/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=0.2 --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_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:29,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:29,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:29,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:29,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:29,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:29,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:29,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:29,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:29,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:29,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:29,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:29,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:29,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:29,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:29,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:29,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:29,668 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:29,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:29,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:29,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:29,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:29,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:29,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:29,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:29,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:29,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:29,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:29,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:29,710 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:29,710 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:29,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:29,712 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:29,713 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:29,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:29,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:29,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:29,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:29,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:29,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:29,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:29,721 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 11:19:29,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:29,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:29,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:29,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:29,770 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:29,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:29,771 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:29,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:29,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:29,772 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:29,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:29,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:29,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:29,774 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:29,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:29,774 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:29,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:29,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:29,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:29,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:29,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:29,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:29,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:29,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:29,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:29,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:29,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:29,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:29,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:29,777 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:19:30,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:30,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:30,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:30,313 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:30,314 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:30,315 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 11:19:30,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ac2ffe74/d52b0746e68e4849be5f25a415a57715/FLAG03d85f551 [2020-09-25 11:19:31,075 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:31,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-09-25 11:19:31,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ac2ffe74/d52b0746e68e4849be5f25a415a57715/FLAG03d85f551 [2020-09-25 11:19:31,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ac2ffe74/d52b0746e68e4849be5f25a415a57715 [2020-09-25 11:19:31,341 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:31,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:31,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:31,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:31,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:31,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:31" (1/1) ... [2020-09-25 11:19:31,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:31, skipping insertion in model container [2020-09-25 11:19:31,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:31" (1/1) ... [2020-09-25 11:19:31,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:31,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:31,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:31,969 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:32,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:32,250 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:32,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:32 WrapperNode [2020-09-25 11:19:32,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:32,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:32,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:32,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:32,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:32" (1/1) ... [2020-09-25 11:19:32,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:32" (1/1) ... [2020-09-25 11:19:32,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:32" (1/1) ... [2020-09-25 11:19:32,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:32" (1/1) ... [2020-09-25 11:19:32,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:32" (1/1) ... [2020-09-25 11:19:32,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:32" (1/1) ... [2020-09-25 11:19:32,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:32" (1/1) ... [2020-09-25 11:19:32,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:32,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:32,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:32,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:32,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:32" (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 11:19:32,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:32,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:32,471 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:32,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:32,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:32,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:32,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:34,058 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:34,060 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:34,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:34 BoogieIcfgContainer [2020-09-25 11:19:34,077 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:34,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:34,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:34,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:34,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:31" (1/3) ... [2020-09-25 11:19:34,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c5de47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:34, skipping insertion in model container [2020-09-25 11:19:34,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:32" (2/3) ... [2020-09-25 11:19:34,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c5de47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:34, skipping insertion in model container [2020-09-25 11:19:34,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:34" (3/3) ... [2020-09-25 11:19:34,092 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-09-25 11:19:34,108 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:34,125 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:34,151 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:34,193 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:34,194 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:34,194 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:34,194 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:34,195 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:34,195 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:34,195 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:34,195 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:34,237 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:34,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 11:19:34,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:34,257 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] [2020-09-25 11:19:34,257 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:34,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:34,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1046899727, now seen corresponding path program 1 times [2020-09-25 11:19:34,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:34,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866112816] [2020-09-25 11:19:34,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:35,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 11:19:35,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:35,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-09-25 11:19:35,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:35,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:35,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 11:19:35,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:19:35,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:35,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:35,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 11:19:35,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:35,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:35,356 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 11:19:35,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866112816] [2020-09-25 11:19:35,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:35,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:19:35,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406285241] [2020-09-25 11:19:35,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:19:35,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:35,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:19:35,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:35,398 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 11:19:38,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:38,250 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 11:19:38,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:19:38,252 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-09-25 11:19:38,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:38,301 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 11:19:38,301 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 11:19:38,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:38,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 11:19:38,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 11:19:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 11:19:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 11:19:38,441 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 68 [2020-09-25 11:19:38,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:38,442 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 11:19:38,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:19:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 11:19:38,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 11:19:38,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:38,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:38,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:38,454 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:38,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:38,455 INFO L82 PathProgramCache]: Analyzing trace with hash -160289432, now seen corresponding path program 1 times [2020-09-25 11:19:38,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:38,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836372086] [2020-09-25 11:19:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:38,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:38,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:39,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:40,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:40,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:43,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:43,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:43,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 11:19:43,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:43,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:19:43,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:43,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:43,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:19:43,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 11:19:43,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:43,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:43,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:43,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:43,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:43,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:19:43,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:43,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:43,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:43,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:43,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:43,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:43,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:44,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:19:44,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:44,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-09-25 11:19:44,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:44,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:44,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:44,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:44,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 11:19:44,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:44,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836372086] [2020-09-25 11:19:44,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:44,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:19:44,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221757606] [2020-09-25 11:19:44,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:19:44,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:44,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:19:44,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:19:44,439 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 9 states. [2020-09-25 11:19:48,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:48,170 INFO L93 Difference]: Finished difference Result 2046 states and 2862 transitions. [2020-09-25 11:19:48,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:19:48,175 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 151 [2020-09-25 11:19:48,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:48,184 INFO L225 Difference]: With dead ends: 2046 [2020-09-25 11:19:48,184 INFO L226 Difference]: Without dead ends: 1347 [2020-09-25 11:19:48,189 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:19:48,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-09-25 11:19:48,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1004. [2020-09-25 11:19:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1004 states. [2020-09-25 11:19:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1290 transitions. [2020-09-25 11:19:48,235 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1290 transitions. Word has length 151 [2020-09-25 11:19:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:48,236 INFO L479 AbstractCegarLoop]: Abstraction has 1004 states and 1290 transitions. [2020-09-25 11:19:48,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:19:48,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1290 transitions. [2020-09-25 11:19:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 11:19:48,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:48,247 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:48,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:48,247 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:48,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:48,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1824017853, now seen corresponding path program 1 times [2020-09-25 11:19:48,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:48,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458765680] [2020-09-25 11:19:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:48,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:48,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:48,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:52,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:52,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 11:19:52,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:52,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4212 [2020-09-25 11:19:52,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:52,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:52,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:52,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:52,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-09-25 11:19:52,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:52,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:52,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:52,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:52,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:52,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:52,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:19:52,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:52,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:52,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:52,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:52,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:52,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:52,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:52,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:52,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:52,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:52,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 11:19:52,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:52,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:52,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:52,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:52,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:52,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 7 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:52,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458765680] [2020-09-25 11:19:52,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:52,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:19:52,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946216410] [2020-09-25 11:19:52,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:52,955 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:52,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:52,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:52,956 INFO L87 Difference]: Start difference. First operand 1004 states and 1290 transitions. Second operand 8 states. [2020-09-25 11:19:56,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:56,532 INFO L93 Difference]: Finished difference Result 2934 states and 4056 transitions. [2020-09-25 11:19:56,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:19:56,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 157 [2020-09-25 11:19:56,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:56,564 INFO L225 Difference]: With dead ends: 2934 [2020-09-25 11:19:56,564 INFO L226 Difference]: Without dead ends: 1945 [2020-09-25 11:19:56,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:19:56,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2020-09-25 11:19:56,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1670. [2020-09-25 11:19:56,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1670 states. [2020-09-25 11:19:56,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2283 transitions. [2020-09-25 11:19:56,705 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2283 transitions. Word has length 157 [2020-09-25 11:19:56,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:56,707 INFO L479 AbstractCegarLoop]: Abstraction has 1670 states and 2283 transitions. [2020-09-25 11:19:56,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:56,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2283 transitions. [2020-09-25 11:19:56,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 11:19:56,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:56,724 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:19:56,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:19:56,724 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:56,725 INFO L82 PathProgramCache]: Analyzing trace with hash -835987883, now seen corresponding path program 1 times [2020-09-25 11:19:56,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:56,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157482828] [2020-09-25 11:19:56,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:56,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:56,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:57,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:00,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:00,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 11:20:00,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:20:00,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3554 [2020-09-25 11:20:00,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:00,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:00,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:20:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-25 11:20:00,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:00,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:00,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:00,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:00,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:00,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:00,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:20:00,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:00,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:00,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:00,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:20:00,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:00,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:00,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:00,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:00,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 11:20:00,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:00,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-25 11:20:00,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:00,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:00,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 11:20:00,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:00,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157482828] [2020-09-25 11:20:00,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:00,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:20:00,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502376308] [2020-09-25 11:20:00,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:20:00,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:00,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:20:00,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:00,680 INFO L87 Difference]: Start difference. First operand 1670 states and 2283 transitions. Second operand 7 states. [2020-09-25 11:20:02,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:02,985 INFO L93 Difference]: Finished difference Result 4355 states and 6291 transitions. [2020-09-25 11:20:02,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 11:20:02,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-09-25 11:20:02,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:03,002 INFO L225 Difference]: With dead ends: 4355 [2020-09-25 11:20:03,002 INFO L226 Difference]: Without dead ends: 2700 [2020-09-25 11:20:03,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:20:03,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2020-09-25 11:20:03,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 2462. [2020-09-25 11:20:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2462 states. [2020-09-25 11:20:03,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 3271 transitions. [2020-09-25 11:20:03,104 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 3271 transitions. Word has length 166 [2020-09-25 11:20:03,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:03,104 INFO L479 AbstractCegarLoop]: Abstraction has 2462 states and 3271 transitions. [2020-09-25 11:20:03,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:20:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 3271 transitions. [2020-09-25 11:20:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 11:20:03,108 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:03,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:20:03,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:20:03,109 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:03,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:03,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1089799840, now seen corresponding path program 1 times [2020-09-25 11:20:03,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:03,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875565867] [2020-09-25 11:20:03,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:03,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:03,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:08,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 11:20:08,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:20:08,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 11:20:08,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:08,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 11:20:08,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:08,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:08,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:08,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:08,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:20:08,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:08,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:08,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:08,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:08,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:08,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:08,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:08,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 11:20:08,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:08,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 11:20:08,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:08,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:08,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 11:20:08,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:08,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875565867] [2020-09-25 11:20:08,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:08,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:20:08,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512911621] [2020-09-25 11:20:08,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:20:08,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:08,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:20:08,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:08,724 INFO L87 Difference]: Start difference. First operand 2462 states and 3271 transitions. Second operand 7 states. [2020-09-25 11:20:10,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:10,860 INFO L93 Difference]: Finished difference Result 5089 states and 6780 transitions. [2020-09-25 11:20:10,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:20:10,862 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-09-25 11:20:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:10,876 INFO L225 Difference]: With dead ends: 5089 [2020-09-25 11:20:10,876 INFO L226 Difference]: Without dead ends: 2642 [2020-09-25 11:20:10,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:10,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2020-09-25 11:20:10,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2622. [2020-09-25 11:20:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2020-09-25 11:20:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3475 transitions. [2020-09-25 11:20:10,968 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3475 transitions. Word has length 195 [2020-09-25 11:20:10,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:10,969 INFO L479 AbstractCegarLoop]: Abstraction has 2622 states and 3475 transitions. [2020-09-25 11:20:10,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:20:10,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3475 transitions. [2020-09-25 11:20:10,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 11:20:10,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:10,975 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, 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 11:20:10,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:20:10,976 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:10,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:10,976 INFO L82 PathProgramCache]: Analyzing trace with hash 706836333, now seen corresponding path program 1 times [2020-09-25 11:20:10,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:10,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916390366] [2020-09-25 11:20:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:11,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:11,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:13,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:14,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:16,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-25 11:20:16,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:20:16,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 11:20:16,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:16,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:16,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:20:16,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:16,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:20:16,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:16,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:16,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:16,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:16,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:16,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:20:16,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:16,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:16,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:16,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:16,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:16,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:16,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:20:16,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:16,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 11:20:16,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:16,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:20:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:16,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:20:16,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:16,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:20:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:16,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:16,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:16,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:20:16,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:16,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 11:20:16,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:16,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:16,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:20:16,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:20:16,579 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 11:20:16,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916390366] [2020-09-25 11:20:16,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:20:16,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:20:16,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797522013] [2020-09-25 11:20:16,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:20:16,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:16,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:20:16,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:20:16,582 INFO L87 Difference]: Start difference. First operand 2622 states and 3475 transitions. Second operand 9 states.