/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/Problem01_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:20:50,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:20:50,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:20:50,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:20:50,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:20:50,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:20:50,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:20:50,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:20:50,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:20:50,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:20:50,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:20:50,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:20:50,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:20:50,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:20:50,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:20:50,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:20:50,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:20:50,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:20:50,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:20:50,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:20:50,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:20:50,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:20:50,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:20:50,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:20:50,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:20:50,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:20:50,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:20:50,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:20:50,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:20:50,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:20:50,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:20:50,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:20:50,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:20:50,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:20:50,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:20:50,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:20:50,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:20:50,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:20:50,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:20:50,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:20:50,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:20:50,267 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 18:20:50,300 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:20:50,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:20:50,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:20:50,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:20:50,303 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:20:50,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:20:50,303 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:20:50,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:20:50,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:20:50,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:20:50,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:20:50,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:20:50,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:20:50,305 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:20:50,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:20:50,306 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:20:50,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:20:50,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:20:50,306 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:20:50,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:20:50,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:20:50,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:50,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:20:50,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:20:50,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:20:50,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:20:50,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:20:50,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:20:50,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:20:50,310 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 18:20:50,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:20:50,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:20:50,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:20:50,781 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:20:50,782 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:20:50,783 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-24 18:20:50,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0ba3c9ef/9f748b4bee054b0984fde393d159856c/FLAG61a391073 [2020-09-24 18:20:51,527 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:20:51,528 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-24 18:20:51,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0ba3c9ef/9f748b4bee054b0984fde393d159856c/FLAG61a391073 [2020-09-24 18:20:51,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0ba3c9ef/9f748b4bee054b0984fde393d159856c [2020-09-24 18:20:51,786 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:20:51,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:20:51,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:51,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:20:51,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:20:51,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:51" (1/1) ... [2020-09-24 18:20:51,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fa69d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:51, skipping insertion in model container [2020-09-24 18:20:51,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:51" (1/1) ... [2020-09-24 18:20:51,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:20:51,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:20:52,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:52,620 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:20:52,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:52,720 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:20:52,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:52 WrapperNode [2020-09-24 18:20:52,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:52,723 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:20:52,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:20:52,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:20:52,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:52" (1/1) ... [2020-09-24 18:20:52,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:52" (1/1) ... [2020-09-24 18:20:52,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:52" (1/1) ... [2020-09-24 18:20:52,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:52" (1/1) ... [2020-09-24 18:20:52,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:52" (1/1) ... [2020-09-24 18:20:52,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:52" (1/1) ... [2020-09-24 18:20:52,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:52" (1/1) ... [2020-09-24 18:20:52,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:20:52,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:20:52,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:20:52,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:20:52,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:52" (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 18:20:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:20:52,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:20:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:20:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:20:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:20:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:20:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:20:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:20:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:20:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:20:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:20:54,298 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:20:54,298 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:20:54,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:54 BoogieIcfgContainer [2020-09-24 18:20:54,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:20:54,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:20:54,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:20:54,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:20:54,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:20:51" (1/3) ... [2020-09-24 18:20:54,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fad09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:54, skipping insertion in model container [2020-09-24 18:20:54,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:52" (2/3) ... [2020-09-24 18:20:54,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75fad09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:54, skipping insertion in model container [2020-09-24 18:20:54,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:54" (3/3) ... [2020-09-24 18:20:54,319 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label56.c [2020-09-24 18:20:54,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:20:54,345 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:20:54,370 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:20:54,408 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:20:54,408 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:20:54,408 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:20:54,408 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:20:54,409 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:20:54,409 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:20:54,409 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:20:54,409 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:20:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:20:54,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 18:20:54,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:54,462 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] [2020-09-24 18:20:54,463 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:54,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:54,471 INFO L82 PathProgramCache]: Analyzing trace with hash 602782831, now seen corresponding path program 1 times [2020-09-24 18:20:54,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:54,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076015756] [2020-09-24 18:20:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:54,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:54,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:55,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:56,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:57,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:58,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:59,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:59,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-24 18:20:59,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:20:59,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:20:59,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:59,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:20:59,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-24 18:20:59,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:20:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:59,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:59,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:59,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:59,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:59,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:20:59,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:59,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:59,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:20:59,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:00,019 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 18:21:00,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076015756] [2020-09-24 18:21:00,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:21:00,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:21:00,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933301184] [2020-09-24 18:21:00,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:21:00,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:00,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:21:00,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:21:00,051 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:21:02,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:02,059 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-24 18:21:02,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:21:02,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-24 18:21:02,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:02,096 INFO L225 Difference]: With dead ends: 1212 [2020-09-24 18:21:02,097 INFO L226 Difference]: Without dead ends: 638 [2020-09-24 18:21:02,109 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 18:21:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-24 18:21:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-24 18:21:02,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 18:21:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 18:21:02,214 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 104 [2020-09-24 18:21:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:02,215 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 18:21:02,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:21:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 18:21:02,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-24 18:21:02,223 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:02,223 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:02,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:21:02,224 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:02,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:02,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1195739072, now seen corresponding path program 1 times [2020-09-24 18:21:02,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:02,225 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120242329] [2020-09-24 18:21:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:02,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:02,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:05,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:05,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-24 18:21:05,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2830 [2020-09-24 18:21:05,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:05,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:05,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 18:21:05,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 18:21:05,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:05,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:05,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:05,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:05,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:05,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:05,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:05,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:05,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:05,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:05,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:05,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:05,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:21:05,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:05,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:21:05,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:05,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 18:21:05,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:05,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120242329] [2020-09-24 18:21:05,390 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:05,390 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:05,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369958031] [2020-09-24 18:21:05,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:05,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:05,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:05,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:05,394 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-24 18:21:07,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:07,504 INFO L93 Difference]: Finished difference Result 1559 states and 1931 transitions. [2020-09-24 18:21:07,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:07,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-09-24 18:21:07,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:07,512 INFO L225 Difference]: With dead ends: 1559 [2020-09-24 18:21:07,512 INFO L226 Difference]: Without dead ends: 980 [2020-09-24 18:21:07,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2020-09-24 18:21:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 889. [2020-09-24 18:21:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889 states. [2020-09-24 18:21:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1094 transitions. [2020-09-24 18:21:07,566 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1094 transitions. Word has length 125 [2020-09-24 18:21:07,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:07,567 INFO L479 AbstractCegarLoop]: Abstraction has 889 states and 1094 transitions. [2020-09-24 18:21:07,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:07,567 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1094 transitions. [2020-09-24 18:21:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-24 18:21:07,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:07,573 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] [2020-09-24 18:21:07,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:21:07,574 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:07,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:07,574 INFO L82 PathProgramCache]: Analyzing trace with hash 305762680, now seen corresponding path program 1 times [2020-09-24 18:21:07,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:07,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008607109] [2020-09-24 18:21:07,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:07,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:07,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:07,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:08,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:08,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:08,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:08,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:12,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:12,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 18:21:12,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:21:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 18:21:12,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 18:21:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 18:21:12,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:12,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:12,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:12,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:12,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:12,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:21:12,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:12,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:12,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:12,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:12,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:12,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:12,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:12,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:21:12,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:12,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 18:21:12,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:12,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:12,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:12,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:21:12,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:21:12,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008607109] [2020-09-24 18:21:12,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:12,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:12,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541838171] [2020-09-24 18:21:12,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:12,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:12,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:12,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:12,955 INFO L87 Difference]: Start difference. First operand 889 states and 1094 transitions. Second operand 5 states. [2020-09-24 18:21:15,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:15,054 INFO L93 Difference]: Finished difference Result 2372 states and 3027 transitions. [2020-09-24 18:21:15,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:15,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-24 18:21:15,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:15,062 INFO L225 Difference]: With dead ends: 2372 [2020-09-24 18:21:15,062 INFO L226 Difference]: Without dead ends: 1507 [2020-09-24 18:21:15,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:15,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-09-24 18:21:15,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1461. [2020-09-24 18:21:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2020-09-24 18:21:15,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1822 transitions. [2020-09-24 18:21:15,142 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1822 transitions. Word has length 134 [2020-09-24 18:21:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:15,149 INFO L479 AbstractCegarLoop]: Abstraction has 1461 states and 1822 transitions. [2020-09-24 18:21:15,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1822 transitions. [2020-09-24 18:21:15,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-24 18:21:15,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:15,160 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:15,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:15,160 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:15,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:15,161 INFO L82 PathProgramCache]: Analyzing trace with hash -588171755, now seen corresponding path program 1 times [2020-09-24 18:21:15,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:15,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861132548] [2020-09-24 18:21:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:15,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:17,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:17,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 18:21:17,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:21:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2168 [2020-09-24 18:21:17,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 18:21:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-24 18:21:17,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:17,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:17,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:17,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:17,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:17,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:17,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:17,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:17,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:17,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:17,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:17,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:17,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:17,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:21:17,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:17,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 18:21:17,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:21:17,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:17,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:21:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:17,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:17,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 18:21:17,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 18:21:17,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:17,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:21:17,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:21:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:17,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861132548] [2020-09-24 18:21:17,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:17,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:17,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090774196] [2020-09-24 18:21:17,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:17,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:17,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:17,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:17,751 INFO L87 Difference]: Start difference. First operand 1461 states and 1822 transitions. Second operand 7 states. [2020-09-24 18:21:20,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:20,185 INFO L93 Difference]: Finished difference Result 3755 states and 4859 transitions. [2020-09-24 18:21:20,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:21:20,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-24 18:21:20,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:20,199 INFO L225 Difference]: With dead ends: 3755 [2020-09-24 18:21:20,199 INFO L226 Difference]: Without dead ends: 2459 [2020-09-24 18:21:20,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:21:20,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2020-09-24 18:21:20,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2283. [2020-09-24 18:21:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2283 states. [2020-09-24 18:21:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 2840 transitions. [2020-09-24 18:21:20,281 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 2840 transitions. Word has length 181 [2020-09-24 18:21:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:20,282 INFO L479 AbstractCegarLoop]: Abstraction has 2283 states and 2840 transitions. [2020-09-24 18:21:20,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:20,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 2840 transitions. [2020-09-24 18:21:20,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-24 18:21:20,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:20,293 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:20,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:21:20,293 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:20,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:20,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1738067261, now seen corresponding path program 1 times [2020-09-24 18:21:20,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:20,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736082474] [2020-09-24 18:21:20,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:20,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:20,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:24,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:25,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:25,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-24 18:21:25,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:21:25,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-24 18:21:25,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:25,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:25,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-24 18:21:25,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-24 18:21:25,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:25,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:25,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:25,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:25,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:25,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:25,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:25,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:25,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:25,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:25,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:25,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:25,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:25,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:25,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:21:25,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:21:25,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:25,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:25,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:25,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:25,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:25,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:21:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:25,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:25,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 18:21:25,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:25,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-24 18:21:25,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:25,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:25,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 18:21:25,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 18:21:25,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736082474] [2020-09-24 18:21:25,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:25,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:25,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739158917] [2020-09-24 18:21:25,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:25,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:25,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:25,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:25,756 INFO L87 Difference]: Start difference. First operand 2283 states and 2840 transitions. Second operand 5 states. [2020-09-24 18:21:27,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:27,506 INFO L93 Difference]: Finished difference Result 5423 states and 6922 transitions. [2020-09-24 18:21:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:27,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-09-24 18:21:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:27,532 INFO L225 Difference]: With dead ends: 5423 [2020-09-24 18:21:27,532 INFO L226 Difference]: Without dead ends: 3305 [2020-09-24 18:21:27,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 18:21:27,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2020-09-24 18:21:27,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 2704. [2020-09-24 18:21:27,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2704 states. [2020-09-24 18:21:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3265 transitions. [2020-09-24 18:21:27,667 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3265 transitions. Word has length 182 [2020-09-24 18:21:27,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:27,668 INFO L479 AbstractCegarLoop]: Abstraction has 2704 states and 3265 transitions. [2020-09-24 18:21:27,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:27,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3265 transitions. [2020-09-24 18:21:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-24 18:21:27,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:27,682 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:21:27,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:21:27,683 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:27,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:27,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1707194346, now seen corresponding path program 1 times [2020-09-24 18:21:27,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:27,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594972892] [2020-09-24 18:21:27,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:28,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:28,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:28,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:28,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:28,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:32,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-24 18:21:32,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:21:32,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4682 [2020-09-24 18:21:32,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:21:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 18:21:32,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 18:21:32,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:32,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:32,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:32,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:32,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:32,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:32,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:21:32,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:32,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:32,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:32,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 18:21:32,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:32,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:32,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:32,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:21:32,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:32,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 18:21:32,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:32,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:21:32,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:21:32,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:21:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:32,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:32,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:32,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 18:21:32,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:32,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 18:21:32,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:32,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:32,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 18:21:32,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:32,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:32,892 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 18:21:32,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594972892] [2020-09-24 18:21:32,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:32,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:32,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848857737] [2020-09-24 18:21:32,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:32,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:32,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:32,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:32,897 INFO L87 Difference]: Start difference. First operand 2704 states and 3265 transitions. Second operand 7 states. [2020-09-24 18:21:35,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:35,387 INFO L93 Difference]: Finished difference Result 5914 states and 7298 transitions. [2020-09-24 18:21:35,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:21:35,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-09-24 18:21:35,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:35,404 INFO L225 Difference]: With dead ends: 5914 [2020-09-24 18:21:35,404 INFO L226 Difference]: Without dead ends: 3227 [2020-09-24 18:21:35,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:21:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2020-09-24 18:21:35,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 3016. [2020-09-24 18:21:35,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3016 states. [2020-09-24 18:21:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 3642 transitions. [2020-09-24 18:21:35,500 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 3642 transitions. Word has length 188 [2020-09-24 18:21:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:35,501 INFO L479 AbstractCegarLoop]: Abstraction has 3016 states and 3642 transitions. [2020-09-24 18:21:35,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 3642 transitions. [2020-09-24 18:21:35,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-24 18:21:35,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:35,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:21:35,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:21:35,518 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:35,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:35,519 INFO L82 PathProgramCache]: Analyzing trace with hash -907335323, now seen corresponding path program 1 times [2020-09-24 18:21:35,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:35,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589727162] [2020-09-24 18:21:35,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:35,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:35,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:36,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking...