:18:00,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-12 11:18:00,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:00,102 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:00,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 11:18:00,102 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:00,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:00,103 INFO L82 PathProgramCache]: Analyzing trace with hash 267717028, now seen corresponding path program 1 times [2020-10-12 11:18:00,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:00,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440172891] [2020-10-12 11:18:00,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:00,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:00,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:02,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:03,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:03,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 307 [2020-10-12 11:18:03,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:18:03,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3309 [2020-10-12 11:18:03,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:03,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:03,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-12 11:18:03,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-12 11:18:03,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:03,689 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:03,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:03,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:03,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:03,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:03,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 11:18:03,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:03,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:03,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:03,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:03,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:03,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:18:03,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:18:03,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:18:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:03,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:18:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:18:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:03,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:04,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:04,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-12 11:18:04,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-12 11:18:04,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-12 11:18:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:04,155 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-12 11:18:04,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440172891] [2020-10-12 11:18:04,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:04,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:18:04,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179693279] [2020-10-12 11:18:04,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:18:04,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:04,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:18:04,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:18:04,157 INFO L87 Difference]: Start difference. First operand 22958 states and 29699 transitions. Second operand 5 states. [2020-10-12 11:18:04,298 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:06,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:06,720 INFO L93 Difference]: Finished difference Result 44810 states and 58238 transitions. [2020-10-12 11:18:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:18:06,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 295 [2020-10-12 11:18:06,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:06,781 INFO L225 Difference]: With dead ends: 44810 [2020-10-12 11:18:06,782 INFO L226 Difference]: Without dead ends: 22118 [2020-10-12 11:18:06,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:18:06,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22118 states. [2020-10-12 11:18:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22118 to 22038. [2020-10-12 11:18:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22038 states. [2020-10-12 11:18:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22038 states to 22038 states and 27380 transitions. [2020-10-12 11:18:07,182 INFO L78 Accepts]: Start accepts. Automaton has 22038 states and 27380 transitions. Word has length 295 [2020-10-12 11:18:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:07,183 INFO L479 AbstractCegarLoop]: Abstraction has 22038 states and 27380 transitions. [2020-10-12 11:18:07,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 11:18:07,183 INFO L276 IsEmpty]: Start isEmpty. Operand 22038 states and 27380 transitions. [2020-10-12 11:18:07,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-12 11:18:07,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:07,213 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:18:07,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 11:18:07,213 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:07,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:07,213 INFO L82 PathProgramCache]: Analyzing trace with hash 329679337, now seen corresponding path program 1 times [2020-10-12 11:18:07,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:07,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866941456] [2020-10-12 11:18:07,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:07,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:07,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:08,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:09,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:12,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:12,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-12 11:18:12,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:18:12,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4789 [2020-10-12 11:18:12,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 11:18:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-12 11:18:12,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:12,219 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:12,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:12,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:12,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:12,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:12,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:12,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 11:18:12,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:12,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:12,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:12,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:12,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:12,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 11:18:12,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:12,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 11:18:12,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:12,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:12,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 11:18:12,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:12,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-12 11:18:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:12,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:12,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:12,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 11:18:12,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:12,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 11:18:12,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:12,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:12,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:12,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 11:18:12,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 105 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:18:12,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866941456] [2020-10-12 11:18:12,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:12,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:18:12,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565483795] [2020-10-12 11:18:12,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:18:12,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:12,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:18:12,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:18:12,974 INFO L87 Difference]: Start difference. First operand 22038 states and 27380 transitions. Second operand 8 states. [2020-10-12 11:18:13,112 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:18:16,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:16,191 INFO L93 Difference]: Finished difference Result 63711 states and 82596 transitions. [2020-10-12 11:18:16,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 11:18:16,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 302 [2020-10-12 11:18:16,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:16,327 INFO L225 Difference]: With dead ends: 63711 [2020-10-12 11:18:16,327 INFO L226 Difference]: Without dead ends: 42408 [2020-10-12 11:18:16,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-12 11:18:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42408 states. [2020-10-12 11:18:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42408 to 41896. [2020-10-12 11:18:17,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41896 states. [2020-10-12 11:18:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41896 states to 41896 states and 52803 transitions. [2020-10-12 11:18:17,209 INFO L78 Accepts]: Start accepts. Automaton has 41896 states and 52803 transitions. Word has length 302 [2020-10-12 11:18:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:17,209 INFO L479 AbstractCegarLoop]: Abstraction has 41896 states and 52803 transitions. [2020-10-12 11:18:17,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:18:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 41896 states and 52803 transitions. [2020-10-12 11:18:17,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-10-12 11:18:17,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:17,235 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:17,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 11:18:17,235 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:17,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:17,236 INFO L82 PathProgramCache]: Analyzing trace with hash -868644279, now seen corresponding path program 1 times [2020-10-12 11:18:17,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:17,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623121424] [2020-10-12 11:18:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:17,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:17,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:18,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:21,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:22,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:22,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-10-12 11:18:22,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 11:18:22,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 11:18:22,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:18:22,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:22,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-12 11:18:22,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:22,470 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:22,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:22,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:22,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:22,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:22,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:22,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:18:22,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:22,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:22,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:22,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:22,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:22,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:22,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:22,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:22,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:18:22,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:22,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 11:18:22,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:22,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:22,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 11:18:22,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:22,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:18:22,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:22,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:22,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-12 11:18:22,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:22,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-12 11:18:22,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:22,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-12 11:18:22,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:22,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 11:18:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:22,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:22,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:22,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 11:18:22,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:22,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-12 11:18:22,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:22,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:22,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 11:18:22,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 105 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-12 11:18:22,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623121424] [2020-10-12 11:18:22,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:22,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-12 11:18:22,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081571905] [2020-10-12 11:18:22,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 11:18:22,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:22,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 11:18:22,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 11:18:22,994 INFO L87 Difference]: Start difference. First operand 41896 states and 52803 transitions. Second operand 7 states. [2020-10-12 11:18:23,152 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 11:18:26,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:26,909 INFO L93 Difference]: Finished difference Result 118859 states and 155773 transitions. [2020-10-12 11:18:26,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:18:26,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 304 [2020-10-12 11:18:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:27,185 INFO L225 Difference]: With dead ends: 118859 [2020-10-12 11:18:27,185 INFO L226 Difference]: Without dead ends: 77700 [2020-10-12 11:18:27,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:18:27,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77700 states. [2020-10-12 11:18:28,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77700 to 76962. [2020-10-12 11:18:28,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76962 states. [2020-10-12 11:18:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76962 states to 76962 states and 98039 transitions. [2020-10-12 11:18:28,650 INFO L78 Accepts]: Start accepts. Automaton has 76962 states and 98039 transitions. Word has length 304 [2020-10-12 11:18:28,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:28,651 INFO L479 AbstractCegarLoop]: Abstraction has 76962 states and 98039 transitions. [2020-10-12 11:18:28,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 11:18:28,651 INFO L276 IsEmpty]: Start isEmpty. Operand 76962 states and 98039 transitions. [2020-10-12 11:18:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-12 11:18:28,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:28,712 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:18:28,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 11:18:28,712 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:28,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:28,713 INFO L82 PathProgramCache]: Analyzing trace with hash -10662606, now seen corresponding path program 1 times [2020-10-12 11:18:28,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:28,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99145502] [2020-10-12 11:18:28,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:28,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:28,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:30,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:32,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:33,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:33,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-12 11:18:33,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 11:18:33,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-12 11:18:33,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 11:18:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:33,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-12 11:18:33,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:33,963 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:33,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:33,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:33,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:33,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:33,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:33,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:18:33,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:33,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:34,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:34,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:34,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:18:34,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:34,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-12 11:18:34,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:34,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:18:34,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:34,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:18:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:34,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:34,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:34,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-12 11:18:34,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:34,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 11:18:34,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:34,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:34,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-12 11:18:34,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:34,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-12 11:18:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:34,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:34,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:34,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-12 11:18:34,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:34,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 11:18:34,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:34,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:34,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:34,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-12 11:18:34,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 11:18:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 119 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-12 11:18:34,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99145502] [2020-10-12 11:18:34,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:34,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 11:18:34,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312412564] [2020-10-12 11:18:34,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 11:18:34,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:34,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 11:18:34,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-12 11:18:34,595 INFO L87 Difference]: Start difference. First operand 76962 states and 98039 transitions. Second operand 8 states. [2020-10-12 11:18:34,733 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-12 11:18:39,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:39,082 INFO L93 Difference]: Finished difference Result 230722 states and 304861 transitions. [2020-10-12 11:18:39,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 11:18:39,082 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 320 [2020-10-12 11:18:39,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:18:39,681 INFO L225 Difference]: With dead ends: 230722 [2020-10-12 11:18:39,681 INFO L226 Difference]: Without dead ends: 154733 [2020-10-12 11:18:39,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-12 11:18:39,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154733 states. [2020-10-12 11:18:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154733 to 153141. [2020-10-12 11:18:45,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153141 states. [2020-10-12 11:18:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153141 states to 153141 states and 194982 transitions. [2020-10-12 11:18:45,906 INFO L78 Accepts]: Start accepts. Automaton has 153141 states and 194982 transitions. Word has length 320 [2020-10-12 11:18:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:18:45,906 INFO L479 AbstractCegarLoop]: Abstraction has 153141 states and 194982 transitions. [2020-10-12 11:18:45,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 11:18:45,907 INFO L276 IsEmpty]: Start isEmpty. Operand 153141 states and 194982 transitions. [2020-10-12 11:18:45,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-12 11:18:45,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:18:45,981 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:18:45,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 11:18:45,982 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:18:45,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:18:45,982 INFO L82 PathProgramCache]: Analyzing trace with hash 567437240, now seen corresponding path program 1 times [2020-10-12 11:18:45,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:18:45,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711479272] [2020-10-12 11:18:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:18:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:46,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:46,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:47,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:49,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:49,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-12 11:18:49,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:18:49,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3496 [2020-10-12 11:18:49,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 11:18:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 11:18:49,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 288 [2020-10-12 11:18:49,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:49,793 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:18:49,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:18:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:49,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:49,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:49,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:18:49,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:49,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 11:18:49,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:18:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:18:49,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 11:18:49,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:49,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:18:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:49,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:50,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:50,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-12 11:18:50,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:50,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-12 11:18:50,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:50,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:18:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:50,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-12 11:18:50,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:50,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-12 11:18:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:18:50,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:18:50,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:18:50,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 11:18:50,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:18:50,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-12 11:18:50,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:18:50,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 11:18:50,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 11:18:50,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 11:18:50,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:18:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 20 proven. 124 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 11:18:50,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711479272] [2020-10-12 11:18:50,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:18:50,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 11:18:50,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288190359] [2020-10-12 11:18:50,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 11:18:50,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:18:50,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 11:18:50,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-12 11:18:50,944 INFO L87 Difference]: Start difference. First operand 153141 states and 194982 transitions. Second operand 9 states. [2020-10-12 11:18:51,088 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-12 11:18:52,721 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 139 [2020-10-12 11:18:56,628 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 11:18:59,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:18:59,268 INFO L93 Difference]: Finished difference Result 460413 states and 610083 transitions. [2020-10-12 11:18:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 11:18:59,268 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 319 [2020-10-12 11:18:59,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:00,322 INFO L225 Difference]: With dead ends: 460413 [2020-10-12 11:19:00,322 INFO L226 Difference]: Without dead ends: 305525 [2020-10-12 11:19:00,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-12 11:19:00,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305525 states. [2020-10-12 11:19:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305525 to 301057. [2020-10-12 11:19:09,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301057 states. [2020-10-12 11:19:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301057 states to 301057 states and 384101 transitions. [2020-10-12 11:19:10,143 INFO L78 Accepts]: Start accepts. Automaton has 301057 states and 384101 transitions. Word has length 319 [2020-10-12 11:19:10,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 11:19:10,144 INFO L479 AbstractCegarLoop]: Abstraction has 301057 states and 384101 transitions. [2020-10-12 11:19:10,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 11:19:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 301057 states and 384101 transitions. [2020-10-12 11:19:10,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-12 11:19:10,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 11:19:10,315 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-12 11:19:10,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 11:19:10,315 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 11:19:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 11:19:10,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1450363386, now seen corresponding path program 1 times [2020-10-12 11:19:10,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 11:19:10,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92894104] [2020-10-12 11:19:10,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 11:19:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:10,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:10,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:13,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:13,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-12 11:19:13,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 11:19:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3592 [2020-10-12 11:19:13,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 11:19:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-12 11:19:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-12 11:19:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:14,342 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-12 11:19:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 11:19:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:14,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:14,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:14,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 11:19:14,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:14,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 11:19:14,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:14,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:14,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:14,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:14,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:14,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-12 11:19:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:14,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:14,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 11:19:14,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:14,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 11:19:14,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:14,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:14,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:14,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:14,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 11:19:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:14,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:14,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:14,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 11:19:14,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 11:19:14,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 11:19:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:14,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 11:19:14,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:14,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 11:19:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 11:19:14,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 11:19:14,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 11:19:14,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 11:19:14,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 11:19:14,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 11:19:14,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 11:19:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 11:19:14,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 11:19:14,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-12 11:19:14,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 11:19:14,869 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 127 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-12 11:19:14,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92894104] [2020-10-12 11:19:14,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 11:19:14,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 11:19:14,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527133254] [2020-10-12 11:19:14,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 11:19:14,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 11:19:14,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 11:19:14,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 11:19:14,871 INFO L87 Difference]: Start difference. First operand 301057 states and 384101 transitions. Second operand 5 states. [2020-10-12 11:19:16,399 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-12 11:19:25,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 11:19:25,806 INFO L93 Difference]: Finished difference Result 602713 states and 768985 transitions. [2020-10-12 11:19:25,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 11:19:25,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 325 [2020-10-12 11:19:25,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 11:19:26,502 INFO L225 Difference]: With dead ends: 602713 [2020-10-12 11:19:26,502 INFO L226 Difference]: Without dead ends: 301773 [2020-10-12 11:19:26,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-12 11:19:26,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301773 states.