/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=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:00:23,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:00:23,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:00:23,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:00:23,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:00:23,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:00:23,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:00:23,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:00:23,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:00:23,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:00:23,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:00:23,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:00:23,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:00:23,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:00:23,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:00:23,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:00:23,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:00:23,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:00:23,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:00:23,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:00:23,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:00:23,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:00:23,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:00:23,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:00:23,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:00:23,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:00:23,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:00:23,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:00:23,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:00:23,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:00:23,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:00:23,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:00:23,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:00:23,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:00:23,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:00:23,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:00:23,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:00:23,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:00:23,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:00:23,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:00:23,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:00:23,326 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 09:00:23,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:00:23,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:00:23,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:00:23,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:00:23,376 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:00:23,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:00:23,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:00:23,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:00:23,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:00:23,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:00:23,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:00:23,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:00:23,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:00:23,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:00:23,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:00:23,380 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:00:23,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:00:23,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:00:23,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:00:23,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:00:23,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:00:23,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:00:23,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:00:23,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:00:23,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:00:23,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:00:23,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:00:23,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:00:23,383 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:00:23,383 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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-09-25 09:00:23,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:00:23,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:00:23,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:00:23,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:00:23,853 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:00:23,854 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 09:00:23,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de4286b25/a2f4f29f5fe1491a8cb7fe553af2c62c/FLAGcbb31a2ed [2020-09-25 09:00:24,610 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:00:24,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label35.c [2020-09-25 09:00:24,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de4286b25/a2f4f29f5fe1491a8cb7fe553af2c62c/FLAGcbb31a2ed [2020-09-25 09:00:24,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de4286b25/a2f4f29f5fe1491a8cb7fe553af2c62c [2020-09-25 09:00:24,825 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:00:24,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:00:24,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:24,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:00:24,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:00:24,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:24" (1/1) ... [2020-09-25 09:00:24,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e48a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:24, skipping insertion in model container [2020-09-25 09:00:24,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:00:24" (1/1) ... [2020-09-25 09:00:24,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:00:24,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:00:25,453 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:25,459 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:00:25,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:00:25,659 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:00:25,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:25 WrapperNode [2020-09-25 09:00:25,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:00:25,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:00:25,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:00:25,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:00:25,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:25" (1/1) ... [2020-09-25 09:00:25,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:25" (1/1) ... [2020-09-25 09:00:25,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:25" (1/1) ... [2020-09-25 09:00:25,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:25" (1/1) ... [2020-09-25 09:00:25,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:25" (1/1) ... [2020-09-25 09:00:25,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:25" (1/1) ... [2020-09-25 09:00:25,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:25" (1/1) ... [2020-09-25 09:00:25,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:00:25,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:00:25,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:00:25,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:00:25,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:25" (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 09:00:25,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:00:25,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:00:25,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:00:25,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:00:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:00:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:00:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:00:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:00:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:00:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:00:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:00:27,211 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:00:27,211 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:00:27,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:27 BoogieIcfgContainer [2020-09-25 09:00:27,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:00:27,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:00:27,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:00:27,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:00:27,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:00:24" (1/3) ... [2020-09-25 09:00:27,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2318ccec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:27, skipping insertion in model container [2020-09-25 09:00:27,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:00:25" (2/3) ... [2020-09-25 09:00:27,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2318ccec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:00:27, skipping insertion in model container [2020-09-25 09:00:27,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:00:27" (3/3) ... [2020-09-25 09:00:27,231 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label35.c [2020-09-25 09:00:27,243 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:00:27,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:00:27,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:00:27,317 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:00:27,318 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:00:27,318 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:00:27,318 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:00:27,318 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:00:27,318 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:00:27,318 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:00:27,318 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:00:27,354 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 09:00:27,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 09:00:27,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:27,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:27,375 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:27,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:27,383 INFO L82 PathProgramCache]: Analyzing trace with hash -850053121, now seen corresponding path program 1 times [2020-09-25 09:00:27,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:27,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488933113] [2020-09-25 09:00:27,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:27,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:28,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:29,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:30,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:30,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:32,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:32,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 09:00:32,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:00:32,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 09:00:32,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:32,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:32,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 09:00:32,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 09:00:32,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:00:32,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:32,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:32,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:32,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:32,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:00:32,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:32,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:32,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 09:00:32,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:32,982 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 09:00:32,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488933113] [2020-09-25 09:00:32,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:32,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:00:32,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545014729] [2020-09-25 09:00:32,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:32,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:33,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:33,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:33,022 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 09:00:35,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:35,710 INFO L93 Difference]: Finished difference Result 1360 states and 1895 transitions. [2020-09-25 09:00:35,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:00:35,712 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-09-25 09:00:35,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:35,741 INFO L225 Difference]: With dead ends: 1360 [2020-09-25 09:00:35,742 INFO L226 Difference]: Without dead ends: 781 [2020-09-25 09:00:35,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:00:35,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2020-09-25 09:00:35,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 746. [2020-09-25 09:00:35,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-25 09:00:35,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 914 transitions. [2020-09-25 09:00:35,896 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 914 transitions. Word has length 108 [2020-09-25 09:00:35,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:35,898 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 914 transitions. [2020-09-25 09:00:35,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 914 transitions. [2020-09-25 09:00:35,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 09:00:35,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:35,914 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:35,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:00:35,915 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:35,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:35,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1639648560, now seen corresponding path program 1 times [2020-09-25 09:00:35,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:35,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692486975] [2020-09-25 09:00:35,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:35,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:36,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:37,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 09:00:37,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:00:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1577 [2020-09-25 09:00:37,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:37,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 09:00:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 09:00:37,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:37,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:37,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:37,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:37,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:00:37,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:37,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:37,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:37,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:37,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:37,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:37,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:37,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:37,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:00:37,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:37,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:37,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:00:37,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:37,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692486975] [2020-09-25 09:00:37,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:37,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:00:37,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165661987] [2020-09-25 09:00:37,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:00:37,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:37,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:00:37,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:00:37,785 INFO L87 Difference]: Start difference. First operand 746 states and 914 transitions. Second operand 5 states. [2020-09-25 09:00:39,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:39,973 INFO L93 Difference]: Finished difference Result 1928 states and 2459 transitions. [2020-09-25 09:00:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:00:39,974 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-09-25 09:00:39,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:39,987 INFO L225 Difference]: With dead ends: 1928 [2020-09-25 09:00:39,988 INFO L226 Difference]: Without dead ends: 1206 [2020-09-25 09:00:39,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:00:39,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2020-09-25 09:00:40,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1036. [2020-09-25 09:00:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-09-25 09:00:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1250 transitions. [2020-09-25 09:00:40,058 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1250 transitions. Word has length 129 [2020-09-25 09:00:40,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:40,059 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1250 transitions. [2020-09-25 09:00:40,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:00:40,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1250 transitions. [2020-09-25 09:00:40,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 09:00:40,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:40,070 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:40,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:00:40,070 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:40,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:40,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1999519641, now seen corresponding path program 1 times [2020-09-25 09:00:40,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:40,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626756178] [2020-09-25 09:00:40,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:40,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:40,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:40,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:40,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:40,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:40,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:41,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:45,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:45,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 09:00:45,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:45,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4977 [2020-09-25 09:00:45,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:45,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:45,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:00:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:00:45,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:00:45,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:45,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:45,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:45,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:45,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:45,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:45,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 09:00:45,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:45,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:45,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:00:45,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:45,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:00:45,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:45,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:45,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:45,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:45,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 09:00:45,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:45,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 09:00:45,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:45,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:00:45,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:00:45,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626756178] [2020-09-25 09:00:45,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:00:45,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 09:00:45,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259480911] [2020-09-25 09:00:45,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:00:45,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:45,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:00:45,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:00:45,412 INFO L87 Difference]: Start difference. First operand 1036 states and 1250 transitions. Second operand 8 states. [2020-09-25 09:00:48,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:48,210 INFO L93 Difference]: Finished difference Result 3198 states and 4083 transitions. [2020-09-25 09:00:48,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 09:00:48,211 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2020-09-25 09:00:48,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:48,225 INFO L225 Difference]: With dead ends: 3198 [2020-09-25 09:00:48,225 INFO L226 Difference]: Without dead ends: 1974 [2020-09-25 09:00:48,232 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-25 09:00:48,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2020-09-25 09:00:48,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1755. [2020-09-25 09:00:48,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-09-25 09:00:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2060 transitions. [2020-09-25 09:00:48,327 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2060 transitions. Word has length 133 [2020-09-25 09:00:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:48,329 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 2060 transitions. [2020-09-25 09:00:48,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:00:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2060 transitions. [2020-09-25 09:00:48,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 09:00:48,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:48,335 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:48,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:00:48,336 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:48,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:48,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1160097473, now seen corresponding path program 1 times [2020-09-25 09:00:48,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:48,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65588083] [2020-09-25 09:00:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:48,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:48,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:48,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:48,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:48,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:53,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 09:00:53,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 09:00:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 09:00:53,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:53,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:00:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:00:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:00:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:53,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:53,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:53,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:53,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:53,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 09:00:53,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:53,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:53,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:00:53,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:53,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:53,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:53,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:53,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:53,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:53,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:53,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 09:00:53,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:53,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:53,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:53,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:53,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:53,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:53,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 09:00:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:53,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:53,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:53,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 09:00:53,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:53,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 09:00:53,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:53,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:53,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:00:53,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 09:00:53,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65588083] [2020-09-25 09:00:53,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:53,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:00:53,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527849193] [2020-09-25 09:00:53,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:00:53,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:53,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:00:53,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:00:53,947 INFO L87 Difference]: Start difference. First operand 1755 states and 2060 transitions. Second operand 9 states. [2020-09-25 09:00:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:00:56,765 INFO L93 Difference]: Finished difference Result 4156 states and 4981 transitions. [2020-09-25 09:00:56,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 09:00:56,766 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 154 [2020-09-25 09:00:56,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:00:56,780 INFO L225 Difference]: With dead ends: 4156 [2020-09-25 09:00:56,781 INFO L226 Difference]: Without dead ends: 2425 [2020-09-25 09:00:56,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-09-25 09:00:56,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2020-09-25 09:00:56,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2099. [2020-09-25 09:00:56,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2099 states. [2020-09-25 09:00:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2390 transitions. [2020-09-25 09:00:56,869 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2390 transitions. Word has length 154 [2020-09-25 09:00:56,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:00:56,869 INFO L479 AbstractCegarLoop]: Abstraction has 2099 states and 2390 transitions. [2020-09-25 09:00:56,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:00:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2390 transitions. [2020-09-25 09:00:56,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 09:00:56,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:00:56,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:00:56,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:00:56,876 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:00:56,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:00:56,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1346264804, now seen corresponding path program 1 times [2020-09-25 09:00:56,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:00:56,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909108950] [2020-09-25 09:00:56,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:00:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:56,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:57,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:58,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 09:00:58,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:58,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1175 [2020-09-25 09:00:58,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:58,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:00:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 09:00:58,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 09:00:58,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:58,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:00:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:58,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:58,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:00:58,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 09:00:58,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:58,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:00:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:58,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:00:58,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:58,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:00:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:58,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:58,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 09:00:58,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:58,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 09:00:58,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:58,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:00:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:00:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 09:00:58,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:58,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 09:00:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:58,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:58,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 09:00:58,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:00:58,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 09:00:58,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:58,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:58,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:58,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:58,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:00:58,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:58,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 09:00:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:00:58,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:00:58,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:00:58,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 09:00:58,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:00:58,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 09:00:58,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:00:58,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:00:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:00:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:00:58,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:00:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:00:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 09:00:58,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909108950] [2020-09-25 09:00:58,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:00:58,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 09:00:58,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737025239] [2020-09-25 09:00:58,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 09:00:58,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:00:58,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 09:00:58,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 09:00:58,594 INFO L87 Difference]: Start difference. First operand 2099 states and 2390 transitions. Second operand 9 states. [2020-09-25 09:00:59,335 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-25 09:01:01,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:01,146 INFO L93 Difference]: Finished difference Result 5442 states and 6895 transitions. [2020-09-25 09:01:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 09:01:01,148 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 09:01:01,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:01,171 INFO L225 Difference]: With dead ends: 5442 [2020-09-25 09:01:01,171 INFO L226 Difference]: Without dead ends: 3324 [2020-09-25 09:01:01,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2020-09-25 09:01:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3324 states. [2020-09-25 09:01:01,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3324 to 2734. [2020-09-25 09:01:01,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2734 states. [2020-09-25 09:01:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2734 states to 2734 states and 3108 transitions. [2020-09-25 09:01:01,280 INFO L78 Accepts]: Start accepts. Automaton has 2734 states and 3108 transitions. Word has length 171 [2020-09-25 09:01:01,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:01,280 INFO L479 AbstractCegarLoop]: Abstraction has 2734 states and 3108 transitions. [2020-09-25 09:01:01,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 09:01:01,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2734 states and 3108 transitions. [2020-09-25 09:01:01,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 09:01:01,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:01,288 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:01,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:01:01,289 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:01,289 INFO L82 PathProgramCache]: Analyzing trace with hash 900247765, now seen corresponding path program 1 times [2020-09-25 09:01:01,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:01,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588595980] [2020-09-25 09:01:01,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:01,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:01,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:01,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:02,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:02,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:03,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:03,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:06,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:06,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 09:01:06,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:01:06,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 09:01:06,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:06,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 09:01:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 09:01:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 09:01:06,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:06,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:01:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:06,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:06,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:06,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 09:01:06,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:06,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 09:01:06,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:06,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:06,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:01:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:01:06,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 09:01:06,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:06,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 09:01:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:06,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:06,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:06,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 09:01:06,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:06,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 09:01:06,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:06,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:06,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:01:06,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:06,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 09:01:06,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:01:06,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-25 09:01:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:06,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:06,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:01:06,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 09:01:06,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:01:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 09:01:06,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:01:06,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:01:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:01:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:01:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 09:01:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:01:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:01:06,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588595980] [2020-09-25 09:01:06,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:01:06,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:01:06,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943511730] [2020-09-25 09:01:06,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:01:06,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:01:06,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:01:06,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:01:06,851 INFO L87 Difference]: Start difference. First operand 2734 states and 3108 transitions. Second operand 10 states. [2020-09-25 09:01:08,730 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-25 09:01:10,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:01:10,129 INFO L93 Difference]: Finished difference Result 7110 states and 8339 transitions. [2020-09-25 09:01:10,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-25 09:01:10,130 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 176 [2020-09-25 09:01:10,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:01:10,151 INFO L225 Difference]: With dead ends: 7110 [2020-09-25 09:01:10,151 INFO L226 Difference]: Without dead ends: 4541 [2020-09-25 09:01:10,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-09-25 09:01:10,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2020-09-25 09:01:10,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4210. [2020-09-25 09:01:10,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4210 states. [2020-09-25 09:01:10,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 4905 transitions. [2020-09-25 09:01:10,275 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 4905 transitions. Word has length 176 [2020-09-25 09:01:10,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:01:10,276 INFO L479 AbstractCegarLoop]: Abstraction has 4210 states and 4905 transitions. [2020-09-25 09:01:10,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:01:10,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 4905 transitions. [2020-09-25 09:01:10,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 09:01:10,288 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:01:10,289 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:01:10,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:01:10,289 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:01:10,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:01:10,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1085624187, now seen corresponding path program 1 times [2020-09-25 09:01:10,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:01:10,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322385922] [2020-09-25 09:01:10,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:01:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:01:10,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:10,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:10,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:12,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:13,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:13,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:13,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:13,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:01:13,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking...