/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/Problem01_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:31,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:31,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:31,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:31,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:31,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:31,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:31,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:31,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:31,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:31,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:31,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:31,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:31,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:31,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:31,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:31,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:31,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:31,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:31,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:31,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:31,240 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:31,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:31,242 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:31,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:31,245 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:31,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:31,247 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:31,247 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:31,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:31,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:31,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:31,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:31,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:31,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:31,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:31,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:31,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:31,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:31,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:31,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:31,256 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 05:34:31,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:31,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:31,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:31,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:31,284 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:31,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:31,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:31,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:31,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:31,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:31,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:31,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:31,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:31,286 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:31,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:31,286 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:31,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:31,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:31,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:31,287 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:31,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:31,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:31,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:31,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:31,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:31,288 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:31,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:31,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:31,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:31,289 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 05:34:31,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:31,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:31,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:31,812 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:31,812 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:31,813 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 05:34:31,914 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a757092f5/3f6369abec5c4bc5bbfac92acdc833c4/FLAG4fd0a6ddd [2020-09-25 05:34:32,593 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:32,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 05:34:32,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a757092f5/3f6369abec5c4bc5bbfac92acdc833c4/FLAG4fd0a6ddd [2020-09-25 05:34:32,845 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a757092f5/3f6369abec5c4bc5bbfac92acdc833c4 [2020-09-25 05:34:32,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:32,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:32,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:32,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:32,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:32,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:32" (1/1) ... [2020-09-25 05:34:32,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788ef5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:32, skipping insertion in model container [2020-09-25 05:34:32,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:32" (1/1) ... [2020-09-25 05:34:32,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:32,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:33,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:33,492 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:33,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:33,720 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:33,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:33 WrapperNode [2020-09-25 05:34:33,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:33,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:33,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:33,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:33,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:33" (1/1) ... [2020-09-25 05:34:33,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:33" (1/1) ... [2020-09-25 05:34:33,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:33" (1/1) ... [2020-09-25 05:34:33,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:33" (1/1) ... [2020-09-25 05:34:33,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:33" (1/1) ... [2020-09-25 05:34:33,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:33" (1/1) ... [2020-09-25 05:34:33,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:33" (1/1) ... [2020-09-25 05:34:33,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:33,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:33,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:33,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:33,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:33" (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 05:34:33,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:33,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:33,962 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:33,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:33,963 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:33,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:33,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:33,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:34:35,388 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:34:35,388 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:34:35,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:35 BoogieIcfgContainer [2020-09-25 05:34:35,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:34:35,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:34:35,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:34:35,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:34:35,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:32" (1/3) ... [2020-09-25 05:34:35,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76839004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:35, skipping insertion in model container [2020-09-25 05:34:35,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:33" (2/3) ... [2020-09-25 05:34:35,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76839004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:35, skipping insertion in model container [2020-09-25 05:34:35,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:35" (3/3) ... [2020-09-25 05:34:35,408 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-09-25 05:34:35,420 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:34:35,433 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:34:35,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:34:35,493 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:34:35,494 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:34:35,494 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:34:35,494 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:34:35,494 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:34:35,494 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:34:35,495 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:34:35,495 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:34:35,528 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:34:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 05:34:35,550 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:35,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:35,552 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:35,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:35,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1970187929, now seen corresponding path program 1 times [2020-09-25 05:34:35,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:35,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096151413] [2020-09-25 05:34:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:36,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:36,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:37,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:40,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:40,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:40,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:40,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 05:34:40,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:40,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 05:34:40,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:40,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:40,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:34:40,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 05:34:40,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:34:41,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:41,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:41,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:41,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:41,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:41,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:34:41,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:41,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:41,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:34:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:41,283 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 05:34:41,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096151413] [2020-09-25 05:34:41,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:41,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:34:41,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148025108] [2020-09-25 05:34:41,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:34:41,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:41,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:34:41,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:34:41,322 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 05:34:43,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:43,401 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 05:34:43,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:34:43,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 05:34:43,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:43,430 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 05:34:43,430 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 05:34:43,446 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 05:34:43,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 05:34:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 05:34:43,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:34:43,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 05:34:43,571 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 150 [2020-09-25 05:34:43,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:43,572 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 05:34:43,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:34:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 05:34:43,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 05:34:43,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:43,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:43,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:34:43,582 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:43,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:43,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1973679864, now seen corresponding path program 1 times [2020-09-25 05:34:43,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:43,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780371182] [2020-09-25 05:34:43,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:43,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:44,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:48,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 05:34:48,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:48,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 05:34:48,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:48,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 05:34:48,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 05:34:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 05:34:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:49,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:49,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:49,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:49,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:49,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:34:49,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:49,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:49,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:49,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:49,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:49,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:49,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:49,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:49,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:49,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:34:49,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:49,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 05:34:49,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:49,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:49,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:34:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:49,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:34:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:49,516 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 05:34:49,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780371182] [2020-09-25 05:34:49,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:49,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 05:34:49,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419529221] [2020-09-25 05:34:49,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 05:34:49,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:49,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 05:34:49,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 05:34:49,521 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 9 states. [2020-09-25 05:34:53,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:53,380 INFO L93 Difference]: Finished difference Result 1761 states and 2279 transitions. [2020-09-25 05:34:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 05:34:53,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 05:34:53,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:53,389 INFO L225 Difference]: With dead ends: 1761 [2020-09-25 05:34:53,390 INFO L226 Difference]: Without dead ends: 887 [2020-09-25 05:34:53,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 05:34:53,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2020-09-25 05:34:53,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 860. [2020-09-25 05:34:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 860 states. [2020-09-25 05:34:53,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 981 transitions. [2020-09-25 05:34:53,442 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 981 transitions. Word has length 171 [2020-09-25 05:34:53,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:53,443 INFO L479 AbstractCegarLoop]: Abstraction has 860 states and 981 transitions. [2020-09-25 05:34:53,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 05:34:53,443 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 981 transitions. [2020-09-25 05:34:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 05:34:53,448 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:53,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:53,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:53,449 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:53,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:53,449 INFO L82 PathProgramCache]: Analyzing trace with hash 276355023, now seen corresponding path program 1 times [2020-09-25 05:34:53,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:53,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853812921] [2020-09-25 05:34:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:53,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:58,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 05:34:58,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 05:34:58,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 05:34:58,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:58,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 05:34:58,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 05:34:58,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:34:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:58,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:58,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:58,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:34:58,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:58,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:58,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:58,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:58,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:58,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:58,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:34:58,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:58,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:34:58,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:58,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:58,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:58,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:58,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 05:34:58,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:58,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853812921] [2020-09-25 05:34:58,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:58,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:58,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549685361] [2020-09-25 05:34:58,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:58,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:58,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:58,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:58,872 INFO L87 Difference]: Start difference. First operand 860 states and 981 transitions. Second operand 5 states. [2020-09-25 05:35:00,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:00,602 INFO L93 Difference]: Finished difference Result 2038 states and 2406 transitions. [2020-09-25 05:35:00,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:35:00,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 05:35:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:00,610 INFO L225 Difference]: With dead ends: 2038 [2020-09-25 05:35:00,611 INFO L226 Difference]: Without dead ends: 1202 [2020-09-25 05:35:00,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:35:00,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2020-09-25 05:35:00,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1146. [2020-09-25 05:35:00,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1146 states. [2020-09-25 05:35:00,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1340 transitions. [2020-09-25 05:35:00,654 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1340 transitions. Word has length 175 [2020-09-25 05:35:00,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:00,655 INFO L479 AbstractCegarLoop]: Abstraction has 1146 states and 1340 transitions. [2020-09-25 05:35:00,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:35:00,655 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1340 transitions. [2020-09-25 05:35:00,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 05:35:00,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:00,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:00,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:35:00,662 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:00,662 INFO L82 PathProgramCache]: Analyzing trace with hash 956756217, now seen corresponding path program 1 times [2020-09-25 05:35:00,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:00,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410881612] [2020-09-25 05:35:00,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:00,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:00,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:00,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:03,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:05,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:05,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 05:35:05,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:35:05,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 05:35:05,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:05,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 05:35:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:35:05,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:05,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:05,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:05,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:05,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:05,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:35:05,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:05,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:05,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:05,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:05,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:05,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:05,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:05,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:05,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 05:35:05,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:05,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 05:35:05,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:05,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:05,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:35:05,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:05,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 05:35:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:05,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:06,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:35:06,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:06,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 05:35:06,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:06,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:35:06,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:35:06,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410881612] [2020-09-25 05:35:06,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:06,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:35:06,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410717833] [2020-09-25 05:35:06,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:35:06,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:06,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:35:06,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:35:06,181 INFO L87 Difference]: Start difference. First operand 1146 states and 1340 transitions. Second operand 7 states. [2020-09-25 05:35:08,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:08,357 INFO L93 Difference]: Finished difference Result 3160 states and 3802 transitions. [2020-09-25 05:35:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:35:08,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 216 [2020-09-25 05:35:08,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:08,373 INFO L225 Difference]: With dead ends: 3160 [2020-09-25 05:35:08,373 INFO L226 Difference]: Without dead ends: 2038 [2020-09-25 05:35:08,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:35:08,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2020-09-25 05:35:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1797. [2020-09-25 05:35:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1797 states. [2020-09-25 05:35:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2136 transitions. [2020-09-25 05:35:08,438 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2136 transitions. Word has length 216 [2020-09-25 05:35:08,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:08,439 INFO L479 AbstractCegarLoop]: Abstraction has 1797 states and 2136 transitions. [2020-09-25 05:35:08,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:35:08,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2136 transitions. [2020-09-25 05:35:08,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 05:35:08,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:08,447 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:08,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:35:08,448 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:08,448 INFO L82 PathProgramCache]: Analyzing trace with hash 19036305, now seen corresponding path program 1 times [2020-09-25 05:35:08,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:08,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [904374174] [2020-09-25 05:35:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:08,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:08,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:09,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:11,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:13,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 05:35:13,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:35:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:35:13,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:13,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:35:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 05:35:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 05:35:13,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:13,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:13,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:13,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:13,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:13,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:35:13,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:13,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:13,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:13,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:13,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:13,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:13,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:13,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 05:35:13,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:13,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 05:35:13,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:13,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:13,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:35:13,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:13,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:35:13,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:13,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 05:35:13,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:13,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:13,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 05:35:13,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:13,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 05:35:13,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:13,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:13,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:35:13,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:35:14,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [904374174] [2020-09-25 05:35:14,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:14,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:35:14,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154607558] [2020-09-25 05:35:14,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:35:14,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:14,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:35:14,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:35:14,065 INFO L87 Difference]: Start difference. First operand 1797 states and 2136 transitions. Second operand 8 states. [2020-09-25 05:35:14,692 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-09-25 05:35:17,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:17,488 INFO L93 Difference]: Finished difference Result 4719 states and 5841 transitions. [2020-09-25 05:35:17,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 05:35:17,489 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-09-25 05:35:17,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:17,504 INFO L225 Difference]: With dead ends: 4719 [2020-09-25 05:35:17,504 INFO L226 Difference]: Without dead ends: 2946 [2020-09-25 05:35:17,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:35:17,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2946 states. [2020-09-25 05:35:17,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2946 to 2847. [2020-09-25 05:35:17,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2847 states. [2020-09-25 05:35:17,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 3495 transitions. [2020-09-25 05:35:17,598 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 3495 transitions. Word has length 219 [2020-09-25 05:35:17,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:17,598 INFO L479 AbstractCegarLoop]: Abstraction has 2847 states and 3495 transitions. [2020-09-25 05:35:17,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:35:17,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 3495 transitions. [2020-09-25 05:35:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-25 05:35:17,611 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:17,611 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:35:17,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:35:17,612 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:17,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:17,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1783992526, now seen corresponding path program 1 times [2020-09-25 05:35:17,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:17,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627912536] [2020-09-25 05:35:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:17,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:17,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:17,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking...