/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=0.3 --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/Problem01_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:21:17,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:21:17,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:21:17,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:21:17,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:21:17,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:21:17,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:21:17,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:21:17,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:21:17,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:21:17,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:21:18,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:21:18,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:21:18,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:21:18,005 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:21:18,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:21:18,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:21:18,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:21:18,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:21:18,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:21:18,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:21:18,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:21:18,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:21:18,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:21:18,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:21:18,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:21:18,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:21:18,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:21:18,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:21:18,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:21:18,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:21:18,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:21:18,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:21:18,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:21:18,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:21:18,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:21:18,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:21:18,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:21:18,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:21:18,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:21:18,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:21:18,059 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 12:21:18,100 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:21:18,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:21:18,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:21:18,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:21:18,103 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:21:18,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:21:18,104 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:21:18,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:21:18,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:21:18,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:21:18,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:21:18,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:21:18,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:21:18,107 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:21:18,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:21:18,107 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:21:18,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:21:18,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:21:18,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:21:18,108 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:21:18,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:21:18,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:21:18,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:21:18,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:21:18,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:21:18,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:21:18,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:21:18,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:21:18,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:21:18,110 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:21:18,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:21:18,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:21:18,569 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:21:18,571 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:21:18,571 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:21:18,573 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 12:21:18,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0987c8cb9/c0b13397fad34f588dac1ccca828eaf1/FLAGd22f7fb04 [2020-09-25 12:21:19,319 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:21:19,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label13.c [2020-09-25 12:21:19,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0987c8cb9/c0b13397fad34f588dac1ccca828eaf1/FLAGd22f7fb04 [2020-09-25 12:21:19,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0987c8cb9/c0b13397fad34f588dac1ccca828eaf1 [2020-09-25 12:21:19,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:21:19,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:21:19,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:19,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:21:19,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:21:19,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:19" (1/1) ... [2020-09-25 12:21:19,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c096cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:19, skipping insertion in model container [2020-09-25 12:21:19,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:21:19" (1/1) ... [2020-09-25 12:21:19,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:21:19,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:21:20,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:20,150 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:21:20,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:21:20,468 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:21:20,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:20 WrapperNode [2020-09-25 12:21:20,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:21:20,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:21:20,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:21:20,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:21:20,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:20" (1/1) ... [2020-09-25 12:21:20,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:20" (1/1) ... [2020-09-25 12:21:20,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:20" (1/1) ... [2020-09-25 12:21:20,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:20" (1/1) ... [2020-09-25 12:21:20,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:20" (1/1) ... [2020-09-25 12:21:20,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:20" (1/1) ... [2020-09-25 12:21:20,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:20" (1/1) ... [2020-09-25 12:21:20,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:21:20,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:21:20,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:21:20,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:21:20,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:20" (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 12:21:20,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:21:20,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:21:20,718 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:21:20,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:21:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:21:20,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:21:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:21:20,720 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:21:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:21:20,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:21:20,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:21:22,055 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:21:22,055 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:21:22,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:22 BoogieIcfgContainer [2020-09-25 12:21:22,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:21:22,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:21:22,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:21:22,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:21:22,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:21:19" (1/3) ... [2020-09-25 12:21:22,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df3b049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:22, skipping insertion in model container [2020-09-25 12:21:22,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:21:20" (2/3) ... [2020-09-25 12:21:22,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df3b049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:21:22, skipping insertion in model container [2020-09-25 12:21:22,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:21:22" (3/3) ... [2020-09-25 12:21:22,074 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label13.c [2020-09-25 12:21:22,085 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:21:22,096 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:21:22,118 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:21:22,153 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:21:22,153 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:21:22,153 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:21:22,153 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:21:22,153 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:21:22,153 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:21:22,154 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:21:22,154 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:21:22,194 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:21:22,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 12:21:22,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:22,216 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:22,216 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:22,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:22,224 INFO L82 PathProgramCache]: Analyzing trace with hash -946278635, now seen corresponding path program 1 times [2020-09-25 12:21:22,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:22,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650406427] [2020-09-25 12:21:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:22,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:22,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:24,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:27,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 12:21:27,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:21:27,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:21:27,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:27,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:21:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 12:21:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:21:27,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:27,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:27,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:27,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:27,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:21:27,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:27,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:27,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:21:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:27,820 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 12:21:27,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650406427] [2020-09-25 12:21:27,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:21:27,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:21:27,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259704155] [2020-09-25 12:21:27,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:21:27,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:27,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:21:27,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:21:27,852 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:21:29,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:29,956 INFO L93 Difference]: Finished difference Result 1231 states and 1630 transitions. [2020-09-25 12:21:29,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:21:29,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2020-09-25 12:21:29,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:29,985 INFO L225 Difference]: With dead ends: 1231 [2020-09-25 12:21:29,985 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 12:21:29,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 12:21:30,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 12:21:30,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 603. [2020-09-25 12:21:30,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:21:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 707 transitions. [2020-09-25 12:21:30,125 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 707 transitions. Word has length 151 [2020-09-25 12:21:30,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:30,128 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 707 transitions. [2020-09-25 12:21:30,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:21:30,128 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 707 transitions. [2020-09-25 12:21:30,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 12:21:30,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:30,141 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:30,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:21:30,142 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:30,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:30,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1471921254, now seen corresponding path program 1 times [2020-09-25 12:21:30,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:30,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585685572] [2020-09-25 12:21:30,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:30,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:30,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:30,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:30,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:34,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:35,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:35,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:35,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 12:21:35,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:21:35,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:21:35,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:35,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:21:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 12:21:35,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 12:21:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:21:35,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:35,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:35,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:35,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:35,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:21:35,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:35,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:35,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:35,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:35,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:35,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:35,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:35,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:35,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:35,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:35,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:35,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:21:35,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:35,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:21:35,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:35,494 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:35,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585685572] [2020-09-25 12:21:35,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:35,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:21:35,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479593783] [2020-09-25 12:21:35,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:21:35,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:35,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:21:35,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:21:35,500 INFO L87 Difference]: Start difference. First operand 603 states and 707 transitions. Second operand 5 states. [2020-09-25 12:21:37,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:37,691 INFO L93 Difference]: Finished difference Result 1407 states and 1693 transitions. [2020-09-25 12:21:37,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:21:37,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-09-25 12:21:37,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:37,698 INFO L225 Difference]: With dead ends: 1407 [2020-09-25 12:21:37,698 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 12:21:37,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:21:37,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 12:21:37,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 748. [2020-09-25 12:21:37,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 12:21:37,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 893 transitions. [2020-09-25 12:21:37,745 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 893 transitions. Word has length 172 [2020-09-25 12:21:37,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:37,746 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 893 transitions. [2020-09-25 12:21:37,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:21:37,746 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 893 transitions. [2020-09-25 12:21:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-25 12:21:37,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:37,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:37,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:21:37,751 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:37,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:37,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1946055609, now seen corresponding path program 1 times [2020-09-25 12:21:37,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:37,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997794627] [2020-09-25 12:21:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:37,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:38,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:39,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:42,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:42,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-25 12:21:42,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:21:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 12:21:42,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:42,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:21:42,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:21:42,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 12:21:42,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:43,407 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 35 [2020-09-25 12:21:43,615 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-09-25 12:21:43,797 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-09-25 12:21:43,986 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-09-25 12:21:44,168 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2020-09-25 12:21:44,353 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32 [2020-09-25 12:21:44,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:44,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:44,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:44,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:44,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:44,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:21:44,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:44,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:44,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:44,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:44,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:21:44,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:44,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:21:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:44,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:44,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:44,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:44,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:21:44,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:44,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 12:21:44,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:44,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:44,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:21:44,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:44,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:21:44,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1997794627] [2020-09-25 12:21:44,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:44,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 12:21:44,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256873095] [2020-09-25 12:21:44,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 12:21:44,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:44,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 12:21:44,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-25 12:21:44,996 INFO L87 Difference]: Start difference. First operand 748 states and 893 transitions. Second operand 20 states. [2020-09-25 12:21:46,372 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-09-25 12:21:46,880 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-09-25 12:21:47,315 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2020-09-25 12:21:47,495 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-09-25 12:21:48,310 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 12:21:48,618 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 12:21:49,091 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-09-25 12:21:49,279 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-09-25 12:21:50,335 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 12:21:50,878 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-09-25 12:21:51,416 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-09-25 12:21:51,725 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-09-25 12:21:52,460 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 12:21:53,110 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 12:21:53,637 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 12:21:54,066 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-25 12:21:54,691 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-09-25 12:21:55,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:55,540 INFO L93 Difference]: Finished difference Result 2397 states and 3093 transitions. [2020-09-25 12:21:55,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 12:21:55,540 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 173 [2020-09-25 12:21:55,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:55,555 INFO L225 Difference]: With dead ends: 2397 [2020-09-25 12:21:55,555 INFO L226 Difference]: Without dead ends: 1673 [2020-09-25 12:21:55,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=872, Invalid=2208, Unknown=0, NotChecked=0, Total=3080 [2020-09-25 12:21:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2020-09-25 12:21:55,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1566. [2020-09-25 12:21:55,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-09-25 12:21:55,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 1856 transitions. [2020-09-25 12:21:55,633 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 1856 transitions. Word has length 173 [2020-09-25 12:21:55,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:55,634 INFO L479 AbstractCegarLoop]: Abstraction has 1566 states and 1856 transitions. [2020-09-25 12:21:55,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 12:21:55,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 1856 transitions. [2020-09-25 12:21:55,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 12:21:55,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:55,641 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:55,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:21:55,643 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:55,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:55,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1879391658, now seen corresponding path program 1 times [2020-09-25 12:21:55,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:55,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882440206] [2020-09-25 12:21:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:55,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:55,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:56,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:56,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:57,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:57,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:58,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:00,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:00,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 12:22:00,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:22:00,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 12:22:00,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:00,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:00,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:00,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 12:22:00,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 12:22:00,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:00,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:00,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:00,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:00,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:00,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:00,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:22:00,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:00,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:00,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:00,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:00,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:00,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:00,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:00,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:22:00,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:00,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:22:00,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:00,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:00,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:00,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:00,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:22:00,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:00,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882440206] [2020-09-25 12:22:00,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:00,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:00,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542283678] [2020-09-25 12:22:00,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:00,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:00,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:00,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:00,980 INFO L87 Difference]: Start difference. First operand 1566 states and 1856 transitions. Second operand 5 states. [2020-09-25 12:22:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:02,753 INFO L93 Difference]: Finished difference Result 3851 states and 4707 transitions. [2020-09-25 12:22:02,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:02,756 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 12:22:02,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:02,768 INFO L225 Difference]: With dead ends: 3851 [2020-09-25 12:22:02,768 INFO L226 Difference]: Without dead ends: 2309 [2020-09-25 12:22:02,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:22:02,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2020-09-25 12:22:02,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2281. [2020-09-25 12:22:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2281 states. [2020-09-25 12:22:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 2752 transitions. [2020-09-25 12:22:02,840 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 2752 transitions. Word has length 180 [2020-09-25 12:22:02,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:02,840 INFO L479 AbstractCegarLoop]: Abstraction has 2281 states and 2752 transitions. [2020-09-25 12:22:02,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:02,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 2752 transitions. [2020-09-25 12:22:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 12:22:02,850 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:02,851 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:02,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:22:02,851 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:02,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:02,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1152688918, now seen corresponding path program 1 times [2020-09-25 12:22:02,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:02,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793251111] [2020-09-25 12:22:02,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:02,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:03,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:06,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:07,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:07,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 12:22:07,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:22:07,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:22:07,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:07,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:07,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:22:07,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 12:22:07,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:22:07,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:22:08,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:08,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:08,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:08,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:08,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:08,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:22:08,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:08,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:22:08,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1