/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:02,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:02,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:02,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:02,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:02,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:02,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:02,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:02,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:02,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:02,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:02,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:02,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:02,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:02,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:02,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:02,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:02,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:02,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:02,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:02,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:02,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:02,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:02,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:02,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:02,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:02,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:02,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:02,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:02,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:02,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:02,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:02,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:02,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:02,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:02,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:02,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:02,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:02,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:02,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:02,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:02,297 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 14:41:02,344 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:02,344 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:02,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:02,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:02,347 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:02,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:02,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:02,348 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:02,348 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:02,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:02,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:02,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:02,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:02,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:02,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:02,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:02,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:02,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:02,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:02,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:02,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:02,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:02,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:02,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:02,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:02,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:02,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:02,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:02,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:02,354 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:41:02,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:02,854 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:02,860 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:02,862 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:02,863 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:02,864 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 14:41:02,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c16cd0860/0bbbc850c3f641f8bfab22d5763c215f/FLAG3fbb031d5 [2020-09-25 14:41:03,645 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:03,646 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 14:41:03,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c16cd0860/0bbbc850c3f641f8bfab22d5763c215f/FLAG3fbb031d5 [2020-09-25 14:41:03,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c16cd0860/0bbbc850c3f641f8bfab22d5763c215f [2020-09-25 14:41:03,881 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:03,887 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:03,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:03,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:03,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:03,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:03" (1/1) ... [2020-09-25 14:41:03,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cbac012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:03, skipping insertion in model container [2020-09-25 14:41:03,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:03" (1/1) ... [2020-09-25 14:41:03,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:03,959 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:04,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:04,489 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:04,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:04,732 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:04,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:04 WrapperNode [2020-09-25 14:41:04,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:04,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:04,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:04,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:04,748 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:04" (1/1) ... [2020-09-25 14:41:04,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:04" (1/1) ... [2020-09-25 14:41:04,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:04" (1/1) ... [2020-09-25 14:41:04,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:04" (1/1) ... [2020-09-25 14:41:04,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:04" (1/1) ... [2020-09-25 14:41:04,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:04" (1/1) ... [2020-09-25 14:41:04,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:04" (1/1) ... [2020-09-25 14:41:04,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:04,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:04,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:04,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:04,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:04" (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 14:41:04,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:04,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:04,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:04,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:04,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:04,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:06,426 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:06,429 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:06,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:06 BoogieIcfgContainer [2020-09-25 14:41:06,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:06,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:06,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:06,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:06,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:03" (1/3) ... [2020-09-25 14:41:06,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:06, skipping insertion in model container [2020-09-25 14:41:06,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:04" (2/3) ... [2020-09-25 14:41:06,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60447c24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:06, skipping insertion in model container [2020-09-25 14:41:06,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:06" (3/3) ... [2020-09-25 14:41:06,458 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label02.c [2020-09-25 14:41:06,470 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:06,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:06,509 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:06,544 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:06,544 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:06,545 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:06,545 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:06,545 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:06,545 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:06,545 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:06,546 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:41:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 14:41:06,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:06,592 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] [2020-09-25 14:41:06,593 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:06,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:06,601 INFO L82 PathProgramCache]: Analyzing trace with hash 613515831, now seen corresponding path program 1 times [2020-09-25 14:41:06,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:06,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [982380634] [2020-09-25 14:41:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:07,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:07,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:07,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 14:41:07,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:07,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1090 [2020-09-25 14:41:07,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:07,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:07,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:07,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:07,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:41:07,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 14:41:08,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:08,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:08,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:08,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:08,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:41:08,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:08,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:08,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:08,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:41:08,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:08,153 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 14:41:08,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [982380634] [2020-09-25 14:41:08,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:08,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:41:08,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089560543] [2020-09-25 14:41:08,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:41:08,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:08,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:41:08,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:41:08,188 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:41:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:10,317 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 14:41:10,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:10,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-09-25 14:41:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:10,344 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 14:41:10,345 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 14:41:10,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 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 14:41:10,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 14:41:10,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 14:41:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 14:41:10,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 14:41:10,455 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 78 [2020-09-25 14:41:10,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:10,456 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 14:41:10,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:41:10,457 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 14:41:10,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 14:41:10,466 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:10,466 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:41:10,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:10,467 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:10,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:10,467 INFO L82 PathProgramCache]: Analyzing trace with hash 970656551, now seen corresponding path program 1 times [2020-09-25 14:41:10,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:10,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151050445] [2020-09-25 14:41:10,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:10,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:10,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:11,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:15,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 14:41:15,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:15,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:41:15,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:15,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:41:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:41:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 14:41:15,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:15,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:15,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:15,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:15,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:15,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:41:15,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:15,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:41:15,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:15,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:15,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:15,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:15,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:15,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 14:41:15,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:15,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:15,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:41:15,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:15,937 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 54 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:41:15,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151050445] [2020-09-25 14:41:15,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:15,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:15,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407331582] [2020-09-25 14:41:15,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:15,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:15,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:15,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:15,942 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 14:41:17,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:17,793 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 14:41:17,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:17,794 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-09-25 14:41:17,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:17,801 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 14:41:17,801 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 14:41:17,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:41:17,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 14:41:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 14:41:17,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 14:41:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 14:41:17,845 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 157 [2020-09-25 14:41:17,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:17,846 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 14:41:17,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 14:41:17,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 14:41:17,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:17,852 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:41:17,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:17,853 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:17,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:17,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1315129595, now seen corresponding path program 1 times [2020-09-25 14:41:17,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:17,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952037901] [2020-09-25 14:41:17,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:17,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:18,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:18,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:19,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:21,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:22,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:22,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 14:41:22,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:22,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:41:22,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:22,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:22,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:41:22,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:41:22,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 14:41:22,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:23,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:23,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:23,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:23,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 14:41:23,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:23,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:41:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:23,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:41:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:23,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:23,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:23,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:23,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:41:23,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:23,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-25 14:41:23,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:23,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 14:41:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:23,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952037901] [2020-09-25 14:41:23,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:23,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:41:23,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687131242] [2020-09-25 14:41:23,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:41:23,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:23,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:41:23,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:23,524 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 12 states. [2020-09-25 14:41:26,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:26,021 INFO L93 Difference]: Finished difference Result 1614 states and 2050 transitions. [2020-09-25 14:41:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:41:26,022 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 167 [2020-09-25 14:41:26,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:26,032 INFO L225 Difference]: With dead ends: 1614 [2020-09-25 14:41:26,032 INFO L226 Difference]: Without dead ends: 1015 [2020-09-25 14:41:26,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:41:26,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2020-09-25 14:41:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 995. [2020-09-25 14:41:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 14:41:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1212 transitions. [2020-09-25 14:41:26,088 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1212 transitions. Word has length 167 [2020-09-25 14:41:26,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:26,090 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1212 transitions. [2020-09-25 14:41:26,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:41:26,090 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1212 transitions. [2020-09-25 14:41:26,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 14:41:26,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:26,101 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:41:26,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:26,102 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:26,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:26,102 INFO L82 PathProgramCache]: Analyzing trace with hash -8332915, now seen corresponding path program 1 times [2020-09-25 14:41:26,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:26,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802010992] [2020-09-25 14:41:26,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:26,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:26,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:26,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:27,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:28,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 14:41:28,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:41:28,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2429 [2020-09-25 14:41:28,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:28,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:28,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:28,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:41:28,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:41:28,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:41:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:28,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:28,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:28,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:41:28,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:28,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:28,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:41:28,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:28,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:28,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:28,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:28,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 14:41:28,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:28,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-09-25 14:41:28,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:28,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:28,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:41:28,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:28,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802010992] [2020-09-25 14:41:28,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:28,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:41:28,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287543434] [2020-09-25 14:41:28,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:28,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:28,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:28,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:28,938 INFO L87 Difference]: Start difference. First operand 995 states and 1212 transitions. Second operand 7 states. [2020-09-25 14:41:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:31,402 INFO L93 Difference]: Finished difference Result 2193 states and 2790 transitions. [2020-09-25 14:41:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:41:31,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-09-25 14:41:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:31,413 INFO L225 Difference]: With dead ends: 2193 [2020-09-25 14:41:31,414 INFO L226 Difference]: Without dead ends: 1363 [2020-09-25 14:41:31,418 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:31,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-09-25 14:41:31,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1321. [2020-09-25 14:41:31,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2020-09-25 14:41:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1568 transitions. [2020-09-25 14:41:31,473 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1568 transitions. Word has length 169 [2020-09-25 14:41:31,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:31,474 INFO L479 AbstractCegarLoop]: Abstraction has 1321 states and 1568 transitions. [2020-09-25 14:41:31,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:31,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1568 transitions. [2020-09-25 14:41:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 14:41:31,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:31,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:31,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:41:31,481 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:31,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:31,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1558755997, now seen corresponding path program 1 times [2020-09-25 14:41:31,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:31,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981896363] [2020-09-25 14:41:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:31,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:32,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:36,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 14:41:36,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:36,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:41:36,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:36,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:41:36,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 14:41:36,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:36,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:36,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:36,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:36,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:36,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:41:36,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:36,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:36,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:36,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:36,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:36,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:36,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:36,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:36,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 14:41:36,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:36,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:36,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:41:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:36,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:41:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:36,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:36,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:36,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 14:41:36,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:36,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 14:41:36,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:36,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:36,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:41:36,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:37,061 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:41:37,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981896363] [2020-09-25 14:41:37,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:37,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:41:37,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873303272] [2020-09-25 14:41:37,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:41:37,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:37,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:41:37,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:41:37,064 INFO L87 Difference]: Start difference. First operand 1321 states and 1568 transitions. Second operand 7 states. [2020-09-25 14:41:39,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:39,258 INFO L93 Difference]: Finished difference Result 2493 states and 2995 transitions. [2020-09-25 14:41:39,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:41:39,258 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-09-25 14:41:39,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:39,267 INFO L225 Difference]: With dead ends: 2493 [2020-09-25 14:41:39,267 INFO L226 Difference]: Without dead ends: 1337 [2020-09-25 14:41:39,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:39,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2020-09-25 14:41:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1167. [2020-09-25 14:41:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-09-25 14:41:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1299 transitions. [2020-09-25 14:41:39,318 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1299 transitions. Word has length 248 [2020-09-25 14:41:39,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:39,318 INFO L479 AbstractCegarLoop]: Abstraction has 1167 states and 1299 transitions. [2020-09-25 14:41:39,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:41:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1299 transitions. [2020-09-25 14:41:39,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-25 14:41:39,325 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:39,326 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:39,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:41:39,326 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:39,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:39,327 INFO L82 PathProgramCache]: Analyzing trace with hash 806703639, now seen corresponding path program 1 times [2020-09-25 14:41:39,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:39,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883115168] [2020-09-25 14:41:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:39,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:42,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:44,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-25 14:41:44,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:41:44,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:41:44,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:44,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:41:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:41:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 14:41:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:44,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:44,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:44,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:44,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:44,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:41:44,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:44,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:41:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:44,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:41:44,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:44,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:44,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:44,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:44,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:44,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 14:41:44,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:44,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:44,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:41:44,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:41:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:44,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:45,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:45,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:45,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 14:41:45,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:45,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-09-25 14:41:45,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:45,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:45,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:41:45,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:45,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 14:41:45,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:41:45,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883115168] [2020-09-25 14:41:45,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:45,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:41:45,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985113609] [2020-09-25 14:41:45,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:41:45,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:45,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:41:45,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:41:45,356 INFO L87 Difference]: Start difference. First operand 1167 states and 1299 transitions. Second operand 8 states. [2020-09-25 14:41:49,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:49,262 INFO L93 Difference]: Finished difference Result 2835 states and 3231 transitions. [2020-09-25 14:41:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:41:49,263 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 279 [2020-09-25 14:41:49,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:49,271 INFO L225 Difference]: With dead ends: 2835 [2020-09-25 14:41:49,272 INFO L226 Difference]: Without dead ends: 1804 [2020-09-25 14:41:49,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:49,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2020-09-25 14:41:49,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1778. [2020-09-25 14:41:49,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1778 states. [2020-09-25 14:41:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 1984 transitions. [2020-09-25 14:41:49,320 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 1984 transitions. Word has length 279 [2020-09-25 14:41:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:49,321 INFO L479 AbstractCegarLoop]: Abstraction has 1778 states and 1984 transitions. [2020-09-25 14:41:49,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:41:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 1984 transitions. [2020-09-25 14:41:49,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2020-09-25 14:41:49,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:49,328 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:49,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:41:49,329 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:49,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:49,329 INFO L82 PathProgramCache]: Analyzing trace with hash 759797168, now seen corresponding path program 1 times [2020-09-25 14:41:49,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:49,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266292955] [2020-09-25 14:41:49,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:49,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:50,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking...