/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:18:33,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:18:33,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:18:33,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:18:33,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:18:33,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:18:33,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:18:33,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:18:33,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:18:33,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:18:33,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:18:33,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:18:33,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:18:33,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:18:33,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:18:33,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:18:33,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:18:33,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:18:33,508 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:18:33,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:18:33,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:18:33,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:18:33,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:18:33,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:18:33,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:18:33,526 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:18:33,526 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:18:33,528 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:18:33,528 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:18:33,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:18:33,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:18:33,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:18:33,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:18:33,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:18:33,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:18:33,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:18:33,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:18:33,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:18:33,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:18:33,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:18:33,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:18:33,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:18:33,585 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:18:33,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:18:33,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:18:33,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:18:33,588 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:18:33,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:18:33,589 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:18:33,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:18:33,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:18:33,590 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:18:33,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:18:33,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:18:33,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:18:33,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:18:33,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:18:33,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:18:33,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:18:33,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:18:33,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:18:33,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:18:33,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:18:33,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:33,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:18:33,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:18:33,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:18:33,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:18:33,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:18:33,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:18:33,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:18:33,595 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:18:34,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:18:34,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:18:34,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:18:34,058 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:18:34,059 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:18:34,060 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 11:18:34,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf0bc8d95/6d72b63ad4ae4125a674545801e09d7d/FLAGcc7ddf090 [2020-09-25 11:18:34,827 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:18:34,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label11.c [2020-09-25 11:18:34,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf0bc8d95/6d72b63ad4ae4125a674545801e09d7d/FLAGcc7ddf090 [2020-09-25 11:18:35,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cf0bc8d95/6d72b63ad4ae4125a674545801e09d7d [2020-09-25 11:18:35,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:18:35,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:18:35,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:35,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:18:35,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:18:35,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:35,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601fc90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35, skipping insertion in model container [2020-09-25 11:18:35,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:35,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:18:35,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:18:35,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:35,627 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:18:35,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:18:35,921 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:18:35,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35 WrapperNode [2020-09-25 11:18:35,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:18:35,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:18:35,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:18:35,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:18:35,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:35,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:35,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:35,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:36,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:36,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:36,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... [2020-09-25 11:18:36,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:18:36,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:18:36,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:18:36,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:18:36,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:18:36,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:18:36,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:18:36,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:18:36,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:18:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:18:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:18:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:18:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:18:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:18:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:18:36,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:18:37,783 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:18:37,784 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:18:37,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:37 BoogieIcfgContainer [2020-09-25 11:18:37,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:18:37,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:18:37,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:18:37,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:18:37,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:18:35" (1/3) ... [2020-09-25 11:18:37,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9990a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:37, skipping insertion in model container [2020-09-25 11:18:37,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:18:35" (2/3) ... [2020-09-25 11:18:37,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9990a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:18:37, skipping insertion in model container [2020-09-25 11:18:37,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:18:37" (3/3) ... [2020-09-25 11:18:37,816 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label11.c [2020-09-25 11:18:37,830 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:18:37,847 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:18:37,873 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:18:37,911 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:18:37,912 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:18:37,912 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:18:37,912 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:18:37,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:18:37,913 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:18:37,913 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:18:37,913 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:18:37,957 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:18:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 11:18:37,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:37,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:37,979 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:37,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:37,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1178337343, now seen corresponding path program 1 times [2020-09-25 11:18:38,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:38,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276926026] [2020-09-25 11:18:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:38,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:38,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:39,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 11:18:39,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:18:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1496 [2020-09-25 11:18:39,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:39,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 11:18:39,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:18:39,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:39,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:39,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:39,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:39,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:39,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:18:39,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:39,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:39,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:39,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276926026] [2020-09-25 11:18:39,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:39,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:18:39,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740493494] [2020-09-25 11:18:40,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:18:40,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:40,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:18:40,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:18:40,026 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:18:42,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:42,130 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 11:18:42,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:18:42,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-09-25 11:18:42,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:42,173 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 11:18:42,173 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 11:18:42,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:42,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 11:18:42,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 11:18:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 11:18:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 11:18:42,294 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 80 [2020-09-25 11:18:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:42,295 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 11:18:42,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:18:42,296 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 11:18:42,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 11:18:42,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:42,308 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:42,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:18:42,309 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:42,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:42,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1494862159, now seen corresponding path program 1 times [2020-09-25 11:18:42,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:42,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104530614] [2020-09-25 11:18:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:42,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:42,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:42,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:43,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:46,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 11:18:46,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:18:46,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4082 [2020-09-25 11:18:46,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:46,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:18:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:18:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 11:18:46,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:46,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:46,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:46,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:46,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:46,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:18:46,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:46,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:46,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:46,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:46,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:18:46,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:18:46,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:46,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:46,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:46,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:18:46,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:18:46,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 11:18:46,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:46,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:18:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 56 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:18:46,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104530614] [2020-09-25 11:18:46,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:46,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:18:46,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982682955] [2020-09-25 11:18:46,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:18:46,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:46,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:18:46,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:18:46,886 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 11:18:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:48,564 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 11:18:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:18:48,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-09-25 11:18:48,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:48,571 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 11:18:48,571 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 11:18:48,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:18:48,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 11:18:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 11:18:48,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 11:18:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 11:18:48,606 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 159 [2020-09-25 11:18:48,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:48,607 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 11:18:48,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:18:48,607 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 11:18:48,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-25 11:18:48,613 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:48,613 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:48,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:18:48,614 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:48,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:48,614 INFO L82 PathProgramCache]: Analyzing trace with hash -663007827, now seen corresponding path program 1 times [2020-09-25 11:18:48,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:48,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1187265366] [2020-09-25 11:18:48,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:48,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:48,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:52,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:53,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:53,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-25 11:18:53,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:18:53,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:18:53,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:53,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:18:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:18:53,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-09-25 11:18:53,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:53,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:53,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:53,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:53,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:53,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:53,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:18:53,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:53,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:53,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:53,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:18:53,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:53,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:53,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:53,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:18:53,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:53,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 11:18:53,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:53,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:18:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:53,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:18:53,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:54,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1187265366] [2020-09-25 11:18:54,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:18:54,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:18:54,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557467956] [2020-09-25 11:18:54,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:18:54,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:54,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:18:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:18:54,087 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 11:18:57,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:18:57,609 INFO L93 Difference]: Finished difference Result 1984 states and 2586 transitions. [2020-09-25 11:18:57,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:18:57,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 169 [2020-09-25 11:18:57,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:18:57,625 INFO L225 Difference]: With dead ends: 1984 [2020-09-25 11:18:57,625 INFO L226 Difference]: Without dead ends: 1454 [2020-09-25 11:18:57,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:18:57,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2020-09-25 11:18:57,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1361. [2020-09-25 11:18:57,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1361 states. [2020-09-25 11:18:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1737 transitions. [2020-09-25 11:18:57,727 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1737 transitions. Word has length 169 [2020-09-25 11:18:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:18:57,729 INFO L479 AbstractCegarLoop]: Abstraction has 1361 states and 1737 transitions. [2020-09-25 11:18:57,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:18:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1737 transitions. [2020-09-25 11:18:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 11:18:57,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:18:57,741 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:18:57,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:18:57,742 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:18:57,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:18:57,742 INFO L82 PathProgramCache]: Analyzing trace with hash 715941429, now seen corresponding path program 1 times [2020-09-25 11:18:57,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:18:57,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878142780] [2020-09-25 11:18:57,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:18:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:57,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:58,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:58,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 11:18:59,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:18:59,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1683 [2020-09-25 11:18:59,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:18:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:18:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 11:18:59,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:59,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:18:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:59,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:18:59,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:59,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:18:59,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:18:59,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:18:59,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:18:59,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:59,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:18:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:18:59,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:18:59,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:18:59,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 11:18:59,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:18:59,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 11:18:59,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:18:59,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:18:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:18:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:18:59,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:18:59,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:18:59,835 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:18:59,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878142780] [2020-09-25 11:18:59,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:18:59,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:18:59,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212094231] [2020-09-25 11:18:59,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:18:59,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:18:59,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:18:59,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:18:59,843 INFO L87 Difference]: Start difference. First operand 1361 states and 1737 transitions. Second operand 7 states. [2020-09-25 11:19:02,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:02,111 INFO L93 Difference]: Finished difference Result 3423 states and 4611 transitions. [2020-09-25 11:19:02,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:19:02,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-25 11:19:02,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:02,125 INFO L225 Difference]: With dead ends: 3423 [2020-09-25 11:19:02,126 INFO L226 Difference]: Without dead ends: 2227 [2020-09-25 11:19:02,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:19:02,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2020-09-25 11:19:02,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2153. [2020-09-25 11:19:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2020-09-25 11:19:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 2640 transitions. [2020-09-25 11:19:02,201 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 2640 transitions. Word has length 171 [2020-09-25 11:19:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:02,201 INFO L479 AbstractCegarLoop]: Abstraction has 2153 states and 2640 transitions. [2020-09-25 11:19:02,201 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 2640 transitions. [2020-09-25 11:19:02,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-09-25 11:19:02,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:02,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:02,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:02,208 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:02,209 INFO L82 PathProgramCache]: Analyzing trace with hash -883468643, now seen corresponding path program 1 times [2020-09-25 11:19:02,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:02,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435194302] [2020-09-25 11:19:02,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:02,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:02,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:03,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:05,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:07,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-25 11:19:07,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:19:07,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 11:19:07,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:07,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:07,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 11:19:07,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:07,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:07,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:07,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:07,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:19:07,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:07,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:07,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:07,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:07,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:07,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:07,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:07,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:07,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-25 11:19:07,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:07,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:07,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:07,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:19:07,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:07,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:07,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:07,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:07,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:07,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:07,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 11:19:07,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:07,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:07,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 11:19:07,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435194302] [2020-09-25 11:19:07,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:07,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:19:07,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514109788] [2020-09-25 11:19:07,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:19:07,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:07,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:19:07,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:19:07,882 INFO L87 Difference]: Start difference. First operand 2153 states and 2640 transitions. Second operand 9 states. [2020-09-25 11:19:11,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:11,950 INFO L93 Difference]: Finished difference Result 5247 states and 6751 transitions. [2020-09-25 11:19:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:19:11,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 248 [2020-09-25 11:19:11,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:11,970 INFO L225 Difference]: With dead ends: 5247 [2020-09-25 11:19:11,970 INFO L226 Difference]: Without dead ends: 3259 [2020-09-25 11:19:11,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:19:11,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2020-09-25 11:19:12,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 3160. [2020-09-25 11:19:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3160 states. [2020-09-25 11:19:12,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 3989 transitions. [2020-09-25 11:19:12,081 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 3989 transitions. Word has length 248 [2020-09-25 11:19:12,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:12,082 INFO L479 AbstractCegarLoop]: Abstraction has 3160 states and 3989 transitions. [2020-09-25 11:19:12,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:19:12,082 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 3989 transitions. [2020-09-25 11:19:12,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-09-25 11:19:12,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:12,089 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:12,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:12,090 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:12,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:12,090 INFO L82 PathProgramCache]: Analyzing trace with hash 889304234, now seen corresponding path program 1 times [2020-09-25 11:19:12,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:12,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026314136] [2020-09-25 11:19:12,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:13,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:14,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:14,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:16,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:17,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-09-25 11:19:17,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:19:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 11:19:17,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:17,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:17,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:19:17,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 196 [2020-09-25 11:19:17,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:17,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:17,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:17,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:19:17,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:17,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:17,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:17,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:17,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:17,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:17,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-25 11:19:17,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:17,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:17,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:17,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:17,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:19:17,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:17,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 11:19:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:17,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:17,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:17,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:19:17,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 393 [2020-09-25 11:19:17,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:17,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:17,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:19:17,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 129 proven. 4 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-09-25 11:19:18,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026314136] [2020-09-25 11:19:18,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:18,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:19:18,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117017791] [2020-09-25 11:19:18,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:19:18,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:18,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:19:18,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:18,313 INFO L87 Difference]: Start difference. First operand 3160 states and 3989 transitions. Second operand 10 states. [2020-09-25 11:19:22,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:22,030 INFO L93 Difference]: Finished difference Result 7146 states and 9339 transitions. [2020-09-25 11:19:22,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:19:22,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 252 [2020-09-25 11:19:22,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:22,055 INFO L225 Difference]: With dead ends: 7146 [2020-09-25 11:19:22,055 INFO L226 Difference]: Without dead ends: 4113 [2020-09-25 11:19:22,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 11:19:22,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2020-09-25 11:19:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 3913. [2020-09-25 11:19:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3913 states. [2020-09-25 11:19:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 4871 transitions. [2020-09-25 11:19:22,225 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 4871 transitions. Word has length 252 [2020-09-25 11:19:22,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:22,226 INFO L479 AbstractCegarLoop]: Abstraction has 3913 states and 4871 transitions. [2020-09-25 11:19:22,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:22,227 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 4871 transitions. [2020-09-25 11:19:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-25 11:19:22,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:22,240 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:19:22,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:19:22,240 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:22,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:22,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1284380673, now seen corresponding path program 1 times [2020-09-25 11:19:22,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:22,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [466501698] [2020-09-25 11:19:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:22,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:22,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking...