/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 SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 03:08:45,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 03:08:45,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 03:08:45,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 03:08:45,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 03:08:45,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 03:08:45,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 03:08:45,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 03:08:45,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 03:08:45,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 03:08:45,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 03:08:45,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 03:08:45,519 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 03:08:45,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 03:08:45,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 03:08:45,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 03:08:45,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 03:08:45,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 03:08:45,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 03:08:45,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 03:08:45,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 03:08:45,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 03:08:45,550 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 03:08:45,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 03:08:45,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 03:08:45,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 03:08:45,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 03:08:45,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 03:08:45,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 03:08:45,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 03:08:45,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 03:08:45,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 03:08:45,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 03:08:45,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 03:08:45,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 03:08:45,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 03:08:45,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 03:08:45,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 03:08:45,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 03:08:45,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 03:08:45,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 03:08:45,591 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 [2020-10-14 03:08:45,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 03:08:45,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 03:08:45,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 03:08:45,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 03:08:45,642 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 03:08:45,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 03:08:45,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 03:08:45,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 03:08:45,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 03:08:45,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 03:08:45,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 03:08:45,646 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 03:08:45,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 03:08:45,646 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 03:08:45,647 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 03:08:45,647 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 03:08:45,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 03:08:45,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 03:08:45,648 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 03:08:45,648 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 03:08:45,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 03:08:45,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 03:08:45,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 03:08:45,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 03:08:45,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 03:08:45,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 03:08:45,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 03:08:45,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 03:08:45,650 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 03:08:45,650 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 -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 03:08:46,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 03:08:46,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 03:08:46,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 03:08:46,082 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 03:08:46,085 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 03:08:46,086 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label43.c [2020-10-14 03:08:46,166 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ad601c60/2b2c05d53fd44a40baba3f9316e6fce3/FLAGb2ec1108e [2020-10-14 03:08:47,090 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 03:08:47,091 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label43.c [2020-10-14 03:08:47,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ad601c60/2b2c05d53fd44a40baba3f9316e6fce3/FLAGb2ec1108e [2020-10-14 03:08:47,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4ad601c60/2b2c05d53fd44a40baba3f9316e6fce3 [2020-10-14 03:08:47,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 03:08:47,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 03:08:47,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 03:08:47,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 03:08:47,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 03:08:47,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:08:47" (1/1) ... [2020-10-14 03:08:47,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68352751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:47, skipping insertion in model container [2020-10-14 03:08:47,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 03:08:47" (1/1) ... [2020-10-14 03:08:47,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 03:08:47,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 03:08:49,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:08:49,743 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 03:08:50,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 03:08:50,863 INFO L208 MainTranslator]: Completed translation [2020-10-14 03:08:50,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:50 WrapperNode [2020-10-14 03:08:50,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 03:08:50,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 03:08:50,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 03:08:50,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 03:08:50,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:50" (1/1) ... [2020-10-14 03:08:50,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:50" (1/1) ... [2020-10-14 03:08:50,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:50" (1/1) ... [2020-10-14 03:08:50,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:50" (1/1) ... [2020-10-14 03:08:51,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:50" (1/1) ... [2020-10-14 03:08:51,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:50" (1/1) ... [2020-10-14 03:08:51,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:50" (1/1) ... [2020-10-14 03:08:51,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 03:08:51,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 03:08:51,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 03:08:51,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 03:08:51,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:50" (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 [2020-10-14 03:08:51,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 03:08:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 03:08:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 03:08:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 03:08:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 03:08:51,389 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 03:08:51,390 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 03:08:51,392 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 03:08:51,393 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 03:08:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 03:08:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 03:08:51,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 03:08:51,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 03:08:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 03:08:51,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 03:08:51,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 03:08:51,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 03:09:03,632 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 03:09:03,633 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 03:09:03,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:09:03 BoogieIcfgContainer [2020-10-14 03:09:03,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 03:09:03,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 03:09:03,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 03:09:03,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 03:09:03,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 03:08:47" (1/3) ... [2020-10-14 03:09:03,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641bfe30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:09:03, skipping insertion in model container [2020-10-14 03:09:03,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 03:08:50" (2/3) ... [2020-10-14 03:09:03,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@641bfe30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 03:09:03, skipping insertion in model container [2020-10-14 03:09:03,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 03:09:03" (3/3) ... [2020-10-14 03:09:03,665 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label43.c [2020-10-14 03:09:03,678 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 03:09:03,695 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 03:09:03,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 03:09:03,754 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 03:09:03,754 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 03:09:03,754 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 03:09:03,755 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 03:09:03,755 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 03:09:03,755 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 03:09:03,755 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 03:09:03,755 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 03:09:03,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 03:09:03,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 03:09:03,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:09:03,823 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] [2020-10-14 03:09:03,823 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:09:03,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:09:03,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1744350321, now seen corresponding path program 1 times [2020-10-14 03:09:03,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:09:03,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729777917] [2020-10-14 03:09:03,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:09:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:04,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:04,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:04,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 03:09:04,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:04,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 484 [2020-10-14 03:09:04,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:04,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 03:09:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 03:09:04,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 03:09:04,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 03:09:04,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:09:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:04,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:04,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:04,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:09:04,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:04,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 03:09:04,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:04,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:04,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:09:04,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:04,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 03:09:04,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:09:04,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729777917] [2020-10-14 03:09:04,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 03:09:04,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 03:09:04,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112353525] [2020-10-14 03:09:04,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 03:09:04,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:09:04,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 03:09:04,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 03:09:04,696 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 03:09:19,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:09:19,358 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-14 03:09:19,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:09:19,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-14 03:09:19,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:09:19,412 INFO L225 Difference]: With dead ends: 3152 [2020-10-14 03:09:19,412 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 03:09:19,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:09:19,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 03:09:19,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-14 03:09:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-14 03:09:19,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-14 03:09:19,621 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 24 [2020-10-14 03:09:19,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:09:19,622 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-14 03:09:19,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 03:09:19,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-14 03:09:19,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 03:09:19,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:09:19,627 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:09:19,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 03:09:19,628 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:09:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:09:19,629 INFO L82 PathProgramCache]: Analyzing trace with hash -591067482, now seen corresponding path program 1 times [2020-10-14 03:09:19,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:09:19,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659071760] [2020-10-14 03:09:19,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:09:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:19,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:20,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:20,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:20,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 03:09:20,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:09:20,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1246 [2020-10-14 03:09:20,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:20,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:09:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-14 03:09:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 03:09:20,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:09:21,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:09:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:21,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:21,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:21,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:09:21,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:21,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:09:21,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:21,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:21,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:09:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:21,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:09:21,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:21,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:09:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:21,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:21,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:21,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 03:09:21,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 03:09:21,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:21,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:09:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 03:09:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:09:21,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659071760] [2020-10-14 03:09:21,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:09:21,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:09:21,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142955450] [2020-10-14 03:09:21,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:09:21,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:09:21,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:09:21,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:09:21,226 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 5 states. [2020-10-14 03:09:40,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:09:40,525 INFO L93 Difference]: Finished difference Result 5465 states and 9067 transitions. [2020-10-14 03:09:40,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:09:40,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2020-10-14 03:09:40,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:09:40,553 INFO L225 Difference]: With dead ends: 5465 [2020-10-14 03:09:40,553 INFO L226 Difference]: Without dead ends: 3586 [2020-10-14 03:09:40,562 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 [2020-10-14 03:09:40,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2020-10-14 03:09:40,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3561. [2020-10-14 03:09:40,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3561 states. [2020-10-14 03:09:40,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5507 transitions. [2020-10-14 03:09:40,701 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5507 transitions. Word has length 94 [2020-10-14 03:09:40,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:09:40,703 INFO L479 AbstractCegarLoop]: Abstraction has 3561 states and 5507 transitions. [2020-10-14 03:09:40,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:09:40,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5507 transitions. [2020-10-14 03:09:40,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 03:09:40,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:09:40,713 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:09:40,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 03:09:40,714 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:09:40,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:09:40,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1056126799, now seen corresponding path program 1 times [2020-10-14 03:09:40,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:09:40,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761192203] [2020-10-14 03:09:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:09:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:40,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:41,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:41,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:41,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-14 03:09:41,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:09:41,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 795 [2020-10-14 03:09:41,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:41,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:09:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 03:09:41,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 03:09:41,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:41,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:09:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:41,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:41,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:41,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:09:41,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:41,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:09:41,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:41,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:09:41,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:41,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:09:41,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:41,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:09:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:41,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:41,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:41,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 03:09:41,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:41,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 03:09:41,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:41,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:09:41,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:41,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 03:09:41,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:09:41,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761192203] [2020-10-14 03:09:41,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:09:41,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:09:41,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115209003] [2020-10-14 03:09:41,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:09:41,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:09:41,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:09:41,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:09:41,846 INFO L87 Difference]: Start difference. First operand 3561 states and 5507 transitions. Second operand 5 states. [2020-10-14 03:09:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:09:56,674 INFO L93 Difference]: Finished difference Result 8775 states and 13865 transitions. [2020-10-14 03:09:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:09:56,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2020-10-14 03:09:56,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:09:56,713 INFO L225 Difference]: With dead ends: 8775 [2020-10-14 03:09:56,713 INFO L226 Difference]: Without dead ends: 5220 [2020-10-14 03:09:56,724 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 [2020-10-14 03:09:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5220 states. [2020-10-14 03:09:56,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5220 to 5201. [2020-10-14 03:09:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5201 states. [2020-10-14 03:09:56,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 7455 transitions. [2020-10-14 03:09:56,871 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 7455 transitions. Word has length 97 [2020-10-14 03:09:56,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:09:56,872 INFO L479 AbstractCegarLoop]: Abstraction has 5201 states and 7455 transitions. [2020-10-14 03:09:56,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:09:56,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 7455 transitions. [2020-10-14 03:09:56,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 03:09:56,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:09:56,880 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 03:09:56,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 03:09:56,881 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:09:56,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:09:56,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1074093104, now seen corresponding path program 1 times [2020-10-14 03:09:56,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:09:56,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047549507] [2020-10-14 03:09:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:09:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:56,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:57,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:57,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:57,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 03:09:57,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 03:09:57,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-14 03:09:57,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:57,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:09:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-14 03:09:57,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 03:09:57,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:09:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:58,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:58,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:58,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:09:58,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:09:58,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:58,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:09:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:09:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:09:58,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:09:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:09:58,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:09:58,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:09:58,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 03:09:58,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:09:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 03:09:58,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:09:58,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:09:58,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:09:58,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:09:58,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 03:09:58,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:09:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 03:09:58,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047549507] [2020-10-14 03:09:58,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:09:58,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:09:58,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448896641] [2020-10-14 03:09:58,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:09:58,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:09:58,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:09:58,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:09:58,306 INFO L87 Difference]: Start difference. First operand 5201 states and 7455 transitions. Second operand 5 states. [2020-10-14 03:10:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:10:18,080 INFO L93 Difference]: Finished difference Result 15404 states and 22355 transitions. [2020-10-14 03:10:18,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 03:10:18,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-14 03:10:18,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:10:18,141 INFO L225 Difference]: With dead ends: 15404 [2020-10-14 03:10:18,141 INFO L226 Difference]: Without dead ends: 10209 [2020-10-14 03:10:18,160 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 [2020-10-14 03:10:18,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10209 states. [2020-10-14 03:10:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10209 to 10180. [2020-10-14 03:10:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10180 states. [2020-10-14 03:10:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10180 states to 10180 states and 13794 transitions. [2020-10-14 03:10:18,465 INFO L78 Accepts]: Start accepts. Automaton has 10180 states and 13794 transitions. Word has length 114 [2020-10-14 03:10:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:10:18,467 INFO L479 AbstractCegarLoop]: Abstraction has 10180 states and 13794 transitions. [2020-10-14 03:10:18,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 03:10:18,468 INFO L276 IsEmpty]: Start isEmpty. Operand 10180 states and 13794 transitions. [2020-10-14 03:10:18,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-14 03:10:18,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:10:18,480 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:10:18,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 03:10:18,480 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:10:18,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:10:18,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1744242189, now seen corresponding path program 1 times [2020-10-14 03:10:18,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:10:18,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729920681] [2020-10-14 03:10:18,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:10:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:18,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:18,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:18,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:20,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:22,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:22,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-14 03:10:22,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 03:10:22,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4303 [2020-10-14 03:10:22,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:22,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:10:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 03:10:22,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:10:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:22,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:10:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:22,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:22,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:22,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:10:22,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:22,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:10:22,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:22,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:22,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:10:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:22,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:10:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 03:10:22,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:10:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:23,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:23,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:10:23,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:23,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 03:10:23,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:23,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 03:10:23,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:23,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 03:10:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:23,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:23,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:23,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:10:23,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:23,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 03:10:23,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:23,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:10:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:10:23,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:10:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:10:23,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729920681] [2020-10-14 03:10:23,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:10:23,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:10:23,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122109097] [2020-10-14 03:10:23,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:10:23,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:10:23,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:10:23,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:10:23,420 INFO L87 Difference]: Start difference. First operand 10180 states and 13794 transitions. Second operand 7 states. [2020-10-14 03:10:49,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:10:49,445 INFO L93 Difference]: Finished difference Result 21484 states and 30723 transitions. [2020-10-14 03:10:49,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 03:10:49,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-14 03:10:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:10:49,496 INFO L225 Difference]: With dead ends: 21484 [2020-10-14 03:10:49,496 INFO L226 Difference]: Without dead ends: 11310 [2020-10-14 03:10:49,524 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:10:49,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11310 states. [2020-10-14 03:10:49,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11310 to 11262. [2020-10-14 03:10:49,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11262 states. [2020-10-14 03:10:49,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11262 states to 11262 states and 15335 transitions. [2020-10-14 03:10:49,805 INFO L78 Accepts]: Start accepts. Automaton has 11262 states and 15335 transitions. Word has length 192 [2020-10-14 03:10:49,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:10:49,806 INFO L479 AbstractCegarLoop]: Abstraction has 11262 states and 15335 transitions. [2020-10-14 03:10:49,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:10:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand 11262 states and 15335 transitions. [2020-10-14 03:10:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-14 03:10:49,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:10:49,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 03:10:49,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 03:10:49,814 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:10:49,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:10:49,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2022040542, now seen corresponding path program 1 times [2020-10-14 03:10:49,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:10:49,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488070182] [2020-10-14 03:10:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:10:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:49,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:50,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:50,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:51,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:53,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:53,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 03:10:53,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 03:10:53,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3834 [2020-10-14 03:10:53,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:53,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:10:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 03:10:53,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 03:10:53,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:53,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:10:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:53,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:53,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:53,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:10:53,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 03:10:53,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:53,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:10:53,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:53,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:10:53,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:53,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:10:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:53,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:54,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:54,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 03:10:54,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 03:10:54,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:54,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:10:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:10:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 03:10:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:54,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 03:10:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:10:54,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:10:54,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:10:54,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:10:54,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:10:54,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 03:10:54,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:10:54,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:10:54,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:10:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:10:54,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 03:10:54,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:10:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 03:10:54,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488070182] [2020-10-14 03:10:54,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:10:54,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:10:54,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307596670] [2020-10-14 03:10:54,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:10:54,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:10:54,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:10:54,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:10:54,502 INFO L87 Difference]: Start difference. First operand 11262 states and 15335 transitions. Second operand 7 states. [2020-10-14 03:11:22,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:11:22,378 INFO L93 Difference]: Finished difference Result 28857 states and 41999 transitions. [2020-10-14 03:11:22,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:11:22,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-14 03:11:22,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:11:22,483 INFO L225 Difference]: With dead ends: 28857 [2020-10-14 03:11:22,483 INFO L226 Difference]: Without dead ends: 18404 [2020-10-14 03:11:22,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:11:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18404 states. [2020-10-14 03:11:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18404 to 16585. [2020-10-14 03:11:22,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16585 states. [2020-10-14 03:11:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16585 states to 16585 states and 22046 transitions. [2020-10-14 03:11:23,054 INFO L78 Accepts]: Start accepts. Automaton has 16585 states and 22046 transitions. Word has length 253 [2020-10-14 03:11:23,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:11:23,055 INFO L479 AbstractCegarLoop]: Abstraction has 16585 states and 22046 transitions. [2020-10-14 03:11:23,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:11:23,055 INFO L276 IsEmpty]: Start isEmpty. Operand 16585 states and 22046 transitions. [2020-10-14 03:11:23,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-14 03:11:23,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:11:23,068 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:11:23,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 03:11:23,068 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:11:23,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:11:23,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1520099051, now seen corresponding path program 1 times [2020-10-14 03:11:23,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:11:23,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984652057] [2020-10-14 03:11:23,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:11:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:23,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:23,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:28,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:28,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-14 03:11:28,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:11:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-14 03:11:28,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:28,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:28,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 03:11:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 03:11:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:28,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:11:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:28,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:28,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:28,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:11:28,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:28,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 03:11:28,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:28,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:28,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:28,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:28,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:28,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:28,417 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-10-14 03:11:28,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:11:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:28,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:28,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:28,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 03:11:28,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:28,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 03:11:28,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:28,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:11:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:28,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:11:28,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:28,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 03:11:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:28,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:28,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 03:11:28,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:28,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 03:11:28,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:28,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:28,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:11:28,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:11:28,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 03:11:28,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 03:11:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:11:28,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:11:28,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:11:28,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 03:11:28,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:11:28,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-14 03:11:28,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:11:28,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:11:28,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:11:28,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:11:28,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 03:11:28,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:11:28,988 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-14 03:11:28,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984652057] [2020-10-14 03:11:28,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:11:28,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:11:28,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110030045] [2020-10-14 03:11:28,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:11:28,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:11:28,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:11:28,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:11:28,994 INFO L87 Difference]: Start difference. First operand 16585 states and 22046 transitions. Second operand 7 states. [2020-10-14 03:12:08,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:12:08,836 INFO L93 Difference]: Finished difference Result 38137 states and 53943 transitions. [2020-10-14 03:12:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:12:08,839 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 269 [2020-10-14 03:12:08,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:12:08,934 INFO L225 Difference]: With dead ends: 38137 [2020-10-14 03:12:08,934 INFO L226 Difference]: Without dead ends: 22361 [2020-10-14 03:12:08,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 03:12:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22361 states. [2020-10-14 03:12:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22361 to 22171. [2020-10-14 03:12:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22171 states. [2020-10-14 03:12:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22171 states to 22171 states and 29336 transitions. [2020-10-14 03:12:09,490 INFO L78 Accepts]: Start accepts. Automaton has 22171 states and 29336 transitions. Word has length 269 [2020-10-14 03:12:09,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:12:09,490 INFO L479 AbstractCegarLoop]: Abstraction has 22171 states and 29336 transitions. [2020-10-14 03:12:09,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:12:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 22171 states and 29336 transitions. [2020-10-14 03:12:09,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-14 03:12:09,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:12:09,500 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 03:12:09,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:12:09,500 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:12:09,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:12:09,501 INFO L82 PathProgramCache]: Analyzing trace with hash -682198410, now seen corresponding path program 1 times [2020-10-14 03:12:09,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:12:09,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003500815] [2020-10-14 03:12:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:12:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:09,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:09,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:10,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:12,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:14,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:14,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-14 03:12:14,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 03:12:14,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 03:12:14,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:14,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:14,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:12:14,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-14 03:12:14,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 03:12:14,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 03:12:14,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:12:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:14,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:14,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:14,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:12:14,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:14,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 03:12:14,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:14,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:12:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:14,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:12:14,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:14,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:12:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:14,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:15,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:15,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 03:12:15,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-14 03:12:15,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:15,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:12:15,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:12:15,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-14 03:12:15,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:15,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 03:12:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:15,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:15,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:15,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 03:12:15,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:15,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 03:12:15,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:15,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:15,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:12:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 03:12:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 03:12:15,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-14 03:12:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:12:15,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:12:15,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:12:15,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 03:12:15,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:12:15,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 03:12:15,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:12:15,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:12:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:12:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-14 03:12:15,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:12:15,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:12:15,558 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 141 proven. 73 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-14 03:12:15,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003500815] [2020-10-14 03:12:15,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:12:15,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 03:12:15,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953396915] [2020-10-14 03:12:15,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 03:12:15,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:12:15,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 03:12:15,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 03:12:15,562 INFO L87 Difference]: Start difference. First operand 22171 states and 29336 transitions. Second operand 7 states.