/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:34:02,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:34:02,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:34:02,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:34:02,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:34:02,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:34:02,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:34:02,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:34:02,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:34:02,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:34:02,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:34:02,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:34:02,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:34:02,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:34:02,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:34:02,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:34:02,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:34:02,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:34:02,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:34:02,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:34:02,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:34:02,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:34:02,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:34:02,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:34:02,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:34:02,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:34:02,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:34:02,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:34:02,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:34:02,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:34:02,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:34:02,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:34:02,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:34:03,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:34:03,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:34:03,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:34:03,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:34:03,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:34:03,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:34:03,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:34:03,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:34:03,008 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 13:34:03,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:34:03,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:34:03,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:34:03,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:34:03,057 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:34:03,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:34:03,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:34:03,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:34:03,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:34:03,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:34:03,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:34:03,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:34:03,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:34:03,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:34:03,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:34:03,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:34:03,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:34:03,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:34:03,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:34:03,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:34:03,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:34:03,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:34:03,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:34:03,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:34:03,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:34:03,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:34:03,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:34:03,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:34:03,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:34:03,064 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=0.4;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:34:03,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:34:03,569 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:34:03,577 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:34:03,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:34:03,580 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:34:03,581 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 13:34:03,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1ad9879b/1a72af112a2349ca8a5029ece93ac938/FLAG8efe73c70 [2020-09-25 13:34:04,311 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:34:04,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 13:34:04,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1ad9879b/1a72af112a2349ca8a5029ece93ac938/FLAG8efe73c70 [2020-09-25 13:34:04,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1ad9879b/1a72af112a2349ca8a5029ece93ac938 [2020-09-25 13:34:04,586 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:34:04,591 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:34:04,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:04,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:34:04,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:34:04,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:04" (1/1) ... [2020-09-25 13:34:04,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629d3d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:04, skipping insertion in model container [2020-09-25 13:34:04,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:34:04" (1/1) ... [2020-09-25 13:34:04,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:34:04,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:34:05,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:05,184 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:34:05,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:34:05,432 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:34:05,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:05 WrapperNode [2020-09-25 13:34:05,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:34:05,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:34:05,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:34:05,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:34:05,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:05" (1/1) ... [2020-09-25 13:34:05,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:05" (1/1) ... [2020-09-25 13:34:05,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:05" (1/1) ... [2020-09-25 13:34:05,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:05" (1/1) ... [2020-09-25 13:34:05,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:05" (1/1) ... [2020-09-25 13:34:05,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:05" (1/1) ... [2020-09-25 13:34:05,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:05" (1/1) ... [2020-09-25 13:34:05,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:34:05,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:34:05,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:34:05,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:34:05,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:05" (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 13:34:05,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:34:05,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:34:05,654 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:34:05,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:34:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:34:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:34:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:34:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:34:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:34:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:34:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:34:07,118 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:34:07,119 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:34:07,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:07 BoogieIcfgContainer [2020-09-25 13:34:07,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:34:07,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:34:07,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:34:07,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:34:07,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:34:04" (1/3) ... [2020-09-25 13:34:07,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ffabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:07, skipping insertion in model container [2020-09-25 13:34:07,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:34:05" (2/3) ... [2020-09-25 13:34:07,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50ffabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:34:07, skipping insertion in model container [2020-09-25 13:34:07,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:34:07" (3/3) ... [2020-09-25 13:34:07,138 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-09-25 13:34:07,151 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:34:07,162 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:34:07,185 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:34:07,220 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:34:07,220 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:34:07,220 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:34:07,221 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:34:07,221 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:34:07,221 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:34:07,221 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:34:07,221 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:34:07,253 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:34:07,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 13:34:07,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:07,267 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] [2020-09-25 13:34:07,267 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:07,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:07,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times [2020-09-25 13:34:07,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:07,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244293682] [2020-09-25 13:34:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:09,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:09,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 13:34:09,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:34:09,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-09-25 13:34:09,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:09,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:09,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:09,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:34:09,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:34:09,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:09,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:09,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:09,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:09,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:09,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:34:09,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:09,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:09,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:09,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:09,257 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 13:34:09,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244293682] [2020-09-25 13:34:09,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:09,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:34:09,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788633579] [2020-09-25 13:34:09,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:34:09,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:09,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:34:09,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:34:09,299 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:34:11,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:11,460 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 13:34:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:34:11,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-09-25 13:34:11,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:11,488 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 13:34:11,488 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 13:34:11,503 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 13:34:11,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 13:34:11,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 13:34:11,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 13:34:11,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 13:34:11,606 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 80 [2020-09-25 13:34:11,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:11,607 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 13:34:11,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:34:11,607 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 13:34:11,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 13:34:11,617 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:11,618 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:11,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:34:11,618 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:11,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:11,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times [2020-09-25 13:34:11,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:11,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286775141] [2020-09-25 13:34:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:11,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:12,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:15,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:15,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 13:34:15,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:15,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4047 [2020-09-25 13:34:15,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:15,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:15,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:34:15,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 13:34:15,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:15,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:15,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:15,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:15,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:15,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:15,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:34:15,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:15,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:15,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:15,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:15,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:34:15,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:15,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:15,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:15,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:16,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:16,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:16,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:16,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 13:34:16,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:16,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:16,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:16,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 13:34:16,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:34:16,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286775141] [2020-09-25 13:34:16,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:16,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:34:16,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114387258] [2020-09-25 13:34:16,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:34:16,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:16,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:34:16,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:16,135 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 13:34:17,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:17,937 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 13:34:17,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:34:17,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 13:34:17,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:17,945 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 13:34:17,945 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 13:34:17,948 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 13:34:17,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 13:34:17,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 13:34:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 13:34:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 13:34:18,002 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 159 [2020-09-25 13:34:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:18,003 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 13:34:18,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 13:34:18,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 13:34:18,012 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:18,013 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, 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] [2020-09-25 13:34:18,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:34:18,013 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:18,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:18,014 INFO L82 PathProgramCache]: Analyzing trace with hash -663007827, now seen corresponding path program 1 times [2020-09-25 13:34:18,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:18,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990953405] [2020-09-25 13:34:18,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:18,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:21,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:21,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:21,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:23,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:23,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 13:34:23,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:34:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 13:34:23,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:23,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:23,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 13:34:23,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:23,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:23,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:23,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:23,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:23,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:34:23,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:23,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:23,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:23,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:23,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:23,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:23,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:23,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:23,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:23,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-09-25 13:34:23,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:23,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:23,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:23,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990953405] [2020-09-25 13:34:23,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:23,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:34:23,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180309901] [2020-09-25 13:34:23,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:23,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:23,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:23,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:23,547 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 13:34:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:27,027 INFO L93 Difference]: Finished difference Result 1984 states and 2586 transitions. [2020-09-25 13:34:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:34:27,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-25 13:34:27,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:27,040 INFO L225 Difference]: With dead ends: 1984 [2020-09-25 13:34:27,041 INFO L226 Difference]: Without dead ends: 1454 [2020-09-25 13:34:27,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:34:27,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2020-09-25 13:34:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1361. [2020-09-25 13:34:27,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2020-09-25 13:34:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1737 transitions. [2020-09-25 13:34:27,116 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1737 transitions. Word has length 169 [2020-09-25 13:34:27,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:27,117 INFO L479 AbstractCegarLoop]: Abstraction has 1361 states and 1737 transitions. [2020-09-25 13:34:27,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:27,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1737 transitions. [2020-09-25 13:34:27,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 13:34:27,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:27,122 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, 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 13:34:27,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:34:27,122 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:27,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:27,123 INFO L82 PathProgramCache]: Analyzing trace with hash 715941429, now seen corresponding path program 1 times [2020-09-25 13:34:27,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:27,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382412110] [2020-09-25 13:34:27,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:27,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:27,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:28,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:28,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 13:34:28,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:34:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1596 [2020-09-25 13:34:28,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:28,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-09-25 13:34:28,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:34:28,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:28,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:28,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:28,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:28,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:28,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:28,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:34:28,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:28,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:28,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:34:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:28,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:34:28,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:28,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:28,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:28,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 13:34:28,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:28,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 13:34:28,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:28,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:28,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:34:28,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:29,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382412110] [2020-09-25 13:34:29,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:29,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:34:29,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312237996] [2020-09-25 13:34:29,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:34:29,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:29,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:34:29,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:34:29,062 INFO L87 Difference]: Start difference. First operand 1361 states and 1737 transitions. Second operand 5 states. [2020-09-25 13:34:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:31,204 INFO L93 Difference]: Finished difference Result 3343 states and 4437 transitions. [2020-09-25 13:34:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:34:31,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-09-25 13:34:31,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:31,221 INFO L225 Difference]: With dead ends: 3343 [2020-09-25 13:34:31,222 INFO L226 Difference]: Without dead ends: 2147 [2020-09-25 13:34:31,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:34:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2020-09-25 13:34:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 2123. [2020-09-25 13:34:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2123 states. [2020-09-25 13:34:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 2591 transitions. [2020-09-25 13:34:31,310 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 2591 transitions. Word has length 171 [2020-09-25 13:34:31,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:31,310 INFO L479 AbstractCegarLoop]: Abstraction has 2123 states and 2591 transitions. [2020-09-25 13:34:31,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:34:31,311 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 2591 transitions. [2020-09-25 13:34:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 13:34:31,320 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:31,320 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, 3, 3, 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 13:34:31,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:34:31,321 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:31,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:31,321 INFO L82 PathProgramCache]: Analyzing trace with hash -883468643, now seen corresponding path program 1 times [2020-09-25 13:34:31,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:31,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1480394342] [2020-09-25 13:34:31,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:31,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:31,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:32,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:34,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:36,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 13:34:36,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:34:36,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 13:34:36,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:36,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:36,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:34:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:34:36,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:36,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:36,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:36,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:36,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:34:36,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:36,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:36,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:36,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:36,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:36,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:36,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 13:34:36,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:36,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:36,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:36,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:34:36,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:36,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:36,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:36,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:36,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 13:34:36,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:36,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:34:37,083 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 13:34:37,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1480394342] [2020-09-25 13:34:37,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:37,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:34:37,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614189442] [2020-09-25 13:34:37,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:34:37,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:37,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:34:37,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:34:37,086 INFO L87 Difference]: Start difference. First operand 2123 states and 2591 transitions. Second operand 9 states. [2020-09-25 13:34:41,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:41,262 INFO L93 Difference]: Finished difference Result 5181 states and 6615 transitions. [2020-09-25 13:34:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:34:41,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 248 [2020-09-25 13:34:41,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:41,285 INFO L225 Difference]: With dead ends: 5181 [2020-09-25 13:34:41,285 INFO L226 Difference]: Without dead ends: 3223 [2020-09-25 13:34:41,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:34:41,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2020-09-25 13:34:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 3132. [2020-09-25 13:34:41,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3132 states. [2020-09-25 13:34:41,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 3934 transitions. [2020-09-25 13:34:41,403 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 3934 transitions. Word has length 248 [2020-09-25 13:34:41,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:41,403 INFO L479 AbstractCegarLoop]: Abstraction has 3132 states and 3934 transitions. [2020-09-25 13:34:41,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:34:41,404 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 3934 transitions. [2020-09-25 13:34:41,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-25 13:34:41,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:41,411 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:34:41,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:41,411 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:41,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:41,412 INFO L82 PathProgramCache]: Analyzing trace with hash 889304234, now seen corresponding path program 1 times [2020-09-25 13:34:41,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:41,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216595755] [2020-09-25 13:34:41,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:41,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:41,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:43,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:43,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:45,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:46,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 13:34:46,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:34:46,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 13:34:46,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:46,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:34:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:34:46,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 13:34:46,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:46,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:46,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:46,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:46,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:46,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:34:46,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:46,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:46,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:34:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:34:46,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:46,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:46,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:46,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:46,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:46,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:46,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 13:34:46,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:46,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:46,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:46,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:46,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 13:34:46,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:47,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 13:34:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:47,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:47,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:47,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 13:34:47,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:34:47,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-09-25 13:34:47,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:47,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:47,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 13:34:47,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:47,798 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 13:34:47,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216595755] [2020-09-25 13:34:47,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:47,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:34:47,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610035504] [2020-09-25 13:34:47,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:34:47,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:47,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:34:47,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:34:47,804 INFO L87 Difference]: Start difference. First operand 3132 states and 3934 transitions. Second operand 9 states.