/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 --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=1000 --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_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:27:43,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:27:43,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:27:43,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:27:43,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:27:43,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:27:43,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:27:43,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:27:43,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:27:43,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:27:43,337 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:27:43,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:27:43,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:27:43,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:27:43,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:27:43,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:27:43,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:27:43,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:27:43,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:27:43,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:27:43,363 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:27:43,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:27:43,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:27:43,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:27:43,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:27:43,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:27:43,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:27:43,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:27:43,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:27:43,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:27:43,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:27:43,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:27:43,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:27:43,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:27:43,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:27:43,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:27:43,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:27:43,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:27:43,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:27:43,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:27:43,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:27:43,386 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 [2020-09-21 12:27:43,435 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:27:43,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:27:43,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:27:43,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:27:43,438 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:27:43,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:27:43,439 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:27:43,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:27:43,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:27:43,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:27:43,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:27:43,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:27:43,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:27:43,441 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:27:43,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:27:43,441 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:27:43,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:27:43,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:27:43,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:27:43,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:27:43,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:27:43,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:27:43,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:27:43,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:27:43,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:27:43,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:27:43,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:27:43,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:27:43,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:27:43,444 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.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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:27:43,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:27:43,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:27:43,911 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:27:43,913 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:27:43,914 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:27:43,915 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-21 12:27:44,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84aa51e8e/f9a9095825b341b38b4c5d256e5eb366/FLAG8879c0857 [2020-09-21 12:27:44,635 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:27:44,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-21 12:27:44,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84aa51e8e/f9a9095825b341b38b4c5d256e5eb366/FLAG8879c0857 [2020-09-21 12:27:44,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84aa51e8e/f9a9095825b341b38b4c5d256e5eb366 [2020-09-21 12:27:44,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:27:44,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:27:44,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:27:44,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:27:44,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:27:44,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:27:44" (1/1) ... [2020-09-21 12:27:44,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afef70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:44, skipping insertion in model container [2020-09-21 12:27:44,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:27:44" (1/1) ... [2020-09-21 12:27:44,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:27:44,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:27:45,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:27:45,456 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:27:45,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:27:45,707 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:27:45,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:45 WrapperNode [2020-09-21 12:27:45,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:27:45,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:27:45,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:27:45,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:27:45,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:45" (1/1) ... [2020-09-21 12:27:45,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:45" (1/1) ... [2020-09-21 12:27:45,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:45" (1/1) ... [2020-09-21 12:27:45,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:45" (1/1) ... [2020-09-21 12:27:45,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:45" (1/1) ... [2020-09-21 12:27:45,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:45" (1/1) ... [2020-09-21 12:27:45,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:45" (1/1) ... [2020-09-21 12:27:45,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:27:45,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:27:45,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:27:45,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:27:45,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:45" (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 [2020-09-21 12:27:45,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:27:45,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:27:45,933 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-21 12:27:45,933 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:27:45,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-21 12:27:45,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:27:45,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:27:45,934 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:27:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:27:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:27:45,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:27:47,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:27:47,162 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:27:47,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:27:47 BoogieIcfgContainer [2020-09-21 12:27:47,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:27:47,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:27:47,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:27:47,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:27:47,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:27:44" (1/3) ... [2020-09-21 12:27:47,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b10983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:27:47, skipping insertion in model container [2020-09-21 12:27:47,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:45" (2/3) ... [2020-09-21 12:27:47,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b10983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:27:47, skipping insertion in model container [2020-09-21 12:27:47,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:27:47" (3/3) ... [2020-09-21 12:27:47,180 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2020-09-21 12:27:47,192 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:27:47,202 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:27:47,225 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:27:47,257 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:27:47,258 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:27:47,258 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:27:47,258 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:27:47,258 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:27:47,258 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:27:47,259 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:27:47,259 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:27:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-09-21 12:27:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-21 12:27:47,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:47,304 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] [2020-09-21 12:27:47,305 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:47,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:47,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1377016033, now seen corresponding path program 1 times [2020-09-21 12:27:47,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:47,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588285780] [2020-09-21 12:27:47,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:47,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:48,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:48,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:48,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-21 12:27:48,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-21 12:27:48,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:48,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:27:48,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-21 12:27:48,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:27:48,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:48,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:48,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:48,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:48,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:48,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:27:48,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:48,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:48,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:27:48,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:48,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588285780] [2020-09-21 12:27:48,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:48,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:27:48,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775093946] [2020-09-21 12:27:48,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:27:48,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:49,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:27:49,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:49,007 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 4 states. [2020-09-21 12:27:50,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:50,631 INFO L93 Difference]: Finished difference Result 557 states and 956 transitions. [2020-09-21 12:27:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:50,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-09-21 12:27:50,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:50,654 INFO L225 Difference]: With dead ends: 557 [2020-09-21 12:27:50,654 INFO L226 Difference]: Without dead ends: 286 [2020-09-21 12:27:50,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:50,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-21 12:27:50,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2020-09-21 12:27:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-09-21 12:27:50,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 396 transitions. [2020-09-21 12:27:50,755 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 396 transitions. Word has length 115 [2020-09-21 12:27:50,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:50,758 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 396 transitions. [2020-09-21 12:27:50,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:27:50,758 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 396 transitions. [2020-09-21 12:27:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-21 12:27:50,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:50,764 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:27:50,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:27:50,764 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:50,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:50,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1300380632, now seen corresponding path program 1 times [2020-09-21 12:27:50,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:50,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922887654] [2020-09-21 12:27:50,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:50,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:51,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:51,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-21 12:27:51,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:51,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:27:51,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:27:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 12:27:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:52,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:52,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:52,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:52,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:52,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:27:52,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:52,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:52,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:52,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:52,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:52,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:27:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:52,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:52,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:52,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:27:52,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:52,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:27:52,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:52,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:52,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:52,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:27:52,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:52,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922887654] [2020-09-21 12:27:52,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:52,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:27:52,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724677156] [2020-09-21 12:27:52,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:52,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:52,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:52,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:52,341 INFO L87 Difference]: Start difference. First operand 280 states and 396 transitions. Second operand 5 states. [2020-09-21 12:27:53,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:53,612 INFO L93 Difference]: Finished difference Result 659 states and 966 transitions. [2020-09-21 12:27:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:53,613 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-09-21 12:27:53,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:53,620 INFO L225 Difference]: With dead ends: 659 [2020-09-21 12:27:53,620 INFO L226 Difference]: Without dead ends: 286 [2020-09-21 12:27:53,623 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 [2020-09-21 12:27:53,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-21 12:27:53,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2020-09-21 12:27:53,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-09-21 12:27:53,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 356 transitions. [2020-09-21 12:27:53,648 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 356 transitions. Word has length 125 [2020-09-21 12:27:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:53,648 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 356 transitions. [2020-09-21 12:27:53,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 356 transitions. [2020-09-21 12:27:53,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-21 12:27:53,651 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:53,652 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:53,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:27:53,652 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:53,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:53,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1706034196, now seen corresponding path program 1 times [2020-09-21 12:27:53,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:53,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554560316] [2020-09-21 12:27:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:53,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:53,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:54,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:54,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-21 12:27:54,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:54,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-21 12:27:54,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:27:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-09-21 12:27:54,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:55,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:55,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:55,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:55,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:55,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:27:55,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:55,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:55,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:55,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:55,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:55,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:27:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:55,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:55,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:55,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 12:27:55,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:27:55,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:27:55,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:55,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554560316] [2020-09-21 12:27:55,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:55,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:27:55,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220683776] [2020-09-21 12:27:55,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:55,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:55,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:55,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:55,307 INFO L87 Difference]: Start difference. First operand 280 states and 356 transitions. Second operand 5 states. [2020-09-21 12:27:55,572 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-09-21 12:27:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:56,540 INFO L93 Difference]: Finished difference Result 642 states and 849 transitions. [2020-09-21 12:27:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:56,541 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-09-21 12:27:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:56,545 INFO L225 Difference]: With dead ends: 642 [2020-09-21 12:27:56,545 INFO L226 Difference]: Without dead ends: 286 [2020-09-21 12:27:56,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:56,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-21 12:27:56,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2020-09-21 12:27:56,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-09-21 12:27:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 354 transitions. [2020-09-21 12:27:56,564 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 354 transitions. Word has length 127 [2020-09-21 12:27:56,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:56,565 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 354 transitions. [2020-09-21 12:27:56,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:56,565 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 354 transitions. [2020-09-21 12:27:56,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-21 12:27:56,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:56,567 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:27:56,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:27:56,568 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:56,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:56,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1858647342, now seen corresponding path program 1 times [2020-09-21 12:27:56,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:56,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1709594891] [2020-09-21 12:27:56,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:56,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:56,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:57,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:57,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-21 12:27:57,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:57,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-21 12:27:57,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:57,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:57,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:27:57,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:27:57,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:57,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:57,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:57,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:57,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:57,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:57,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:27:57,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:57,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:57,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:27:57,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:57,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:27:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:57,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:57,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:57,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:27:57,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:57,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:27:57,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:27:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:27:57,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:57,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1709594891] [2020-09-21 12:27:57,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:57,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:27:57,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988816128] [2020-09-21 12:27:57,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:27:57,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:57,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:27:57,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:27:57,913 INFO L87 Difference]: Start difference. First operand 280 states and 354 transitions. Second operand 7 states. [2020-09-21 12:27:59,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:59,206 INFO L93 Difference]: Finished difference Result 850 states and 1098 transitions. [2020-09-21 12:27:59,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:27:59,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-09-21 12:27:59,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:59,210 INFO L225 Difference]: With dead ends: 850 [2020-09-21 12:27:59,210 INFO L226 Difference]: Without dead ends: 576 [2020-09-21 12:27:59,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:27:59,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2020-09-21 12:27:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 560. [2020-09-21 12:27:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-09-21 12:27:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 666 transitions. [2020-09-21 12:27:59,242 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 666 transitions. Word has length 130 [2020-09-21 12:27:59,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:59,242 INFO L479 AbstractCegarLoop]: Abstraction has 560 states and 666 transitions. [2020-09-21 12:27:59,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:27:59,243 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 666 transitions. [2020-09-21 12:27:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-21 12:27:59,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:59,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:59,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:27:59,246 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:59,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:59,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1732835459, now seen corresponding path program 1 times [2020-09-21 12:27:59,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:59,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62990072] [2020-09-21 12:27:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:59,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:00,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:00,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-21 12:28:00,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:28:00,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-09-21 12:28:00,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:28:00,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:28:00,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:28:00,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:00,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:00,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:00,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:00,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:00,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:28:00,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:00,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:28:00,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:00,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:00,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:00,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:00,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:28:00,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:00,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 12:28:00,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:28:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:00,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:28:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:00,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:00,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:00,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:28:00,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:00,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-21 12:28:00,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:00,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:00,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:28:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:00,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:00,594 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 12:28:00,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62990072] [2020-09-21 12:28:00,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:00,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:28:00,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169197792] [2020-09-21 12:28:00,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:28:00,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:00,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:28:00,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:00,599 INFO L87 Difference]: Start difference. First operand 560 states and 666 transitions. Second operand 7 states. [2020-09-21 12:28:02,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:02,245 INFO L93 Difference]: Finished difference Result 1696 states and 2114 transitions. [2020-09-21 12:28:02,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:28:02,246 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-09-21 12:28:02,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:02,254 INFO L225 Difference]: With dead ends: 1696 [2020-09-21 12:28:02,254 INFO L226 Difference]: Without dead ends: 1142 [2020-09-21 12:28:02,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:28:02,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2020-09-21 12:28:02,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1120. [2020-09-21 12:28:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1120 states. [2020-09-21 12:28:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1365 transitions. [2020-09-21 12:28:02,340 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1365 transitions. Word has length 143 [2020-09-21 12:28:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:02,340 INFO L479 AbstractCegarLoop]: Abstraction has 1120 states and 1365 transitions. [2020-09-21 12:28:02,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:28:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1365 transitions. [2020-09-21 12:28:02,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-21 12:28:02,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:02,351 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:02,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:28:02,352 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:02,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:02,352 INFO L82 PathProgramCache]: Analyzing trace with hash -428907337, now seen corresponding path program 1 times [2020-09-21 12:28:02,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:02,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730015440] [2020-09-21 12:28:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:02,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:02,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:02,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:03,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:03,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-21 12:28:03,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:03,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-21 12:28:03,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-21 12:28:03,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:28:03,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:03,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:03,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:03,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:03,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:03,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:28:03,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:03,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:03,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:03,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:28:03,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:03,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:28:03,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:03,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:03,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:03,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:28:03,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:03,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 12:28:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:03,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:03,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:28:03,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:28:03,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:28:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:03,717 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:28:03,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730015440] [2020-09-21 12:28:03,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:03,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:28:03,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305702500] [2020-09-21 12:28:03,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:28:03,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:03,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:28:03,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:28:03,720 INFO L87 Difference]: Start difference. First operand 1120 states and 1365 transitions. Second operand 8 states. [2020-09-21 12:28:05,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:05,645 INFO L93 Difference]: Finished difference Result 2802 states and 3516 transitions. [2020-09-21 12:28:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:28:05,646 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-09-21 12:28:05,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:05,657 INFO L225 Difference]: With dead ends: 2802 [2020-09-21 12:28:05,657 INFO L226 Difference]: Without dead ends: 1688 [2020-09-21 12:28:05,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:28:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-09-21 12:28:05,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1680. [2020-09-21 12:28:05,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1680 states. [2020-09-21 12:28:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2009 transitions. [2020-09-21 12:28:05,749 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2009 transitions. Word has length 149 [2020-09-21 12:28:05,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:05,749 INFO L479 AbstractCegarLoop]: Abstraction has 1680 states and 2009 transitions. [2020-09-21 12:28:05,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:28:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2009 transitions. [2020-09-21 12:28:05,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-21 12:28:05,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:05,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:05,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:28:05,757 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:05,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:05,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1997640741, now seen corresponding path program 1 times [2020-09-21 12:28:05,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:05,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842148593] [2020-09-21 12:28:05,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:05,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:05,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:06,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:06,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:06,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-21 12:28:06,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:06,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-21 12:28:06,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:06,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:06,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 12:28:06,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:28:06,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:06,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:06,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:06,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:06,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:28:06,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:06,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:06,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:07,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:07,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 12:28:07,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:07,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-21 12:28:07,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:07,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:07,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:07,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-21 12:28:07,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:07,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 12:28:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:07,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:07,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:28:07,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:07,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-21 12:28:07,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:07,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:28:07,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:28:07,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842148593] [2020-09-21 12:28:07,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:07,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:28:07,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195294646] [2020-09-21 12:28:07,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:28:07,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:07,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:28:07,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:07,150 INFO L87 Difference]: Start difference. First operand 1680 states and 2009 transitions. Second operand 7 states. [2020-09-21 12:28:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:08,947 INFO L93 Difference]: Finished difference Result 4000 states and 5148 transitions. [2020-09-21 12:28:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:28:08,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 163 [2020-09-21 12:28:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:08,962 INFO L225 Difference]: With dead ends: 4000 [2020-09-21 12:28:08,962 INFO L226 Difference]: Without dead ends: 2461 [2020-09-21 12:28:08,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:28:08,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2020-09-21 12:28:09,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2101. [2020-09-21 12:28:09,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2020-09-21 12:28:09,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2477 transitions. [2020-09-21 12:28:09,051 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2477 transitions. Word has length 163 [2020-09-21 12:28:09,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:09,051 INFO L479 AbstractCegarLoop]: Abstraction has 2101 states and 2477 transitions. [2020-09-21 12:28:09,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:28:09,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2477 transitions. [2020-09-21 12:28:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-21 12:28:09,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:09,059 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:09,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:28:09,059 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:09,059 INFO L82 PathProgramCache]: Analyzing trace with hash -133797104, now seen corresponding path program 1 times [2020-09-21 12:28:09,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:09,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495599595] [2020-09-21 12:28:09,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:09,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:10,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-21 12:28:10,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:10,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:28:10,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:10,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:10,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-21 12:28:10,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:28:10,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:10,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:10,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:10,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:10,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:10,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:28:10,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:10,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:10,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:10,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:10,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:10,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:28:10,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:28:10,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:10,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:28:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:10,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:10,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 12:28:10,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:10,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-21 12:28:10,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:28:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:10,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 12:28:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:10,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:10,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:28:10,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:10,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:28:10,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:10,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:28:10,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 12:28:10,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495599595] [2020-09-21 12:28:10,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:10,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:28:10,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408858637] [2020-09-21 12:28:10,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:28:10,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:10,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:28:10,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:10,542 INFO L87 Difference]: Start difference. First operand 2101 states and 2477 transitions. Second operand 7 states. [2020-09-21 12:28:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:12,017 INFO L93 Difference]: Finished difference Result 4407 states and 5518 transitions. [2020-09-21 12:28:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:28:12,018 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 188 [2020-09-21 12:28:12,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:12,033 INFO L225 Difference]: With dead ends: 4407 [2020-09-21 12:28:12,033 INFO L226 Difference]: Without dead ends: 2447 [2020-09-21 12:28:12,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:28:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2020-09-21 12:28:12,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 2242. [2020-09-21 12:28:12,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2242 states. [2020-09-21 12:28:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 2623 transitions. [2020-09-21 12:28:12,122 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 2623 transitions. Word has length 188 [2020-09-21 12:28:12,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:12,122 INFO L479 AbstractCegarLoop]: Abstraction has 2242 states and 2623 transitions. [2020-09-21 12:28:12,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:28:12,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 2623 transitions. [2020-09-21 12:28:12,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-21 12:28:12,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:12,130 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:12,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:28:12,131 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:12,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:12,131 INFO L82 PathProgramCache]: Analyzing trace with hash 431137635, now seen corresponding path program 1 times [2020-09-21 12:28:12,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:12,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186076978] [2020-09-21 12:28:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:12,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:12,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:12,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:13,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:13,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-21 12:28:13,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:13,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-09-21 12:28:13,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:13,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-21 12:28:13,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 12:28:13,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:13,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:13,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:13,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:13,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:13,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:13,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:28:13,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:13,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:13,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:13,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:13,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:28:13,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:13,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:13,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:28:13,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:13,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-21 12:28:13,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:28:13,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:13,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 12:28:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:13,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:13,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:13,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-21 12:28:13,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-21 12:28:13,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:13,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:28:13,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:13,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 12:28:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:13,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:13,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:13,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:28:13,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:13,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:28:13,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:28:13,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:13,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:13,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-21 12:28:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:13,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:13,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:28:13,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:13,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:28:13,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:28:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:13,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:13,647 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 110 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-21 12:28:13,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186076978] [2020-09-21 12:28:13,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:13,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:28:13,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734576501] [2020-09-21 12:28:13,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:28:13,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:13,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:28:13,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:28:13,655 INFO L87 Difference]: Start difference. First operand 2242 states and 2623 transitions. Second operand 8 states. [2020-09-21 12:28:15,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:15,664 INFO L93 Difference]: Finished difference Result 4480 states and 5305 transitions. [2020-09-21 12:28:15,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:28:15,668 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 213 [2020-09-21 12:28:15,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:15,679 INFO L225 Difference]: With dead ends: 4480 [2020-09-21 12:28:15,679 INFO L226 Difference]: Without dead ends: 2379 [2020-09-21 12:28:15,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:28:15,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2020-09-21 12:28:15,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 2107. [2020-09-21 12:28:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2107 states. [2020-09-21 12:28:15,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 2448 transitions. [2020-09-21 12:28:15,757 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 2448 transitions. Word has length 213 [2020-09-21 12:28:15,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:15,758 INFO L479 AbstractCegarLoop]: Abstraction has 2107 states and 2448 transitions. [2020-09-21 12:28:15,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:28:15,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 2448 transitions. [2020-09-21 12:28:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-21 12:28:15,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:15,794 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:15,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:28:15,794 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:15,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:15,795 INFO L82 PathProgramCache]: Analyzing trace with hash -762807136, now seen corresponding path program 1 times [2020-09-21 12:28:15,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:15,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928098517] [2020-09-21 12:28:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:15,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:15,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:16,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:16,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:16,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-09-21 12:28:16,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:16,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:28:16,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-21 12:28:16,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:28:16,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:16,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:16,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:16,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:16,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:16,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:16,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:28:16,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:16,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:16,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:16,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:16,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:16,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:16,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 12:28:16,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:16,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:28:16,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:16,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:16,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:16,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:16,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 12:28:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:17,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:17,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:17,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-21 12:28:17,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:17,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 12:28:17,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:17,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:17,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:17,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:17,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:17,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 12:28:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:17,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:17,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:17,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:28:17,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:17,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:28:17,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:17,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:17,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:17,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:17,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 12:28:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:17,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:17,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:17,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:28:17,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:17,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:28:17,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:17,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:17,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:17,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:28:17,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:17,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-21 12:28:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:17,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:17,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:17,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:28:17,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:17,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-21 12:28:17,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:17,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:28:17,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-09-21 12:28:17,284 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928098517] [2020-09-21 12:28:17,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:17,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:28:17,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669495638] [2020-09-21 12:28:17,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:28:17,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:17,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:28:17,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:17,286 INFO L87 Difference]: Start difference. First operand 2107 states and 2448 transitions. Second operand 7 states. [2020-09-21 12:28:18,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:18,582 INFO L93 Difference]: Finished difference Result 4097 states and 4782 transitions. [2020-09-21 12:28:18,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:28:18,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-09-21 12:28:18,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:18,592 INFO L225 Difference]: With dead ends: 4097 [2020-09-21 12:28:18,592 INFO L226 Difference]: Without dead ends: 2131 [2020-09-21 12:28:18,597 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:28:18,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2020-09-21 12:28:18,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 2117. [2020-09-21 12:28:18,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2117 states. [2020-09-21 12:28:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 2438 transitions. [2020-09-21 12:28:18,658 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 2438 transitions. Word has length 245 [2020-09-21 12:28:18,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:18,659 INFO L479 AbstractCegarLoop]: Abstraction has 2117 states and 2438 transitions. [2020-09-21 12:28:18,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:28:18,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 2438 transitions. [2020-09-21 12:28:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-21 12:28:18,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:18,667 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:28:18,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:28:18,668 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:18,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:18,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1315504094, now seen corresponding path program 1 times [2020-09-21 12:28:18,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:18,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032299280] [2020-09-21 12:28:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:18,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:18,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:19,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:19,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:19,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-21 12:28:19,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:28:19,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:28:19,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:19,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:19,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 12:28:19,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 12:28:19,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:19,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:19,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:19,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:19,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:19,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:28:19,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:19,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:19,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:19,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:19,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:19,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 12:28:19,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:19,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 12:28:19,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-21 12:28:19,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:19,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 12:28:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:19,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:20,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:20,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-21 12:28:20,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:20,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-21 12:28:20,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:28:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-21 12:28:20,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:20,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 12:28:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:20,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:20,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:20,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:28:20,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:20,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:28:20,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:28:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:20,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:20,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-21 12:28:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:20,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:20,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:20,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:28:20,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:20,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:28:20,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:20,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:28:20,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:20,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:20,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-21 12:28:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:20,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:20,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:20,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:28:20,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:20,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:28:20,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:28:20,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:20,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 168 proven. 50 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-09-21 12:28:20,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032299280] [2020-09-21 12:28:20,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:20,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:28:20,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244873914] [2020-09-21 12:28:20,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:28:20,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:20,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:28:20,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:28:20,193 INFO L87 Difference]: Start difference. First operand 2117 states and 2438 transitions. Second operand 7 states. [2020-09-21 12:28:22,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:22,379 INFO L93 Difference]: Finished difference Result 6397 states and 7655 transitions. [2020-09-21 12:28:22,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:28:22,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-09-21 12:28:22,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:22,399 INFO L225 Difference]: With dead ends: 6397 [2020-09-21 12:28:22,399 INFO L226 Difference]: Without dead ends: 4421 [2020-09-21 12:28:22,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:28:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2020-09-21 12:28:22,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4278. [2020-09-21 12:28:22,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4278 states. [2020-09-21 12:28:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4278 states to 4278 states and 5096 transitions. [2020-09-21 12:28:22,538 INFO L78 Accepts]: Start accepts. Automaton has 4278 states and 5096 transitions. Word has length 256 [2020-09-21 12:28:22,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:22,538 INFO L479 AbstractCegarLoop]: Abstraction has 4278 states and 5096 transitions. [2020-09-21 12:28:22,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:28:22,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4278 states and 5096 transitions. [2020-09-21 12:28:22,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-09-21 12:28:22,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:28:22,561 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-21 12:28:22,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:28:22,561 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:28:22,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:28:22,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1656410526, now seen corresponding path program 1 times [2020-09-21 12:28:22,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:28:22,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285424618] [2020-09-21 12:28:22,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:28:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:22,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:23,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:23,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-09-21 12:28:23,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:28:23,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1042 [2020-09-21 12:28:23,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:23,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:28:23,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-09-21 12:28:23,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-21 12:28:23,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:23,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:28:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:23,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:23,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:23,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:28:23,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:23,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:28:23,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:23,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:23,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:23,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-21 12:28:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:23,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:23,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:23,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 12:28:23,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:23,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:28:23,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:23,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:23,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:23,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 12:28:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:23,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:23,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:23,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-21 12:28:23,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:23,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:28:23,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:23,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:23,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:23,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:23,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:24,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-21 12:28:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:24,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:24,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:24,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:28:24,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:24,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:28:24,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:24,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:24,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:24,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:24,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:24,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-21 12:28:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:24,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:24,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:24,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:28:24,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:28:24,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:28:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:28:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:24,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-09-21 12:28:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:28:24,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:28:24,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:28:24,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:28:24,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:28:24,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:28:24,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:28:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:28:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:28:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:28:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:28:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 163 proven. 5 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-09-21 12:28:24,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285424618] [2020-09-21 12:28:24,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:28:24,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:28:24,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344838678] [2020-09-21 12:28:24,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:28:24,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:28:24,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:28:24,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:28:24,189 INFO L87 Difference]: Start difference. First operand 4278 states and 5096 transitions. Second operand 5 states. [2020-09-21 12:28:25,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:28:25,342 INFO L93 Difference]: Finished difference Result 8554 states and 10243 transitions. [2020-09-21 12:28:25,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:28:25,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2020-09-21 12:28:25,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:28:25,344 INFO L225 Difference]: With dead ends: 8554 [2020-09-21 12:28:25,344 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:28:25,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:28:25,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:28:25,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:28:25,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:28:25,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:28:25,366 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 286 [2020-09-21 12:28:25,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:28:25,366 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:28:25,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:28:25,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:28:25,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:28:25,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:28:25,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:28:28,613 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 264 DAG size of output: 151 [2020-09-21 12:28:29,570 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification. DAG size of input: 264 DAG size of output: 151 [2020-09-21 12:28:30,887 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 224 DAG size of output: 80