/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:09:59,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:09:59,573 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:09:59,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:09:59,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:09:59,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:09:59,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:09:59,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:09:59,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:09:59,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:09:59,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:09:59,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:09:59,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:09:59,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:09:59,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:09:59,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:09:59,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:09:59,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:09:59,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:09:59,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:09:59,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:09:59,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:09:59,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:09:59,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:09:59,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:09:59,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:09:59,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:09:59,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:09:59,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:09:59,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:09:59,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:09:59,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:09:59,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:09:59,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:09:59,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:09:59,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:09:59,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:09:59,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:09:59,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:09:59,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:09:59,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:09:59,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:09:59,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:09:59,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:09:59,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:09:59,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:09:59,701 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:09:59,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:09:59,701 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:09:59,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:09:59,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:09:59,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:09:59,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:09:59,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:09:59,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:09:59,703 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:09:59,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:09:59,703 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:09:59,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:09:59,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:09:59,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:09:59,704 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:09:59,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:09:59,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:09:59,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:09:59,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:09:59,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:09:59,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:09:59,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:09:59,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:09:59,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:09:59,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:10:00,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:10:00,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:10:00,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:10:00,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:10:00,212 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:10:00,213 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 10:10:00,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4db686cb2/fff4391cc6b148818bef7ae8cccd671f/FLAG9ca64b2fc [2020-09-25 10:10:00,986 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:10:00,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label44.c [2020-09-25 10:10:01,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4db686cb2/fff4391cc6b148818bef7ae8cccd671f/FLAG9ca64b2fc [2020-09-25 10:10:01,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4db686cb2/fff4391cc6b148818bef7ae8cccd671f [2020-09-25 10:10:01,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:10:01,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:10:01,260 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:01,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:10:01,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:10:01,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:01" (1/1) ... [2020-09-25 10:10:01,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442b9b22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:01, skipping insertion in model container [2020-09-25 10:10:01,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:10:01" (1/1) ... [2020-09-25 10:10:01,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:10:01,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:10:01,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:01,922 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:10:02,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:10:02,050 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:10:02,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:02 WrapperNode [2020-09-25 10:10:02,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:10:02,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:10:02,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:10:02,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:10:02,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:02" (1/1) ... [2020-09-25 10:10:02,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:02" (1/1) ... [2020-09-25 10:10:02,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:02" (1/1) ... [2020-09-25 10:10:02,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:02" (1/1) ... [2020-09-25 10:10:02,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:02" (1/1) ... [2020-09-25 10:10:02,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:02" (1/1) ... [2020-09-25 10:10:02,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:02" (1/1) ... [2020-09-25 10:10:02,165 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:10:02,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:10:02,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:10:02,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:10:02,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:10:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:10:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:10:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:10:02,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:10:02,259 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:10:02,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:10:02,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:10:02,260 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:10:02,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:10:02,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:10:02,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:10:03,678 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:10:03,679 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:10:03,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:03 BoogieIcfgContainer [2020-09-25 10:10:03,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:10:03,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:10:03,691 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:10:03,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:10:03,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:10:01" (1/3) ... [2020-09-25 10:10:03,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b751b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:03, skipping insertion in model container [2020-09-25 10:10:03,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:10:02" (2/3) ... [2020-09-25 10:10:03,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b751b1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:10:03, skipping insertion in model container [2020-09-25 10:10:03,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:10:03" (3/3) ... [2020-09-25 10:10:03,700 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label44.c [2020-09-25 10:10:03,712 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:10:03,724 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:10:03,750 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:10:03,787 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:10:03,788 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:10:03,788 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:10:03,788 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:10:03,788 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:10:03,788 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:10:03,788 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:10:03,789 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:10:03,824 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 10:10:03,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 10:10:03,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:03,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:03,852 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:03,859 INFO L82 PathProgramCache]: Analyzing trace with hash -118135375, now seen corresponding path program 1 times [2020-09-25 10:10:03,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:03,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527319384] [2020-09-25 10:10:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:04,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:04,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:05,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:06,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:07,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:09,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 10:10:09,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:10:09,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:10:09,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:09,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:09,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:10:09,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:10:09,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 10:10:09,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:10:09,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:09,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:09,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:09,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:09,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:09,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:10:09,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:09,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:09,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:10:09,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:10:09,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527319384] [2020-09-25 10:10:09,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:10:09,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:10:09,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523789117] [2020-09-25 10:10:09,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:10:09,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:09,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:10:09,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:10:09,509 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 10:10:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:11,960 INFO L93 Difference]: Finished difference Result 1247 states and 1695 transitions. [2020-09-25 10:10:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:10:11,962 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-09-25 10:10:11,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:11,987 INFO L225 Difference]: With dead ends: 1247 [2020-09-25 10:10:11,987 INFO L226 Difference]: Without dead ends: 669 [2020-09-25 10:10:11,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:10:12,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-09-25 10:10:12,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 621. [2020-09-25 10:10:12,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 10:10:12,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 10:10:12,101 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 114 [2020-09-25 10:10:12,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:12,102 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 10:10:12,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:10:12,102 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 10:10:12,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 10:10:12,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:12,112 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:12,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:10:12,113 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:12,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:12,114 INFO L82 PathProgramCache]: Analyzing trace with hash 144430378, now seen corresponding path program 1 times [2020-09-25 10:10:12,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:12,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4070991] [2020-09-25 10:10:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:12,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:12,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:13,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:13,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:14,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:15,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:17,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 10:10:17,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:10:17,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:10:17,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:17,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:10:17,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:10:17,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 10:10:17,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:17,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:17,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:17,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:10:17,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:17,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:10:17,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:17,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:17,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:17,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:17,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:17,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:10:17,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:17,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:10:17,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:10:17,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4070991] [2020-09-25 10:10:17,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:17,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:10:17,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334144981] [2020-09-25 10:10:17,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:10:17,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:17,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:10:17,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:10:17,493 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 6 states. [2020-09-25 10:10:19,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:19,729 INFO L93 Difference]: Finished difference Result 1700 states and 2021 transitions. [2020-09-25 10:10:19,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:10:19,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-09-25 10:10:19,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:19,739 INFO L225 Difference]: With dead ends: 1700 [2020-09-25 10:10:19,739 INFO L226 Difference]: Without dead ends: 1101 [2020-09-25 10:10:19,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:10:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-25 10:10:19,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 1047. [2020-09-25 10:10:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-09-25 10:10:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1234 transitions. [2020-09-25 10:10:19,792 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1234 transitions. Word has length 131 [2020-09-25 10:10:19,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:19,793 INFO L479 AbstractCegarLoop]: Abstraction has 1047 states and 1234 transitions. [2020-09-25 10:10:19,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:10:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1234 transitions. [2020-09-25 10:10:19,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 10:10:19,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:19,802 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:19,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:10:19,803 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:19,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:19,803 INFO L82 PathProgramCache]: Analyzing trace with hash -294296002, now seen corresponding path program 1 times [2020-09-25 10:10:19,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:19,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804278549] [2020-09-25 10:10:19,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:19,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:20,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:21,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:21,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:23,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:23,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:24,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:24,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 10:10:24,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:10:24,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:10:24,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:24,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 10:10:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:10:24,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 10:10:24,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:25,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:25,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:25,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:25,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:25,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 10:10:25,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:25,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:25,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:25,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:10:25,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:25,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:25,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:25,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:25,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:25,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:10:25,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:25,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:25,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:10:25,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:25,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:10:25,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:25,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:10:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:25,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:25,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:25,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 10:10:25,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:25,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 10:10:25,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:25,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:25,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:25,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:10:25,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:10:25,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 10:10:25,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804278549] [2020-09-25 10:10:25,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:25,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:10:25,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712499590] [2020-09-25 10:10:25,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:10:25,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:25,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:10:25,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:10:25,432 INFO L87 Difference]: Start difference. First operand 1047 states and 1234 transitions. Second operand 12 states. [2020-09-25 10:10:26,350 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-09-25 10:10:26,791 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-09-25 10:10:28,549 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-25 10:10:31,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:31,253 INFO L93 Difference]: Finished difference Result 4349 states and 5724 transitions. [2020-09-25 10:10:31,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 10:10:31,261 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2020-09-25 10:10:31,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:31,284 INFO L225 Difference]: With dead ends: 4349 [2020-09-25 10:10:31,284 INFO L226 Difference]: Without dead ends: 3169 [2020-09-25 10:10:31,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-09-25 10:10:31,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3169 states. [2020-09-25 10:10:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3169 to 2830. [2020-09-25 10:10:31,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2830 states. [2020-09-25 10:10:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 3417 transitions. [2020-09-25 10:10:31,402 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 3417 transitions. Word has length 149 [2020-09-25 10:10:31,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:31,402 INFO L479 AbstractCegarLoop]: Abstraction has 2830 states and 3417 transitions. [2020-09-25 10:10:31,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:10:31,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 3417 transitions. [2020-09-25 10:10:31,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 10:10:31,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:31,412 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:31,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:10:31,413 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:31,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:31,413 INFO L82 PathProgramCache]: Analyzing trace with hash -683879195, now seen corresponding path program 1 times [2020-09-25 10:10:31,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:31,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378737926] [2020-09-25 10:10:31,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:31,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:32,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:33,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:36,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 10:10:36,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:10:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:10:36,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:36,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:10:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:10:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-09-25 10:10:36,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:10:36,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:36,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:36,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:36,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:36,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 10:10:36,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:36,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:36,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:10:36,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:36,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:36,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:36,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:36,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:36,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:36,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:10:36,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:36,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:36,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:10:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:10:36,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:36,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:10:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:36,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:36,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:36,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 10:10:36,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:10:36,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 10:10:36,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:36,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:10:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:36,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:10:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 10:10:37,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378737926] [2020-09-25 10:10:37,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:37,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:10:37,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543753856] [2020-09-25 10:10:37,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:10:37,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:37,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:10:37,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:10:37,368 INFO L87 Difference]: Start difference. First operand 2830 states and 3417 transitions. Second operand 11 states. [2020-09-25 10:10:40,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:10:40,977 INFO L93 Difference]: Finished difference Result 6651 states and 8403 transitions. [2020-09-25 10:10:40,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:10:40,977 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 165 [2020-09-25 10:10:40,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:10:40,991 INFO L225 Difference]: With dead ends: 6651 [2020-09-25 10:10:40,991 INFO L226 Difference]: Without dead ends: 2457 [2020-09-25 10:10:41,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:10:41,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2020-09-25 10:10:41,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2297. [2020-09-25 10:10:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2297 states. [2020-09-25 10:10:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2297 states to 2297 states and 2660 transitions. [2020-09-25 10:10:41,101 INFO L78 Accepts]: Start accepts. Automaton has 2297 states and 2660 transitions. Word has length 165 [2020-09-25 10:10:41,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:10:41,102 INFO L479 AbstractCegarLoop]: Abstraction has 2297 states and 2660 transitions. [2020-09-25 10:10:41,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:10:41,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2297 states and 2660 transitions. [2020-09-25 10:10:41,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 10:10:41,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:10:41,112 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:10:41,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:10:41,113 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:10:41,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:10:41,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1633180622, now seen corresponding path program 1 times [2020-09-25 10:10:41,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:10:41,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006243645] [2020-09-25 10:10:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:10:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:41,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:41,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:41,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:46,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:46,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 10:10:46,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:10:46,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 10:10:46,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:46,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 10:10:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 10:10:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:10:46,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:46,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:10:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:46,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:46,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:46,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:10:46,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:46,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 10:10:46,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:46,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:46,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:47,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:10:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:47,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:47,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:47,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:47,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:47,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:10:47,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:47,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:47,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:47,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:47,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:47,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 10:10:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:47,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:47,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:10:47,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:47,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:10:47,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:47,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:10:47,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:47,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:10:47,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:47,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 10:10:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:10:47,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:10:47,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:10:47,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:10:47,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:10:47,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:10:47,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:10:47,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:10:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:10:47,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:10:47,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:10:47,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:10:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 58 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 10:10:47,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006243645] [2020-09-25 10:10:47,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:10:47,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 10:10:47,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971540343] [2020-09-25 10:10:47,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 10:10:47,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:10:47,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 10:10:47,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:10:47,424 INFO L87 Difference]: Start difference. First operand 2297 states and 2660 transitions. Second operand 13 states. [2020-09-25 10:10:48,041 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-09-25 10:10:48,747 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77