/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_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:22:17,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:22:17,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:22:17,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:22:17,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:22:17,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:22:17,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:22:17,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:22:17,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:22:17,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:22:17,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:22:17,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:22:17,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:22:17,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:22:17,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:22:17,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:22:17,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:22:17,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:22:18,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:22:18,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:22:18,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:22:18,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:22:18,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:22:18,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:22:18,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:22:18,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:22:18,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:22:18,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:22:18,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:22:18,039 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:22:18,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:22:18,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:22:18,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:22:18,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:22:18,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:22:18,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:22:18,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:22:18,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:22:18,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:22:18,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:22:18,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:22:18,051 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 12:22:18,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:22:18,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:22:18,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:22:18,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:22:18,097 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:22:18,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:22:18,097 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:22:18,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:22:18,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:22:18,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:22:18,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:22:18,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:22:18,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:22:18,100 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:22:18,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:22:18,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:22:18,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:22:18,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:22:18,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:22:18,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:22:18,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:22:18,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:18,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:22:18,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:22:18,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:22:18,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:22:18,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:22:18,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:22:18,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:22:18,103 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 12:22:18,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:22:18,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:22:18,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:22:18,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:22:18,603 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:22:18,604 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 12:22:18,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1553f0652/6af3e7926fe048158781afb437e122e9/FLAG251a231c1 [2020-09-25 12:22:19,296 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:22:19,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label50.c [2020-09-25 12:22:19,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1553f0652/6af3e7926fe048158781afb437e122e9/FLAG251a231c1 [2020-09-25 12:22:19,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1553f0652/6af3e7926fe048158781afb437e122e9 [2020-09-25 12:22:19,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:22:19,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:22:19,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:19,570 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:22:19,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:22:19,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:19" (1/1) ... [2020-09-25 12:22:19,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a03fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:19, skipping insertion in model container [2020-09-25 12:22:19,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:19" (1/1) ... [2020-09-25 12:22:19,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:22:19,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:22:20,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:20,204 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:22:20,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:20,471 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:22:20,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:20 WrapperNode [2020-09-25 12:22:20,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:20,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:22:20,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:22:20,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:22:20,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:20" (1/1) ... [2020-09-25 12:22:20,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:20" (1/1) ... [2020-09-25 12:22:20,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:20" (1/1) ... [2020-09-25 12:22:20,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:20" (1/1) ... [2020-09-25 12:22:20,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:20" (1/1) ... [2020-09-25 12:22:20,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:20" (1/1) ... [2020-09-25 12:22:20,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:20" (1/1) ... [2020-09-25 12:22:20,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:22:20,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:22:20,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:22:20,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:22:20,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:20" (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 12:22:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:22:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:22:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:22:20,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:22:20,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:22:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:22:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:22:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:22:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:22:20,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:22:20,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:22:22,044 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:22:22,045 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:22:22,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:22 BoogieIcfgContainer [2020-09-25 12:22:22,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:22:22,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:22:22,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:22:22,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:22:22,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:22:19" (1/3) ... [2020-09-25 12:22:22,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b6419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:22, skipping insertion in model container [2020-09-25 12:22:22,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:20" (2/3) ... [2020-09-25 12:22:22,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b6419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:22, skipping insertion in model container [2020-09-25 12:22:22,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:22" (3/3) ... [2020-09-25 12:22:22,064 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label50.c [2020-09-25 12:22:22,077 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:22:22,094 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:22:22,120 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:22:22,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:22:22,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:22:22,175 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:22:22,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:22:22,176 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:22:22,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:22:22,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:22:22,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:22:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:22:22,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 12:22:22,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:22,270 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] [2020-09-25 12:22:22,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:22,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:22,279 INFO L82 PathProgramCache]: Analyzing trace with hash 249673445, now seen corresponding path program 1 times [2020-09-25 12:22:22,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:22,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234330163] [2020-09-25 12:22:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:22,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:23,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:23,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:24,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:25,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:26,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:27,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:27,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 12:22:27,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:22:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:22:27,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:27,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:22:27,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 12:22:27,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 12:22:27,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:27,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:27,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:27,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:27,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:27,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:22:27,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:27,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:27,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:22:27,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:22:27,877 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 12:22:27,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234330163] [2020-09-25 12:22:27,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:27,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:22:27,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958494706] [2020-09-25 12:22:27,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:27,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:27,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:27,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:27,919 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 12:22:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:30,083 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 12:22:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:22:30,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 107 [2020-09-25 12:22:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:30,111 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 12:22:30,111 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 12:22:30,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 12:22:30,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 12:22:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 12:22:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 12:22:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 12:22:30,255 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 107 [2020-09-25 12:22:30,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:30,257 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 12:22:30,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 12:22:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 12:22:30,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:30,264 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:22:30,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:22:30,264 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:30,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:30,265 INFO L82 PathProgramCache]: Analyzing trace with hash -191439372, now seen corresponding path program 1 times [2020-09-25 12:22:30,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:30,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627586027] [2020-09-25 12:22:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:30,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:30,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:31,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:31,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:31,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:31,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:34,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:34,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 12:22:34,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:22:34,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4565 [2020-09-25 12:22:34,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:34,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:34,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 12:22:34,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 12:22:34,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:35,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:35,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:35,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:35,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:35,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:22:35,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:35,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:35,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:35,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:35,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:35,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:35,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:35,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:35,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:35,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:22:35,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:35,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:22:35,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:35,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:35,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:22:35,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:35,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627586027] [2020-09-25 12:22:35,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:35,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:35,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148875630] [2020-09-25 12:22:35,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:35,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:35,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:35,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:35,129 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 5 states. [2020-09-25 12:22:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:37,297 INFO L93 Difference]: Finished difference Result 1499 states and 1884 transitions. [2020-09-25 12:22:37,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:37,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-25 12:22:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:37,305 INFO L225 Difference]: With dead ends: 1499 [2020-09-25 12:22:37,306 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 12:22:37,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 12:22:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 12:22:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 748. [2020-09-25 12:22:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 12:22:37,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 899 transitions. [2020-09-25 12:22:37,347 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 899 transitions. Word has length 128 [2020-09-25 12:22:37,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:37,348 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 899 transitions. [2020-09-25 12:22:37,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:37,348 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 899 transitions. [2020-09-25 12:22:37,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 12:22:37,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:37,352 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:22:37,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:22:37,352 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:37,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:37,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1459519869, now seen corresponding path program 1 times [2020-09-25 12:22:37,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:37,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090078050] [2020-09-25 12:22:37,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:37,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:38,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:38,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:38,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:39,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:42,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:42,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 12:22:42,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:22:42,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:22:42,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:42,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 12:22:42,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 12:22:42,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:42,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:42,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:42,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:42,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:42,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:42,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:22:42,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:42,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:42,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:42,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:42,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:42,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:42,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:42,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:42,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:22:42,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:22:42,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:42,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:42,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:22:42,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:42,761 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:42,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090078050] [2020-09-25 12:22:42,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:42,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:42,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840484696] [2020-09-25 12:22:42,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:42,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:42,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:42,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:42,764 INFO L87 Difference]: Start difference. First operand 748 states and 899 transitions. Second operand 5 states. [2020-09-25 12:22:44,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:44,635 INFO L93 Difference]: Finished difference Result 1934 states and 2420 transitions. [2020-09-25 12:22:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:44,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 12:22:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:44,648 INFO L225 Difference]: With dead ends: 1934 [2020-09-25 12:22:44,652 INFO L226 Difference]: Without dead ends: 1210 [2020-09-25 12:22:44,656 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 12:22:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-09-25 12:22:44,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 748. [2020-09-25 12:22:44,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 12:22:44,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 899 transitions. [2020-09-25 12:22:44,712 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 899 transitions. Word has length 132 [2020-09-25 12:22:44,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:44,714 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 899 transitions. [2020-09-25 12:22:44,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:44,714 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 899 transitions. [2020-09-25 12:22:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 12:22:44,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:44,720 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:22:44,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:22:44,720 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:44,729 INFO L82 PathProgramCache]: Analyzing trace with hash -645015236, now seen corresponding path program 1 times [2020-09-25 12:22:44,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:44,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786877485] [2020-09-25 12:22:44,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:44,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:44,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:45,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:46,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:46,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 12:22:46,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:22:46,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1656 [2020-09-25 12:22:46,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:46,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:46,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:46,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:22:46,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:22:46,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:46,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:46,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:46,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:46,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:46,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:22:46,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:46,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:46,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:46,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:46,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:22:46,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:46,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:46,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:46,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:22:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 12:22:46,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:46,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:22:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:22:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:46,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786877485] [2020-09-25 12:22:46,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:46,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:22:46,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651593533] [2020-09-25 12:22:46,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:22:46,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:46,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:22:46,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:22:46,720 INFO L87 Difference]: Start difference. First operand 748 states and 899 transitions. Second operand 7 states. [2020-09-25 12:22:48,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:48,662 INFO L93 Difference]: Finished difference Result 1849 states and 2287 transitions. [2020-09-25 12:22:48,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:22:48,664 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-09-25 12:22:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:48,672 INFO L225 Difference]: With dead ends: 1849 [2020-09-25 12:22:48,672 INFO L226 Difference]: Without dead ends: 1125 [2020-09-25 12:22:48,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:22:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-09-25 12:22:48,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1057. [2020-09-25 12:22:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2020-09-25 12:22:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1281 transitions. [2020-09-25 12:22:48,722 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1281 transitions. Word has length 137 [2020-09-25 12:22:48,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:48,722 INFO L479 AbstractCegarLoop]: Abstraction has 1057 states and 1281 transitions. [2020-09-25 12:22:48,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:22:48,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1281 transitions. [2020-09-25 12:22:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 12:22:48,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:48,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:48,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:22:48,731 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:48,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:48,732 INFO L82 PathProgramCache]: Analyzing trace with hash -583826406, now seen corresponding path program 1 times [2020-09-25 12:22:48,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:48,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194024944] [2020-09-25 12:22:48,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:48,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:48,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:49,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:49,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:49,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:50,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:52,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:53,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:53,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 12:22:53,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:22:53,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 12:22:53,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:53,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:22:53,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-09-25 12:22:53,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 12:22:53,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:22:53,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:53,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:53,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:53,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:53,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:53,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:22:53,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:53,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:22:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:22:53,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:53,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:22:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:53,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:54,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:54,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 12:22:54,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:54,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 12:22:54,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:54,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:54,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:54,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:54,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:22:54,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:22:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:22:54,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194024944] [2020-09-25 12:22:54,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:22:54,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:22:54,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469347063] [2020-09-25 12:22:54,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:22:54,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:54,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:22:54,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:22:54,077 INFO L87 Difference]: Start difference. First operand 1057 states and 1281 transitions. Second operand 5 states. [2020-09-25 12:22:56,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:22:56,313 INFO L93 Difference]: Finished difference Result 2879 states and 3631 transitions. [2020-09-25 12:22:56,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:22:56,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 12:22:56,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:22:56,324 INFO L225 Difference]: With dead ends: 2879 [2020-09-25 12:22:56,324 INFO L226 Difference]: Without dead ends: 1688 [2020-09-25 12:22:56,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 12:22:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-09-25 12:22:56,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1621. [2020-09-25 12:22:56,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1621 states. [2020-09-25 12:22:56,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1621 states to 1621 states and 1992 transitions. [2020-09-25 12:22:56,392 INFO L78 Accepts]: Start accepts. Automaton has 1621 states and 1992 transitions. Word has length 142 [2020-09-25 12:22:56,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:22:56,392 INFO L479 AbstractCegarLoop]: Abstraction has 1621 states and 1992 transitions. [2020-09-25 12:22:56,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:22:56,392 INFO L276 IsEmpty]: Start isEmpty. Operand 1621 states and 1992 transitions. [2020-09-25 12:22:56,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 12:22:56,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:56,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:22:56,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:22:56,402 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:56,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:56,403 INFO L82 PathProgramCache]: Analyzing trace with hash 281598029, now seen corresponding path program 1 times [2020-09-25 12:22:56,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:56,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572525703] [2020-09-25 12:22:56,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:56,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:56,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:56,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:56,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:56,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:56,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:00,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:00,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 12:23:00,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:23:00,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4473 [2020-09-25 12:23:00,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:00,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:00,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:23:00,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 12:23:00,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:23:00,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:01,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:01,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:01,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:23:01,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:01,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:23:01,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:01,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:01,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:01,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 12:23:01,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:01,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:23:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:01,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:01,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:23:01,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:01,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 12:23:01,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:01,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:23:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:23:01,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:23:01,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:01,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 12:23:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:01,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:01,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:23:01,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:01,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 12:23:01,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:01,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:01,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:23:01,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:23:01,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:23:01,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572525703] [2020-09-25 12:23:01,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:01,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:23:01,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351262597] [2020-09-25 12:23:01,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:23:01,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:01,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:23:01,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:23:01,369 INFO L87 Difference]: Start difference. First operand 1621 states and 1992 transitions. Second operand 10 states. [2020-09-25 12:23:01,636 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-25 12:23:03,186 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-09-25 12:23:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:05,849 INFO L93 Difference]: Finished difference Result 4747 states and 6018 transitions. [2020-09-25 12:23:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 12:23:05,850 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-09-25 12:23:05,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:05,863 INFO L225 Difference]: With dead ends: 4747 [2020-09-25 12:23:05,864 INFO L226 Difference]: Without dead ends: 2537 [2020-09-25 12:23:05,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-09-25 12:23:05,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2020-09-25 12:23:05,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2522. [2020-09-25 12:23:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2522 states. [2020-09-25 12:23:05,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 2878 transitions. [2020-09-25 12:23:05,943 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 2878 transitions. Word has length 158 [2020-09-25 12:23:05,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:05,944 INFO L479 AbstractCegarLoop]: Abstraction has 2522 states and 2878 transitions. [2020-09-25 12:23:05,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:23:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 2878 transitions. [2020-09-25 12:23:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 12:23:05,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:05,951 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:23:05,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:23:05,952 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:05,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:05,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1490542447, now seen corresponding path program 1 times [2020-09-25 12:23:05,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:05,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863992997] [2020-09-25 12:23:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:06,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:06,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:06,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking...