/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem10_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:47:16,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:47:16,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:47:16,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:47:16,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:47:16,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:47:16,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:47:16,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:47:16,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:47:16,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:47:16,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:47:16,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:47:16,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:47:16,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:47:16,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:47:16,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:47:16,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:47:16,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:47:16,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:47:16,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:47:16,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:47:16,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:47:16,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:47:16,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:47:16,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:47:16,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:47:16,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:47:16,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:47:16,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:47:16,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:47:16,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:47:16,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:47:16,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:47:16,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:47:16,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:47:16,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:47:16,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:47:16,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:47:16,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:47:16,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:47:16,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:47:16,233 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 [2020-09-25 06:47:16,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:47:16,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:47:16,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:47:16,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:47:16,261 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:47:16,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:47:16,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:47:16,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:47:16,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:47:16,262 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:47:16,263 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:47:16,263 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:47:16,263 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:47:16,263 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:47:16,263 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:47:16,264 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:47:16,264 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:47:16,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:47:16,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:47:16,264 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:47:16,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:47:16,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:16,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:47:16,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:47:16,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:47:16,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:47:16,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:47:16,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:47:16,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:47:16,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:47:16,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:47:16,740 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:47:16,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:47:16,748 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:47:16,750 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:47:16,752 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 06:47:16,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c45748f77/734b4e2dcdf5489fbe3f32f372be8a51/FLAG132ac72d5 [2020-09-25 06:47:17,483 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:47:17,487 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 06:47:17,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c45748f77/734b4e2dcdf5489fbe3f32f372be8a51/FLAG132ac72d5 [2020-09-25 06:47:17,753 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c45748f77/734b4e2dcdf5489fbe3f32f372be8a51 [2020-09-25 06:47:17,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:47:17,777 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:47:17,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:17,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:47:17,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:47:17,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:17" (1/1) ... [2020-09-25 06:47:17,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:17, skipping insertion in model container [2020-09-25 06:47:17,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:17" (1/1) ... [2020-09-25 06:47:17,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:47:17,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:47:18,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:18,370 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:47:18,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:18,592 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:47:18,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:18 WrapperNode [2020-09-25 06:47:18,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:18,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:47:18,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:47:18,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:47:18,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:18" (1/1) ... [2020-09-25 06:47:18,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:18" (1/1) ... [2020-09-25 06:47:18,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:18" (1/1) ... [2020-09-25 06:47:18,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:18" (1/1) ... [2020-09-25 06:47:18,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:18" (1/1) ... [2020-09-25 06:47:18,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:18" (1/1) ... [2020-09-25 06:47:18,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:18" (1/1) ... [2020-09-25 06:47:18,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:47:18,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:47:18,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:47:18,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:47:18,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:18" (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 [2020-09-25 06:47:18,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:47:18,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:47:18,784 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:47:18,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:47:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:47:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:47:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:47:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:47:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:47:18,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:47:18,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:47:20,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:47:20,244 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:47:20,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:20 BoogieIcfgContainer [2020-09-25 06:47:20,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:47:20,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:47:20,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:47:20,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:47:20,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:47:17" (1/3) ... [2020-09-25 06:47:20,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:20, skipping insertion in model container [2020-09-25 06:47:20,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:18" (2/3) ... [2020-09-25 06:47:20,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@728c409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:20, skipping insertion in model container [2020-09-25 06:47:20,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:20" (3/3) ... [2020-09-25 06:47:20,281 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label20.c [2020-09-25 06:47:20,295 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:47:20,312 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:47:20,334 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:47:20,367 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:47:20,367 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:47:20,367 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:47:20,367 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:47:20,368 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:47:20,368 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:47:20,368 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:47:20,368 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:47:20,399 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:47:20,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 06:47:20,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:20,410 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] [2020-09-25 06:47:20,411 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:20,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1331013031, now seen corresponding path program 1 times [2020-09-25 06:47:20,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:20,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791069953] [2020-09-25 06:47:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:20,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:21,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 06:47:21,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:21,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-09-25 06:47:21,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:21,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:21,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:21,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 06:47:21,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 06:47:21,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:21,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:21,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:21,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:21,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:21,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:21,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 06:47:21,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:21,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:21,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:21,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:47:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:21,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791069953] [2020-09-25 06:47:21,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:21,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:47:21,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617437551] [2020-09-25 06:47:21,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:47:21,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:21,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:47:21,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:47:21,361 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:47:23,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:23,474 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 06:47:23,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:47:23,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-25 06:47:23,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:23,499 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 06:47:23,500 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 06:47:23,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 06:47:23,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 06:47:23,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 06:47:23,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 06:47:23,616 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 47 [2020-09-25 06:47:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:23,616 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 06:47:23,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:47:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 06:47:23,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 06:47:23,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:23,624 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:23,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:47:23,625 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:23,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:23,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1207738435, now seen corresponding path program 1 times [2020-09-25 06:47:23,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:23,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077277734] [2020-09-25 06:47:23,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:23,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:23,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:24,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:25,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 06:47:25,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:47:25,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1664 [2020-09-25 06:47:25,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:25,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:25,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:47:25,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:25,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:25,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:25,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:25,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:25,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:47:25,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:25,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:25,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:25,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:25,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:25,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:47:25,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 06:47:25,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:25,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:25,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:25,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:47:25,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 06:47:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:25,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077277734] [2020-09-25 06:47:25,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:25,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:25,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222796607] [2020-09-25 06:47:25,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:25,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:25,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:25,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:25,769 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 06:47:27,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:27,992 INFO L93 Difference]: Finished difference Result 1258 states and 1571 transitions. [2020-09-25 06:47:27,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 06:47:27,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-09-25 06:47:27,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:27,997 INFO L225 Difference]: With dead ends: 1258 [2020-09-25 06:47:27,998 INFO L226 Difference]: Without dead ends: 730 [2020-09-25 06:47:28,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:47:28,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-25 06:47:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 699. [2020-09-25 06:47:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 06:47:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 855 transitions. [2020-09-25 06:47:28,042 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 855 transitions. Word has length 127 [2020-09-25 06:47:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:28,043 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 855 transitions. [2020-09-25 06:47:28,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 855 transitions. [2020-09-25 06:47:28,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 06:47:28,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:28,047 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:28,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:47:28,067 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:28,067 INFO L82 PathProgramCache]: Analyzing trace with hash 843318586, now seen corresponding path program 1 times [2020-09-25 06:47:28,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:28,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471439914] [2020-09-25 06:47:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:31,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:31,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:31,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:32,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:32,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 06:47:32,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:47:32,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4693 [2020-09-25 06:47:32,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:32,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:32,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:32,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:47:32,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 06:47:32,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:32,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:32,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:32,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:32,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:32,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:32,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:47:32,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:32,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:32,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:32,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:32,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:33,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:33,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:33,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:33,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:33,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 06:47:33,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:33,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:33,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:33,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:33,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:47:33,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:33,236 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:33,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471439914] [2020-09-25 06:47:33,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:33,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:47:33,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330841555] [2020-09-25 06:47:33,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:47:33,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:33,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:47:33,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:33,239 INFO L87 Difference]: Start difference. First operand 699 states and 855 transitions. Second operand 6 states. [2020-09-25 06:47:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:36,248 INFO L93 Difference]: Finished difference Result 1925 states and 2517 transitions. [2020-09-25 06:47:36,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:47:36,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-09-25 06:47:36,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:36,263 INFO L225 Difference]: With dead ends: 1925 [2020-09-25 06:47:36,263 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 06:47:36,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:36,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 06:47:36,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1335. [2020-09-25 06:47:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-09-25 06:47:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1725 transitions. [2020-09-25 06:47:36,318 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1725 transitions. Word has length 136 [2020-09-25 06:47:36,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:36,319 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 1725 transitions. [2020-09-25 06:47:36,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:47:36,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1725 transitions. [2020-09-25 06:47:36,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 06:47:36,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:36,325 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:36,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:47:36,325 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:36,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:36,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1301933938, now seen corresponding path program 1 times [2020-09-25 06:47:36,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:36,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799262343] [2020-09-25 06:47:36,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:36,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:36,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:36,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:37,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:38,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 06:47:38,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:47:38,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2067 [2020-09-25 06:47:38,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:38,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:38,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:38,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:47:38,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:47:38,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:38,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:38,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:38,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:38,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 06:47:38,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:38,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:38,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:47:38,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:38,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:38,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:47:38,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:38,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 06:47:38,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:38,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:38,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:47:38,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:38,747 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:38,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799262343] [2020-09-25 06:47:38,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:38,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 06:47:38,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184809175] [2020-09-25 06:47:38,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:38,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:38,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:38,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:38,750 INFO L87 Difference]: Start difference. First operand 1335 states and 1725 transitions. Second operand 8 states. [2020-09-25 06:47:41,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:41,929 INFO L93 Difference]: Finished difference Result 4265 states and 5989 transitions. [2020-09-25 06:47:41,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:47:41,930 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-09-25 06:47:41,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:41,964 INFO L225 Difference]: With dead ends: 4265 [2020-09-25 06:47:41,964 INFO L226 Difference]: Without dead ends: 3095 [2020-09-25 06:47:41,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:47:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2020-09-25 06:47:42,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 2757. [2020-09-25 06:47:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2757 states. [2020-09-25 06:47:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3617 transitions. [2020-09-25 06:47:42,167 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3617 transitions. Word has length 138 [2020-09-25 06:47:42,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:42,169 INFO L479 AbstractCegarLoop]: Abstraction has 2757 states and 3617 transitions. [2020-09-25 06:47:42,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:42,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3617 transitions. [2020-09-25 06:47:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 06:47:42,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:42,183 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:47:42,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:47:42,183 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:42,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:42,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1068014475, now seen corresponding path program 1 times [2020-09-25 06:47:42,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:42,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362964519] [2020-09-25 06:47:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:42,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:42,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:42,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:47,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:47,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 06:47:47,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:47:47,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 06:47:47,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:47,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:47,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 06:47:47,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:47,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:47,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:47,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:47,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:47,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:47:47,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:47,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:47,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:47,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:47,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:47,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:47,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:47,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:47,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:47,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 06:47:47,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:47,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:47,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:47,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 06:47:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:47:47,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:47:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:47,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:47,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:47,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 06:47:47,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:47,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 06:47:47,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:47,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:47,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:47,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:47,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 06:47:47,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:48,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362964519] [2020-09-25 06:47:48,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:48,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 06:47:48,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749508400] [2020-09-25 06:47:48,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 06:47:48,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:48,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 06:47:48,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 06:47:48,008 INFO L87 Difference]: Start difference. First operand 2757 states and 3617 transitions. Second operand 8 states. [2020-09-25 06:47:51,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:51,642 INFO L93 Difference]: Finished difference Result 7456 states and 10233 transitions. [2020-09-25 06:47:51,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:47:51,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-09-25 06:47:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:51,676 INFO L225 Difference]: With dead ends: 7456 [2020-09-25 06:47:51,676 INFO L226 Difference]: Without dead ends: 4864 [2020-09-25 06:47:51,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 06:47:51,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4864 states. [2020-09-25 06:47:51,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4864 to 4484. [2020-09-25 06:47:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4484 states. [2020-09-25 06:47:51,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4484 states to 4484 states and 6229 transitions. [2020-09-25 06:47:51,866 INFO L78 Accepts]: Start accepts. Automaton has 4484 states and 6229 transitions. Word has length 218 [2020-09-25 06:47:51,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:51,867 INFO L479 AbstractCegarLoop]: Abstraction has 4484 states and 6229 transitions. [2020-09-25 06:47:51,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 06:47:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4484 states and 6229 transitions. [2020-09-25 06:47:51,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 06:47:51,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:51,872 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:47:51,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:51,872 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:51,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:51,873 INFO L82 PathProgramCache]: Analyzing trace with hash -862349572, now seen corresponding path program 1 times [2020-09-25 06:47:51,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:51,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537739905] [2020-09-25 06:47:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:51,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:52,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:52,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:52,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:54,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:54,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:54,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:55,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:56,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:56,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 06:47:56,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 06:47:56,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 06:47:56,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:56,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:56,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:47:56,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:47:56,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:57,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:57,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:57,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:57,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:57,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:57,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:57,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:57,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:57,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:57,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:57,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:57,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:57,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:57,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:57,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:57,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 06:47:57,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:57,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:57,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:47:57,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:57,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 06:47:57,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:57,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 06:47:57,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:57,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:57,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:57,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 06:47:57,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:57,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537739905] [2020-09-25 06:47:57,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:57,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 06:47:57,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965543089] [2020-09-25 06:47:57,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 06:47:57,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:57,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 06:47:57,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 06:47:57,742 INFO L87 Difference]: Start difference. First operand 4484 states and 6229 transitions. Second operand 10 states. [2020-09-25 06:48:01,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:01,793 INFO L93 Difference]: Finished difference Result 9163 states and 12744 transitions. [2020-09-25 06:48:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 06:48:01,794 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 219 [2020-09-25 06:48:01,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:48:01,831 INFO L225 Difference]: With dead ends: 9163 [2020-09-25 06:48:01,831 INFO L226 Difference]: Without dead ends: 4844 [2020-09-25 06:48:01,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-09-25 06:48:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2020-09-25 06:48:01,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4488. [2020-09-25 06:48:01,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4488 states. [2020-09-25 06:48:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4488 states to 4488 states and 6243 transitions. [2020-09-25 06:48:01,997 INFO L78 Accepts]: Start accepts. Automaton has 4488 states and 6243 transitions. Word has length 219 [2020-09-25 06:48:01,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:48:01,997 INFO L479 AbstractCegarLoop]: Abstraction has 4488 states and 6243 transitions. [2020-09-25 06:48:01,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 06:48:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 4488 states and 6243 transitions. [2020-09-25 06:48:02,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 06:48:02,004 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:48:02,004 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 06:48:02,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:48:02,005 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:48:02,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:48:02,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2022070061, now seen corresponding path program 1 times [2020-09-25 06:48:02,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:48:02,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980478443] [2020-09-25 06:48:02,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:48:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:48:02,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:02,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:02,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:02,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:02,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:48:03,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking...