/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:56:16,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:56:16,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:56:16,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:56:16,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:56:16,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:56:16,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:56:16,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:56:16,926 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:56:16,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:56:16,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:56:16,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:56:16,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:56:16,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:56:16,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:56:16,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:56:16,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:56:16,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:56:16,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:56:16,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:56:16,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:56:16,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:56:16,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:56:16,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:56:16,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:56:16,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:56:16,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:56:16,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:56:16,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:56:16,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:56:16,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:56:16,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:56:16,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:56:16,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:56:16,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:56:16,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:56:16,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:56:16,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:56:16,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:56:16,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:56:16,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:56:16,986 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 07:56:17,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:56:17,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:56:17,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:56:17,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:56:17,047 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:56:17,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:56:17,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:56:17,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:56:17,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:56:17,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:56:17,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:56:17,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:56:17,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:56:17,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:56:17,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:56:17,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:56:17,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:56:17,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:56:17,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:56:17,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:56:17,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:56:17,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:56:17,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:56:17,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:56:17,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:56:17,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:56:17,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:56:17,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:56:17,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:56:17,056 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:56:17,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:56:17,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:56:17,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:56:17,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:56:17,629 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:56:17,630 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 07:56:17,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d15648a0/76b79c4f73e044aa8cc543b66e0652c2/FLAG9cd1da0c1 [2020-09-25 07:56:18,375 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:56:18,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label20.c [2020-09-25 07:56:18,389 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d15648a0/76b79c4f73e044aa8cc543b66e0652c2/FLAG9cd1da0c1 [2020-09-25 07:56:18,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d15648a0/76b79c4f73e044aa8cc543b66e0652c2 [2020-09-25 07:56:18,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:56:18,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:56:18,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:18,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:56:18,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:56:18,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:18" (1/1) ... [2020-09-25 07:56:18,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a94c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:18, skipping insertion in model container [2020-09-25 07:56:18,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:56:18" (1/1) ... [2020-09-25 07:56:18,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:56:18,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:56:19,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:19,179 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:56:19,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:56:19,451 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:56:19,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19 WrapperNode [2020-09-25 07:56:19,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:56:19,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:56:19,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:56:19,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:56:19,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (1/1) ... [2020-09-25 07:56:19,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:56:19,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:56:19,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:56:19,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:56:19,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (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 07:56:19,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:56:19,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:56:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:56:19,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:56:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:56:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:56:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:56:19,651 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:56:19,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:56:19,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:56:19,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:56:21,119 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:56:21,120 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:56:21,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:21 BoogieIcfgContainer [2020-09-25 07:56:21,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:56:21,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:56:21,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:56:21,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:56:21,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:56:18" (1/3) ... [2020-09-25 07:56:21,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479b6089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:21, skipping insertion in model container [2020-09-25 07:56:21,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:56:19" (2/3) ... [2020-09-25 07:56:21,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@479b6089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:56:21, skipping insertion in model container [2020-09-25 07:56:21,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:56:21" (3/3) ... [2020-09-25 07:56:21,150 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label20.c [2020-09-25 07:56:21,164 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:56:21,184 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:56:21,211 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:56:21,257 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:56:21,258 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:56:21,258 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:56:21,259 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:56:21,259 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:56:21,259 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:56:21,259 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:56:21,259 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:56:21,300 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:56:21,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 07:56:21,313 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:21,314 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] [2020-09-25 07:56:21,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:21,321 INFO L82 PathProgramCache]: Analyzing trace with hash 1331013031, now seen corresponding path program 1 times [2020-09-25 07:56:21,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:21,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959775757] [2020-09-25 07:56:21,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:21,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:21,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:21,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 07:56:21,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:21,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-09-25 07:56:21,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:21,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:21,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:56:21,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 07:56:21,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:56:22,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:22,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:22,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:22,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:22,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 07:56:22,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:22,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:22,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:56:22,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:22,219 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 07:56:22,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959775757] [2020-09-25 07:56:22,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:22,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:56:22,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575424168] [2020-09-25 07:56:22,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:56:22,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:22,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:56:22,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:56:22,255 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:56:24,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:24,276 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 07:56:24,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:56:24,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-25 07:56:24,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:24,303 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 07:56:24,303 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 07:56:24,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:56:24,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 07:56:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 07:56:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 07:56:24,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 07:56:24,458 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 47 [2020-09-25 07:56:24,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:24,460 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 07:56:24,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:56:24,460 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 07:56:24,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 07:56:24,476 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:24,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:24,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:56:24,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:24,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:24,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1207738435, now seen corresponding path program 1 times [2020-09-25 07:56:24,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:24,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [696317606] [2020-09-25 07:56:24,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:24,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:24,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:26,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 07:56:26,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:56:26,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1874 [2020-09-25 07:56:26,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:26,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:26,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:56:26,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:56:26,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:56:26,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:26,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:26,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:26,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:26,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:56:26,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:26,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:26,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:56:26,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:26,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:26,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:26,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 07:56:26,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:26,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-25 07:56:26,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:26,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:26,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:26,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:56:26,936 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:26,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [696317606] [2020-09-25 07:56:26,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:26,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:56:26,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521791022] [2020-09-25 07:56:26,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:56:26,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:26,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:56:26,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:56:26,943 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 07:56:29,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:29,187 INFO L93 Difference]: Finished difference Result 1258 states and 1571 transitions. [2020-09-25 07:56:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 07:56:29,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-09-25 07:56:29,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:29,193 INFO L225 Difference]: With dead ends: 1258 [2020-09-25 07:56:29,193 INFO L226 Difference]: Without dead ends: 730 [2020-09-25 07:56:29,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:56:29,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-25 07:56:29,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 699. [2020-09-25 07:56:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 07:56:29,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 855 transitions. [2020-09-25 07:56:29,232 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 855 transitions. Word has length 127 [2020-09-25 07:56:29,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:29,233 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 855 transitions. [2020-09-25 07:56:29,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:56:29,234 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 855 transitions. [2020-09-25 07:56:29,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 07:56:29,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:29,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:29,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:56:29,236 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:29,237 INFO L82 PathProgramCache]: Analyzing trace with hash 843318586, now seen corresponding path program 1 times [2020-09-25 07:56:29,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:29,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647294859] [2020-09-25 07:56:29,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:29,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:29,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:32,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:32,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:32,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:34,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 07:56:34,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:56:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4760 [2020-09-25 07:56:34,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:34,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:34,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 07:56:34,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:34,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:34,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:34,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:56:34,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:34,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:34,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:34,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:34,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:34,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:34,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:34,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 07:56:34,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:34,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:34,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:34,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:34,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647294859] [2020-09-25 07:56:34,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:34,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:56:34,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836374565] [2020-09-25 07:56:34,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:56:34,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:34,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:56:34,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:56:34,406 INFO L87 Difference]: Start difference. First operand 699 states and 855 transitions. Second operand 6 states. [2020-09-25 07:56:37,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:37,180 INFO L93 Difference]: Finished difference Result 1925 states and 2517 transitions. [2020-09-25 07:56:37,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:56:37,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-09-25 07:56:37,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:37,197 INFO L225 Difference]: With dead ends: 1925 [2020-09-25 07:56:37,197 INFO L226 Difference]: Without dead ends: 1391 [2020-09-25 07:56:37,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-09-25 07:56:37,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1335. [2020-09-25 07:56:37,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2020-09-25 07:56:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1725 transitions. [2020-09-25 07:56:37,283 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1725 transitions. Word has length 136 [2020-09-25 07:56:37,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:37,290 INFO L479 AbstractCegarLoop]: Abstraction has 1335 states and 1725 transitions. [2020-09-25 07:56:37,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:56:37,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1725 transitions. [2020-09-25 07:56:37,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 07:56:37,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:37,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:56:37,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:56:37,295 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:37,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:37,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1301933938, now seen corresponding path program 1 times [2020-09-25 07:56:37,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:37,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234976725] [2020-09-25 07:56:37,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:37,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:37,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:38,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:39,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:39,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 07:56:39,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:56:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2056 [2020-09-25 07:56:39,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:39,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 07:56:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:56:39,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:39,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:39,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:39,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:39,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:39,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:39,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:56:39,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:39,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:39,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:39,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:56:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:39,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:39,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:39,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:39,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:56:39,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:39,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 07:56:39,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:39,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:39,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:56:39,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:56:39,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234976725] [2020-09-25 07:56:39,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:56:39,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 07:56:39,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948499407] [2020-09-25 07:56:39,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:56:39,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:39,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:56:39,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:39,766 INFO L87 Difference]: Start difference. First operand 1335 states and 1725 transitions. Second operand 8 states. [2020-09-25 07:56:42,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:42,840 INFO L93 Difference]: Finished difference Result 4265 states and 5989 transitions. [2020-09-25 07:56:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:56:42,845 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-09-25 07:56:42,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:42,872 INFO L225 Difference]: With dead ends: 4265 [2020-09-25 07:56:42,872 INFO L226 Difference]: Without dead ends: 3095 [2020-09-25 07:56:42,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:56:42,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2020-09-25 07:56:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 2757. [2020-09-25 07:56:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2757 states. [2020-09-25 07:56:43,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3617 transitions. [2020-09-25 07:56:43,016 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3617 transitions. Word has length 138 [2020-09-25 07:56:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:43,018 INFO L479 AbstractCegarLoop]: Abstraction has 2757 states and 3617 transitions. [2020-09-25 07:56:43,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:56:43,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3617 transitions. [2020-09-25 07:56:43,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 07:56:43,025 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:43,025 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, 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] [2020-09-25 07:56:43,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:56:43,026 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:43,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:43,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1068014475, now seen corresponding path program 1 times [2020-09-25 07:56:43,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:43,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871889422] [2020-09-25 07:56:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:43,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:43,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:44,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:45,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:47,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:48,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-09-25 07:56:48,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:56:48,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 07:56:48,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:48,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:48,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:56:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:56:48,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 07:56:48,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:48,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:48,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:48,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:48,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:48,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:56:48,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:48,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:48,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:48,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:48,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:48,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:56:48,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:48,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 07:56:48,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:48,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:56:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:48,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:56:48,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:48,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:56:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:48,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:48,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:48,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 07:56:48,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:56:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 503 [2020-09-25 07:56:48,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:48,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 07:56:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:49,005 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 07:56:49,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871889422] [2020-09-25 07:56:49,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:49,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:56:49,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381672909] [2020-09-25 07:56:49,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:56:49,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:49,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:56:49,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:56:49,008 INFO L87 Difference]: Start difference. First operand 2757 states and 3617 transitions. Second operand 9 states. [2020-09-25 07:56:53,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:53,237 INFO L93 Difference]: Finished difference Result 6174 states and 8387 transitions. [2020-09-25 07:56:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:56:53,238 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 218 [2020-09-25 07:56:53,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:53,257 INFO L225 Difference]: With dead ends: 6174 [2020-09-25 07:56:53,258 INFO L226 Difference]: Without dead ends: 3556 [2020-09-25 07:56:53,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:56:53,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3556 states. [2020-09-25 07:56:53,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3556 to 3519. [2020-09-25 07:56:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3519 states. [2020-09-25 07:56:53,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3519 states to 3519 states and 4569 transitions. [2020-09-25 07:56:53,372 INFO L78 Accepts]: Start accepts. Automaton has 3519 states and 4569 transitions. Word has length 218 [2020-09-25 07:56:53,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:53,373 INFO L479 AbstractCegarLoop]: Abstraction has 3519 states and 4569 transitions. [2020-09-25 07:56:53,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:56:53,374 INFO L276 IsEmpty]: Start isEmpty. Operand 3519 states and 4569 transitions. [2020-09-25 07:56:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 07:56:53,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:53,378 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, 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 07:56:53,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:53,379 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:53,379 INFO L82 PathProgramCache]: Analyzing trace with hash -862349572, now seen corresponding path program 1 times [2020-09-25 07:56:53,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:53,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149821426] [2020-09-25 07:56:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:53,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:54,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:55,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:56,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:56,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:57,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:58,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:58,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-25 07:56:58,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:56:58,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:56:58,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:58,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:56:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:58,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 07:56:58,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:58,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:58,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:58,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:58,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:58,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:58,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:56:58,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:58,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:58,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:58,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:58,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:58,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:58,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 07:56:58,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:58,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:58,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 07:56:58,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:58,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:58,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:59,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:59,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 07:56:59,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:59,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 07:56:59,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:59,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 07:56:59,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:59,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149821426] [2020-09-25 07:56:59,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:59,259 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 07:56:59,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443075417] [2020-09-25 07:56:59,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:56:59,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:59,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:56:59,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:56:59,260 INFO L87 Difference]: Start difference. First operand 3519 states and 4569 transitions. Second operand 10 states. [2020-09-25 07:57:03,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:57:03,679 INFO L93 Difference]: Finished difference Result 7392 states and 9619 transitions. [2020-09-25 07:57:03,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 07:57:03,680 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 219 [2020-09-25 07:57:03,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:57:03,701 INFO L225 Difference]: With dead ends: 7392 [2020-09-25 07:57:03,701 INFO L226 Difference]: Without dead ends: 4038 [2020-09-25 07:57:03,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-09-25 07:57:03,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4038 states. [2020-09-25 07:57:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4038 to 3527. [2020-09-25 07:57:03,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3527 states. [2020-09-25 07:57:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3527 states to 3527 states and 4563 transitions. [2020-09-25 07:57:03,823 INFO L78 Accepts]: Start accepts. Automaton has 3527 states and 4563 transitions. Word has length 219 [2020-09-25 07:57:03,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:57:03,823 INFO L479 AbstractCegarLoop]: Abstraction has 3527 states and 4563 transitions. [2020-09-25 07:57:03,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:57:03,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3527 states and 4563 transitions. [2020-09-25 07:57:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-25 07:57:03,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:57:03,828 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, 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] [2020-09-25 07:57:03,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:57:03,829 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:57:03,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:57:03,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1921860465, now seen corresponding path program 1 times [2020-09-25 07:57:03,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:57:03,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771612679] [2020-09-25 07:57:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:57:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:57:03,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:04,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:04,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:57:05,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking...