/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=0.4 --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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:39:15,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:39:15,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:39:15,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:39:15,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:39:15,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:39:15,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:39:15,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:39:15,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:39:15,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:39:15,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:39:15,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:39:15,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:39:15,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:39:15,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:39:15,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:39:15,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:39:15,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:39:15,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:39:15,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:39:15,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:39:15,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:39:15,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:39:15,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:39:15,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:39:15,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:39:15,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:39:15,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:39:15,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:39:15,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:39:15,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:39:15,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:39:15,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:39:15,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:39:15,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:39:15,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:39:15,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:39:15,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:39:15,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:39:15,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:39:15,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:39:15,214 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 05:39:15,264 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:39:15,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:39:15,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:39:15,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:39:15,268 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:39:15,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:39:15,268 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:39:15,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:39:15,268 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:39:15,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:39:15,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:39:15,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:39:15,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:39:15,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:39:15,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:39:15,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:39:15,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:39:15,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:39:15,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:39:15,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:39:15,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:39:15,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:39:15,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:39:15,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:39:15,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:39:15,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:39:15,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:39:15,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:39:15,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:39:15,274 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:39:15,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:39:15,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:39:15,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:39:15,762 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:39:15,763 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:39:15,764 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 05:39:15,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8900bbe0b/67460512efdf4446936f4d0329861c79/FLAG8855256bb [2020-09-25 05:39:16,449 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:39:16,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-25 05:39:16,481 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8900bbe0b/67460512efdf4446936f4d0329861c79/FLAG8855256bb [2020-09-25 05:39:16,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8900bbe0b/67460512efdf4446936f4d0329861c79 [2020-09-25 05:39:16,683 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:39:16,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:39:16,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:16,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:39:16,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:39:16,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:16" (1/1) ... [2020-09-25 05:39:16,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f6647d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:16, skipping insertion in model container [2020-09-25 05:39:16,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:39:16" (1/1) ... [2020-09-25 05:39:16,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:39:16,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:39:17,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:17,427 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:39:17,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:39:17,558 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:39:17,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:17 WrapperNode [2020-09-25 05:39:17,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:39:17,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:39:17,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:39:17,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:39:17,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:17" (1/1) ... [2020-09-25 05:39:17,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:17" (1/1) ... [2020-09-25 05:39:17,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:17" (1/1) ... [2020-09-25 05:39:17,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:17" (1/1) ... [2020-09-25 05:39:17,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:17" (1/1) ... [2020-09-25 05:39:17,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:17" (1/1) ... [2020-09-25 05:39:17,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:17" (1/1) ... [2020-09-25 05:39:17,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:39:17,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:39:17,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:39:17,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:39:17,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:17" (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 05:39:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:39:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:39:17,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:39:17,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:39:17,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:39:17,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:39:17,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:39:17,766 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:39:17,767 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:39:17,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:39:17,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:39:19,303 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:39:19,304 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:39:19,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:19 BoogieIcfgContainer [2020-09-25 05:39:19,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:39:19,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:39:19,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:39:19,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:39:19,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:39:16" (1/3) ... [2020-09-25 05:39:19,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:19, skipping insertion in model container [2020-09-25 05:39:19,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:39:17" (2/3) ... [2020-09-25 05:39:19,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:39:19, skipping insertion in model container [2020-09-25 05:39:19,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:39:19" (3/3) ... [2020-09-25 05:39:19,323 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2020-09-25 05:39:19,335 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:39:19,348 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:39:19,376 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:39:19,414 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:39:19,415 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:39:19,415 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:39:19,415 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:39:19,415 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:39:19,415 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:39:19,416 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:39:19,416 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:39:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:39:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 05:39:19,462 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:19,464 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] [2020-09-25 05:39:19,465 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:19,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:19,474 INFO L82 PathProgramCache]: Analyzing trace with hash -495691305, now seen corresponding path program 1 times [2020-09-25 05:39:19,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:19,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139021569] [2020-09-25 05:39:19,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:19,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:19,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:20,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:20,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:20,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 05:39:20,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:20,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 731 [2020-09-25 05:39:20,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:20,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:20,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:39:20,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:39:20,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 05:39:20,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:39:20,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:20,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:20,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:20,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:20,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:20,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 05:39:20,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:20,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:20,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:20,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:20,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:39:20,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:20,719 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 05:39:20,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139021569] [2020-09-25 05:39:20,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:39:20,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:39:20,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61633290] [2020-09-25 05:39:20,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:39:20,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:20,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:39:20,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:39:20,766 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:39:23,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:23,067 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-25 05:39:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:39:23,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 05:39:23,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:23,103 INFO L225 Difference]: With dead ends: 1163 [2020-09-25 05:39:23,103 INFO L226 Difference]: Without dead ends: 634 [2020-09-25 05:39:23,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:23,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-25 05:39:23,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-25 05:39:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-25 05:39:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-25 05:39:23,223 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 54 [2020-09-25 05:39:23,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:23,225 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-25 05:39:23,225 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:39:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-25 05:39:23,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 05:39:23,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:23,242 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:23,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:39:23,242 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:23,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:23,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1783140025, now seen corresponding path program 1 times [2020-09-25 05:39:23,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:23,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127117823] [2020-09-25 05:39:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:23,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:23,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:23,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:28,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:28,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 05:39:28,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:39:28,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4840 [2020-09-25 05:39:28,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:28,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:28,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:39:28,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 05:39:28,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:28,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:28,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:28,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:28,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:28,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:28,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:39:28,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:28,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:28,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:28,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:28,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:28,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:28,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:28,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:28,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:39:28,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:28,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 05:39:28,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:28,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:28,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:39:28,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:28,524 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:28,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127117823] [2020-09-25 05:39:28,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:28,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:28,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555865775] [2020-09-25 05:39:28,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:28,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:28,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:28,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:28,530 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 5 states. [2020-09-25 05:39:30,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:30,244 INFO L93 Difference]: Finished difference Result 1461 states and 1941 transitions. [2020-09-25 05:39:30,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:30,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 05:39:30,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:30,253 INFO L225 Difference]: With dead ends: 1461 [2020-09-25 05:39:30,253 INFO L226 Difference]: Without dead ends: 896 [2020-09-25 05:39:30,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-25 05:39:30,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 884. [2020-09-25 05:39:30,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2020-09-25 05:39:30,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1146 transitions. [2020-09-25 05:39:30,305 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1146 transitions. Word has length 133 [2020-09-25 05:39:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:30,306 INFO L479 AbstractCegarLoop]: Abstraction has 884 states and 1146 transitions. [2020-09-25 05:39:30,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:30,306 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1146 transitions. [2020-09-25 05:39:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 05:39:30,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:30,311 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:30,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:39:30,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:30,312 INFO L82 PathProgramCache]: Analyzing trace with hash -27995731, now seen corresponding path program 1 times [2020-09-25 05:39:30,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:30,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457876541] [2020-09-25 05:39:30,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:30,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:30,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:30,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:31,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 05:39:31,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:39:31,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1456 [2020-09-25 05:39:31,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:31,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:31,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:31,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 05:39:31,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 05:39:31,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:31,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:31,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:31,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:31,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:31,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:39:31,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:31,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:31,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:31,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:31,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:32,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:32,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:39:32,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:32,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 05:39:32,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:32,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:32,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:32,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:32,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:39:32,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:39:32,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457876541] [2020-09-25 05:39:32,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:32,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:39:32,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198996158] [2020-09-25 05:39:32,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:39:32,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:32,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:39:32,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:39:32,125 INFO L87 Difference]: Start difference. First operand 884 states and 1146 transitions. Second operand 5 states. [2020-09-25 05:39:33,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:33,728 INFO L93 Difference]: Finished difference Result 2393 states and 3232 transitions. [2020-09-25 05:39:33,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:39:33,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-25 05:39:33,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:33,746 INFO L225 Difference]: With dead ends: 2393 [2020-09-25 05:39:33,747 INFO L226 Difference]: Without dead ends: 1524 [2020-09-25 05:39:33,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:39:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2020-09-25 05:39:33,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1494. [2020-09-25 05:39:33,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1494 states. [2020-09-25 05:39:33,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1852 transitions. [2020-09-25 05:39:33,799 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1852 transitions. Word has length 145 [2020-09-25 05:39:33,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:33,800 INFO L479 AbstractCegarLoop]: Abstraction has 1494 states and 1852 transitions. [2020-09-25 05:39:33,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:39:33,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1852 transitions. [2020-09-25 05:39:33,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-25 05:39:33,809 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:33,809 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:33,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:39:33,810 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:33,811 INFO L82 PathProgramCache]: Analyzing trace with hash 480632245, now seen corresponding path program 1 times [2020-09-25 05:39:33,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:33,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612426648] [2020-09-25 05:39:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:33,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:34,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:34,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:34,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:37,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:38,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:38,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:38,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-25 05:39:38,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:39:38,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:39:38,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:38,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:39:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:39:38,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 05:39:38,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:38,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:38,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:38,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:38,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:38,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:39:38,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:38,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:38,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:38,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:38,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:38,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:39,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:39,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:39,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:39,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:39:39,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:39,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 05:39:39,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:39,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:39,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:39:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:39,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 05:39:39,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:39,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:39:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:39,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:39,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:39,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:39,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:39,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 05:39:39,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:39,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:39,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:39,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 05:39:39,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:39:39,512 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:39,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612426648] [2020-09-25 05:39:39,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:39,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:39:39,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131349537] [2020-09-25 05:39:39,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:39:39,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:39,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:39:39,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:39:39,520 INFO L87 Difference]: Start difference. First operand 1494 states and 1852 transitions. Second operand 8 states. [2020-09-25 05:39:43,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:43,500 INFO L93 Difference]: Finished difference Result 4599 states and 6303 transitions. [2020-09-25 05:39:43,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:39:43,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 222 [2020-09-25 05:39:43,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:43,528 INFO L225 Difference]: With dead ends: 4599 [2020-09-25 05:39:43,528 INFO L226 Difference]: Without dead ends: 3120 [2020-09-25 05:39:43,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:39:43,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2020-09-25 05:39:43,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2911. [2020-09-25 05:39:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2911 states. [2020-09-25 05:39:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2911 states to 2911 states and 3762 transitions. [2020-09-25 05:39:43,688 INFO L78 Accepts]: Start accepts. Automaton has 2911 states and 3762 transitions. Word has length 222 [2020-09-25 05:39:43,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:43,691 INFO L479 AbstractCegarLoop]: Abstraction has 2911 states and 3762 transitions. [2020-09-25 05:39:43,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:39:43,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2911 states and 3762 transitions. [2020-09-25 05:39:43,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 05:39:43,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:43,699 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:39:43,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:39:43,699 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:43,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:43,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1311681026, now seen corresponding path program 1 times [2020-09-25 05:39:43,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:43,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469235621] [2020-09-25 05:39:43,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:43,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:44,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:44,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:47,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:48,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 05:39:48,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 05:39:48,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 05:39:48,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:48,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 05:39:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 05:39:48,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:48,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:48,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:48,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:48,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:48,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:39:48,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:48,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:48,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:48,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:48,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:48,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:48,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:49,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:49,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:49,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:49,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 05:39:49,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:49,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:49,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:49,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 05:39:49,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:49,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:39:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:49,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:49,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:49,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 05:39:49,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:49,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 05:39:49,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:49,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:49,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 05:39:49,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 152 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:49,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469235621] [2020-09-25 05:39:49,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:49,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:39:49,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055961383] [2020-09-25 05:39:49,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:39:49,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:49,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:39:49,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:49,398 INFO L87 Difference]: Start difference. First operand 2911 states and 3762 transitions. Second operand 7 states. [2020-09-25 05:39:51,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:39:51,814 INFO L93 Difference]: Finished difference Result 6665 states and 8968 transitions. [2020-09-25 05:39:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:39:51,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-09-25 05:39:51,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:39:51,833 INFO L225 Difference]: With dead ends: 6665 [2020-09-25 05:39:51,833 INFO L226 Difference]: Without dead ends: 3119 [2020-09-25 05:39:51,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:39:51,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2020-09-25 05:39:51,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 2745. [2020-09-25 05:39:51,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2745 states. [2020-09-25 05:39:51,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2745 states to 2745 states and 3471 transitions. [2020-09-25 05:39:51,930 INFO L78 Accepts]: Start accepts. Automaton has 2745 states and 3471 transitions. Word has length 226 [2020-09-25 05:39:51,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:39:51,930 INFO L479 AbstractCegarLoop]: Abstraction has 2745 states and 3471 transitions. [2020-09-25 05:39:51,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:39:51,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2745 states and 3471 transitions. [2020-09-25 05:39:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-09-25 05:39:51,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:39:51,936 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, 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] [2020-09-25 05:39:51,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:39:51,937 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:39:51,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:39:51,937 INFO L82 PathProgramCache]: Analyzing trace with hash -313986774, now seen corresponding path program 1 times [2020-09-25 05:39:51,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:39:51,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [297068833] [2020-09-25 05:39:51,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:39:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:52,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:54,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:55,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:56,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:56,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 05:39:56,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:39:56,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 05:39:56,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:56,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:39:56,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 05:39:56,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:39:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:57,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:39:57,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:57,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:39:57,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:57,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:39:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:57,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:39:57,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:57,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:39:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:57,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 05:39:57,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:57,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 05:39:57,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:57,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:57,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:39:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:39:57,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 05:39:57,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:39:57,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 05:39:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:39:57,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:39:57,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:39:57,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:39:57,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:39:57,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-25 05:39:57,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:39:57,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:39:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:39:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:39:57,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 05:39:57,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:39:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 156 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:39:57,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [297068833] [2020-09-25 05:39:57,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:39:57,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:39:57,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085744399] [2020-09-25 05:39:57,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:39:57,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:39:57,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:39:57,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:39:57,486 INFO L87 Difference]: Start difference. First operand 2745 states and 3471 transitions. Second operand 7 states. [2020-09-25 05:40:00,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:40:00,082 INFO L93 Difference]: Finished difference Result 6635 states and 9311 transitions. [2020-09-25 05:40:00,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:40:00,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-09-25 05:40:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:40:00,121 INFO L225 Difference]: With dead ends: 6635 [2020-09-25 05:40:00,121 INFO L226 Difference]: Without dead ends: 3877 [2020-09-25 05:40:00,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:40:00,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3877 states. [2020-09-25 05:40:00,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3877 to 3513. [2020-09-25 05:40:00,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3513 states. [2020-09-25 05:40:00,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4425 transitions. [2020-09-25 05:40:00,303 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4425 transitions. Word has length 229 [2020-09-25 05:40:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:40:00,303 INFO L479 AbstractCegarLoop]: Abstraction has 3513 states and 4425 transitions. [2020-09-25 05:40:00,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:40:00,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4425 transitions. [2020-09-25 05:40:00,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-09-25 05:40:00,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:40:00,312 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:40:00,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:40:00,312 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:40:00,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:40:00,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1887075616, now seen corresponding path program 1 times [2020-09-25 05:40:00,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:40:00,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772221249] [2020-09-25 05:40:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:40:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:40:00,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:40:00,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking...