/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:22:20,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:22:20,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:22:20,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:22:20,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:22:20,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:22:20,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:22:20,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:22:20,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:22:20,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:22:20,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:22:20,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:22:20,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:22:20,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:22:20,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:22:20,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:22:20,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:22:20,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:22:20,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:22:20,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:22:20,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:22:20,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:22:20,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:22:20,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:22:20,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:22:20,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:22:20,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:22:20,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:22:20,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:22:20,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:22:20,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:22:20,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:22:20,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:22:20,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:22:20,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:22:20,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:22:20,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:22:20,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:22:20,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:22:20,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:22:20,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:22:20,269 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:22:20,313 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:22:20,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:22:20,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:22:20,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:22:20,316 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:22:20,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:22:20,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:22:20,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:22:20,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:22:20,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:22:20,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:22:20,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:22:20,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:22:20,319 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:22:20,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:22:20,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:22:20,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:22:20,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:22:20,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:22:20,320 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:22:20,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:22:20,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:22:20,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:22:20,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:22:20,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:22:20,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:22:20,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:22:20,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:22:20,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:22:20,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:22:20,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:22:20,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:22:20,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:22:20,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:22:20,853 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:22:20,855 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label28.c [2020-09-24 18:22:20,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a833f3fce/9494d404e68049c0a221c703a6ad4b0b/FLAGd0359af8f [2020-09-24 18:22:21,606 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:22:21,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label28.c [2020-09-24 18:22:21,626 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a833f3fce/9494d404e68049c0a221c703a6ad4b0b/FLAGd0359af8f [2020-09-24 18:22:21,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a833f3fce/9494d404e68049c0a221c703a6ad4b0b [2020-09-24 18:22:21,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:22:21,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:22:21,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:21,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:22:21,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:22:21,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:21" (1/1) ... [2020-09-24 18:22:21,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:21, skipping insertion in model container [2020-09-24 18:22:21,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:22:21" (1/1) ... [2020-09-24 18:22:21,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:22:21,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:22:22,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:22,416 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:22:22,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:22:22,639 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:22:22,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:22 WrapperNode [2020-09-24 18:22:22,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:22:22,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:22:22,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:22:22,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:22:22,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:22" (1/1) ... [2020-09-24 18:22:22,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:22" (1/1) ... [2020-09-24 18:22:22,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:22" (1/1) ... [2020-09-24 18:22:22,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:22" (1/1) ... [2020-09-24 18:22:22,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:22" (1/1) ... [2020-09-24 18:22:22,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:22" (1/1) ... [2020-09-24 18:22:22,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:22" (1/1) ... [2020-09-24 18:22:22,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:22:22,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:22:22,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:22:22,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:22:22,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:22:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:22:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:22:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:22:22,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:22:22,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:22:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:22:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:22:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:22:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:22:22,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:22:22,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:22:24,214 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:22:24,214 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:22:24,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:24 BoogieIcfgContainer [2020-09-24 18:22:24,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:22:24,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:22:24,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:22:24,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:22:24,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:22:21" (1/3) ... [2020-09-24 18:22:24,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b057aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:24, skipping insertion in model container [2020-09-24 18:22:24,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:22:22" (2/3) ... [2020-09-24 18:22:24,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b057aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:22:24, skipping insertion in model container [2020-09-24 18:22:24,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:22:24" (3/3) ... [2020-09-24 18:22:24,240 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label28.c [2020-09-24 18:22:24,252 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:22:24,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:22:24,294 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:22:24,341 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:22:24,342 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:22:24,343 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:22:24,343 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:22:24,343 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:22:24,343 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:22:24,343 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:22:24,344 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:22:24,386 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 18:22:24,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-24 18:22:24,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:24,413 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] [2020-09-24 18:22:24,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:24,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:24,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1105966209, now seen corresponding path program 1 times [2020-09-24 18:22:24,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:24,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413272231] [2020-09-24 18:22:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:25,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:25,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:26,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:27,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:27,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:29,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:29,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:29,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 18:22:29,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:22:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:22:29,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:22:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:22:29,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 18:22:29,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:22:30,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:30,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:30,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:30,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:30,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:22:30,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:30,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 18:22:30,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:22:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:30,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413272231] [2020-09-24 18:22:30,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:22:30,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:22:30,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640178897] [2020-09-24 18:22:30,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:22:30,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:30,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:22:30,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:22:30,269 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-24 18:22:32,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:32,607 INFO L93 Difference]: Finished difference Result 1205 states and 1651 transitions. [2020-09-24 18:22:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:22:32,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-24 18:22:32,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:32,633 INFO L225 Difference]: With dead ends: 1205 [2020-09-24 18:22:32,634 INFO L226 Difference]: Without dead ends: 627 [2020-09-24 18:22:32,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:32,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2020-09-24 18:22:32,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 613. [2020-09-24 18:22:32,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-09-24 18:22:32,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 774 transitions. [2020-09-24 18:22:32,753 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 774 transitions. Word has length 150 [2020-09-24 18:22:32,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:32,754 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 774 transitions. [2020-09-24 18:22:32,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:22:32,754 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 774 transitions. [2020-09-24 18:22:32,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 18:22:32,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:32,762 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 18:22:32,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:22:32,763 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:32,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:32,763 INFO L82 PathProgramCache]: Analyzing trace with hash -513304486, now seen corresponding path program 1 times [2020-09-24 18:22:32,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:32,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281162315] [2020-09-24 18:22:32,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:32,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:32,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:33,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:34,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:35,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:36,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:37,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:37,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 18:22:37,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:22:37,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 18:22:37,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:22:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-24 18:22:37,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:37,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:37,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:37,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:37,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:37,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:37,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:22:37,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:37,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:37,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:38,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:38,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 18:22:38,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:38,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:22:38,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:22:38,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:38,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281162315] [2020-09-24 18:22:38,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:38,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:38,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923469685] [2020-09-24 18:22:38,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:38,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:38,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:38,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:38,053 INFO L87 Difference]: Start difference. First operand 613 states and 774 transitions. Second operand 5 states. [2020-09-24 18:22:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:40,362 INFO L93 Difference]: Finished difference Result 1627 states and 2137 transitions. [2020-09-24 18:22:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:40,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-09-24 18:22:40,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:40,382 INFO L225 Difference]: With dead ends: 1627 [2020-09-24 18:22:40,383 INFO L226 Difference]: Without dead ends: 1036 [2020-09-24 18:22:40,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:40,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-09-24 18:22:40,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 923. [2020-09-24 18:22:40,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2020-09-24 18:22:40,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1195 transitions. [2020-09-24 18:22:40,459 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1195 transitions. Word has length 176 [2020-09-24 18:22:40,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:40,461 INFO L479 AbstractCegarLoop]: Abstraction has 923 states and 1195 transitions. [2020-09-24 18:22:40,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1195 transitions. [2020-09-24 18:22:40,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-24 18:22:40,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:40,468 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:40,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:22:40,469 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:40,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:40,469 INFO L82 PathProgramCache]: Analyzing trace with hash 771207420, now seen corresponding path program 1 times [2020-09-24 18:22:40,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:40,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [560959955] [2020-09-24 18:22:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:40,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:40,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:41,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:43,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:43,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:44,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:45,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:45,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 18:22:45,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:22:45,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:22:45,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:45,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 18:22:45,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 18:22:45,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:45,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:45,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:45,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:45,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:45,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:45,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:22:45,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:22:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:45,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:22:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:45,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:45,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:45,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:45,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 18:22:45,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 18:22:45,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 18:22:45,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:45,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [560959955] [2020-09-24 18:22:45,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:22:45,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:22:45,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029508054] [2020-09-24 18:22:45,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:22:45,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:45,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:22:45,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:22:45,912 INFO L87 Difference]: Start difference. First operand 923 states and 1195 transitions. Second operand 5 states. [2020-09-24 18:22:48,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:48,025 INFO L93 Difference]: Finished difference Result 2451 states and 3330 transitions. [2020-09-24 18:22:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:22:48,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-09-24 18:22:48,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:48,045 INFO L225 Difference]: With dead ends: 2451 [2020-09-24 18:22:48,046 INFO L226 Difference]: Without dead ends: 1550 [2020-09-24 18:22:48,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:22:48,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2020-09-24 18:22:48,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 1230. [2020-09-24 18:22:48,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1230 states. [2020-09-24 18:22:48,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1554 transitions. [2020-09-24 18:22:48,131 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1554 transitions. Word has length 184 [2020-09-24 18:22:48,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:48,131 INFO L479 AbstractCegarLoop]: Abstraction has 1230 states and 1554 transitions. [2020-09-24 18:22:48,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:22:48,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1554 transitions. [2020-09-24 18:22:48,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-24 18:22:48,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:48,143 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:48,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:22:48,143 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:48,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:48,144 INFO L82 PathProgramCache]: Analyzing trace with hash 126293906, now seen corresponding path program 1 times [2020-09-24 18:22:48,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:48,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763834500] [2020-09-24 18:22:48,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:49,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:50,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:50,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:52,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:52,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:53,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:53,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-24 18:22:53,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:22:53,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 18:22:53,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:22:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:22:53,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 18:22:53,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:22:53,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:22:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:53,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:53,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:53,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:22:53,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:53,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:22:53,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:22:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:22:53,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:22:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:53,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:22:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:53,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:22:53,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:22:53,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:22:53,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 18:22:53,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:22:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:22:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:22:53,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:22:53,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:22:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:22:53,630 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763834500] [2020-09-24 18:22:53,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:22:53,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 18:22:53,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438523240] [2020-09-24 18:22:53,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:22:53,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:22:53,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:22:53,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:22:53,634 INFO L87 Difference]: Start difference. First operand 1230 states and 1554 transitions. Second operand 8 states. [2020-09-24 18:22:55,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:22:55,304 INFO L93 Difference]: Finished difference Result 2481 states and 3198 transitions. [2020-09-24 18:22:55,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:22:55,305 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 201 [2020-09-24 18:22:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:22:55,319 INFO L225 Difference]: With dead ends: 2481 [2020-09-24 18:22:55,319 INFO L226 Difference]: Without dead ends: 1273 [2020-09-24 18:22:55,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:22:55,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-09-24 18:22:55,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1224. [2020-09-24 18:22:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1224 states. [2020-09-24 18:22:55,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1474 transitions. [2020-09-24 18:22:55,381 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1474 transitions. Word has length 201 [2020-09-24 18:22:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:22:55,382 INFO L479 AbstractCegarLoop]: Abstraction has 1224 states and 1474 transitions. [2020-09-24 18:22:55,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:22:55,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1474 transitions. [2020-09-24 18:22:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-24 18:22:55,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:22:55,389 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:22:55,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:22:55,390 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:22:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:22:55,391 INFO L82 PathProgramCache]: Analyzing trace with hash 457164531, now seen corresponding path program 1 times [2020-09-24 18:22:55,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:22:55,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513155310] [2020-09-24 18:22:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:22:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:22:55,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:55,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:55,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:55,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:22:59,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:00,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:00,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-24 18:23:00,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:23:00,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 18:23:00,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 18:23:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 18:23:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:00,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:00,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:00,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:00,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:00,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 18:23:00,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:00,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:23:00,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:00,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:00,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:00,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:23:00,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:00,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:23:00,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:00,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:00,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:00,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 18:23:00,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 18:23:00,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 18:23:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:00,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:00,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:00,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:23:00,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:00,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-24 18:23:00,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:00,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:00,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:00,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 18:23:00,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:00,862 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:00,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513155310] [2020-09-24 18:23:00,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:00,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:00,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132080903] [2020-09-24 18:23:00,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:00,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:00,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:00,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:00,865 INFO L87 Difference]: Start difference. First operand 1224 states and 1474 transitions. Second operand 7 states. [2020-09-24 18:23:03,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:23:03,380 INFO L93 Difference]: Finished difference Result 3167 states and 3908 transitions. [2020-09-24 18:23:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:23:03,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-09-24 18:23:03,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:23:03,396 INFO L225 Difference]: With dead ends: 3167 [2020-09-24 18:23:03,396 INFO L226 Difference]: Without dead ends: 1965 [2020-09-24 18:23:03,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:23:03,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2020-09-24 18:23:03,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1725. [2020-09-24 18:23:03,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2020-09-24 18:23:03,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 1984 transitions. [2020-09-24 18:23:03,485 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 1984 transitions. Word has length 225 [2020-09-24 18:23:03,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:23:03,486 INFO L479 AbstractCegarLoop]: Abstraction has 1725 states and 1984 transitions. [2020-09-24 18:23:03,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:23:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 1984 transitions. [2020-09-24 18:23:03,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-24 18:23:03,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:23:03,498 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:23:03,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:23:03,498 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:23:03,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:23:03,499 INFO L82 PathProgramCache]: Analyzing trace with hash 988930165, now seen corresponding path program 1 times [2020-09-24 18:23:03,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:23:03,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989646121] [2020-09-24 18:23:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:23:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:03,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:03,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:04,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:05,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:08,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-24 18:23:08,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:23:08,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 18:23:08,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 18:23:08,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:23:08,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:08,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:23:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:08,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:23:08,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:08,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:23:08,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:23:08,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:08,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:23:08,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:08,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:23:08,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:08,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:08,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 18:23:08,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:23:08,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:23:08,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:08,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:23:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:23:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:23:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:08,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 18:23:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:23:08,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:08,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:23:09,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:23:09,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 18:23:09,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:23:09,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-24 18:23:09,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:23:09,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:23:09,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:23:09,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 18:23:09,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:23:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:23:09,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989646121] [2020-09-24 18:23:09,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:23:09,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:23:09,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510268002] [2020-09-24 18:23:09,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:23:09,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:23:09,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:23:09,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:23:09,164 INFO L87 Difference]: Start difference. First operand 1725 states and 1984 transitions. Second operand 7 states.