/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/Problem01_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:52:21,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:52:21,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:52:21,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:52:21,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:52:21,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:52:21,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:52:21,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:52:21,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:52:21,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:52:21,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:52:21,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:52:21,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:52:21,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:52:21,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:52:21,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:52:21,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:52:21,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:52:21,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:52:21,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:52:21,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:52:21,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:52:21,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:52:21,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:52:21,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:52:21,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:52:21,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:52:21,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:52:21,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:52:21,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:52:21,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:52:21,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:52:21,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:52:21,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:52:21,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:52:21,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:52:21,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:52:21,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:52:21,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:52:21,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:52:21,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:52:21,386 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 07:52:21,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:52:21,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:52:21,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:52:21,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:52:21,431 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:52:21,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:52:21,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:52:21,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:52:21,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:52:21,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:52:21,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:52:21,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:52:21,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:52:21,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:52:21,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:52:21,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:52:21,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:52:21,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:52:21,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:52:21,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:52:21,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:52:21,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:52:21,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:52:21,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:52:21,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:52:21,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:52:21,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:52:21,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:52:21,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:52:21,438 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 07:52:21,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:52:21,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:52:21,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:52:21,888 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:52:21,889 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:52:21,890 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 07:52:21,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/daa833208/a167dae195c04e30b4f4e2b6406ca38b/FLAGefdaa1b22 [2020-09-25 07:52:22,603 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:52:22,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 07:52:22,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/daa833208/a167dae195c04e30b4f4e2b6406ca38b/FLAGefdaa1b22 [2020-09-25 07:52:22,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/daa833208/a167dae195c04e30b4f4e2b6406ca38b [2020-09-25 07:52:22,852 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:52:22,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:52:22,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:22,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:52:22,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:52:22,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:22" (1/1) ... [2020-09-25 07:52:22,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:22, skipping insertion in model container [2020-09-25 07:52:22,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:52:22" (1/1) ... [2020-09-25 07:52:22,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:52:22,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:52:23,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:23,432 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:52:23,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:52:23,668 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:52:23,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:23 WrapperNode [2020-09-25 07:52:23,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:52:23,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:52:23,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:52:23,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:52:23,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:23" (1/1) ... [2020-09-25 07:52:23,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:23" (1/1) ... [2020-09-25 07:52:23,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:23" (1/1) ... [2020-09-25 07:52:23,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:23" (1/1) ... [2020-09-25 07:52:23,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:23" (1/1) ... [2020-09-25 07:52:23,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:23" (1/1) ... [2020-09-25 07:52:23,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:23" (1/1) ... [2020-09-25 07:52:23,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:52:23,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:52:23,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:52:23,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:52:23,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:23" (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 07:52:23,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:52:23,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:52:23,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:52:23,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:52:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:52:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:52:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:52:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:52:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:52:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:52:23,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:52:25,158 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:52:25,159 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:52:25,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:25 BoogieIcfgContainer [2020-09-25 07:52:25,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:52:25,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:52:25,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:52:25,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:52:25,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:52:22" (1/3) ... [2020-09-25 07:52:25,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:25, skipping insertion in model container [2020-09-25 07:52:25,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:52:23" (2/3) ... [2020-09-25 07:52:25,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:52:25, skipping insertion in model container [2020-09-25 07:52:25,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:52:25" (3/3) ... [2020-09-25 07:52:25,187 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label56.c [2020-09-25 07:52:25,197 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:52:25,212 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:52:25,235 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:52:25,277 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:52:25,277 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:52:25,278 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:52:25,278 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:52:25,278 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:52:25,278 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:52:25,278 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:52:25,278 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:52:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 07:52:25,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 07:52:25,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:25,330 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] [2020-09-25 07:52:25,330 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:25,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:25,338 INFO L82 PathProgramCache]: Analyzing trace with hash 602782831, now seen corresponding path program 1 times [2020-09-25 07:52:25,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:25,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-25 07:52:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:25,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:28,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:29,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:30,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-25 07:52:30,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:52:30,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 07:52:30,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:30,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:52:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:52:30,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 07:52:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:52:30,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:30,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:30,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:30,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:30,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 07:52:30,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:30,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:30,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:30,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:30,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:30,897 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 07:52:30,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-25 07:52:30,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:52:30,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:52:30,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758911342] [2020-09-25 07:52:30,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:52:30,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:30,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:52:30,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:52:30,932 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 07:52:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:33,118 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 07:52:33,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:52:33,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-25 07:52:33,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:33,158 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 07:52:33,159 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 07:52:33,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:33,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 07:52:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 07:52:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 07:52:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 07:52:33,273 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 104 [2020-09-25 07:52:33,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:33,274 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 07:52:33,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:52:33,274 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 07:52:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 07:52:33,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:33,283 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 07:52:33,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:52:33,283 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:33,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:33,284 INFO L82 PathProgramCache]: Analyzing trace with hash -435684201, now seen corresponding path program 1 times [2020-09-25 07:52:33,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:33,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600163189] [2020-09-25 07:52:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:33,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:37,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:38,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 07:52:38,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:52:38,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 07:52:38,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:38,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:38,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 07:52:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 07:52:38,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:52:38,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:38,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:38,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:38,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:38,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:52:38,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:38,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:38,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:38,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:38,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:38,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:38,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:38,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:38,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:52:38,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:38,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 07:52:38,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:38,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:38,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:52:38,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:38,552 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600163189] [2020-09-25 07:52:38,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:38,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:38,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744035239] [2020-09-25 07:52:38,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:38,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:38,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:38,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:38,556 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 07:52:40,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:40,782 INFO L93 Difference]: Finished difference Result 1561 states and 1929 transitions. [2020-09-25 07:52:40,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:40,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2020-09-25 07:52:40,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:40,789 INFO L225 Difference]: With dead ends: 1561 [2020-09-25 07:52:40,789 INFO L226 Difference]: Without dead ends: 982 [2020-09-25 07:52:40,792 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 07:52:40,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-09-25 07:52:40,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 748. [2020-09-25 07:52:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 07:52:40,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 905 transitions. [2020-09-25 07:52:40,836 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 905 transitions. Word has length 125 [2020-09-25 07:52:40,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:40,837 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 905 transitions. [2020-09-25 07:52:40,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:40,837 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 905 transitions. [2020-09-25 07:52:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 07:52:40,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:40,841 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] [2020-09-25 07:52:40,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:52:40,842 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:40,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:40,842 INFO L82 PathProgramCache]: Analyzing trace with hash 305762680, now seen corresponding path program 1 times [2020-09-25 07:52:40,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:40,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91903715] [2020-09-25 07:52:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:40,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:45,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:45,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 07:52:45,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 07:52:45,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 07:52:45,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:45,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:45,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:45,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 07:52:45,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 07:52:45,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:46,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:46,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:46,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:46,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:46,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:46,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:52:46,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:46,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:46,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:46,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:46,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:46,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:46,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:46,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 07:52:46,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:46,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 07:52:46,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:46,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:46,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:52:46,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:46,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91903715] [2020-09-25 07:52:46,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:46,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:46,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217442031] [2020-09-25 07:52:46,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:46,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:46,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:46,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:46,174 INFO L87 Difference]: Start difference. First operand 748 states and 905 transitions. Second operand 5 states. [2020-09-25 07:52:47,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:47,998 INFO L93 Difference]: Finished difference Result 1957 states and 2468 transitions. [2020-09-25 07:52:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:47,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 07:52:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:48,014 INFO L225 Difference]: With dead ends: 1957 [2020-09-25 07:52:48,014 INFO L226 Difference]: Without dead ends: 1233 [2020-09-25 07:52:48,018 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 07:52:48,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-09-25 07:52:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1177. [2020-09-25 07:52:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-25 07:52:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1466 transitions. [2020-09-25 07:52:48,073 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1466 transitions. Word has length 134 [2020-09-25 07:52:48,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:48,075 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1466 transitions. [2020-09-25 07:52:48,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:48,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1466 transitions. [2020-09-25 07:52:48,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 07:52:48,084 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:48,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:48,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:52:48,092 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:48,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:48,093 INFO L82 PathProgramCache]: Analyzing trace with hash 752263732, now seen corresponding path program 1 times [2020-09-25 07:52:48,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:48,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388052289] [2020-09-25 07:52:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:48,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:48,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:48,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:48,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:48,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:48,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:51,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:52,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:53,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 07:52:53,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 07:52:53,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:52:53,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:53,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:53,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:52:53,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 07:52:53,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 07:52:53,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:53,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:52:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:53,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:53,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:53,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 07:52:53,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:53,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:52:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:53,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:52:53,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:52:53,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:52:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:53,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:53,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:52:53,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:52:53,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:52:53,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:52:53,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:52:53,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:52:53,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:52:53,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:52:53,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:52:53,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:52:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:52:53,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388052289] [2020-09-25 07:52:53,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:52:53,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:52:53,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615257024] [2020-09-25 07:52:53,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:52:53,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:52:53,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:52:53,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:52:53,375 INFO L87 Difference]: Start difference. First operand 1177 states and 1466 transitions. Second operand 5 states. [2020-09-25 07:52:55,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:52:55,222 INFO L93 Difference]: Finished difference Result 2982 states and 3833 transitions. [2020-09-25 07:52:55,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:52:55,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-25 07:52:55,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:52:55,240 INFO L225 Difference]: With dead ends: 2982 [2020-09-25 07:52:55,240 INFO L226 Difference]: Without dead ends: 1829 [2020-09-25 07:52:55,245 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 07:52:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2020-09-25 07:52:55,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1463. [2020-09-25 07:52:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1463 states. [2020-09-25 07:52:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 1883 transitions. [2020-09-25 07:52:55,314 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 1883 transitions. Word has length 135 [2020-09-25 07:52:55,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:52:55,314 INFO L479 AbstractCegarLoop]: Abstraction has 1463 states and 1883 transitions. [2020-09-25 07:52:55,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:52:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 1883 transitions. [2020-09-25 07:52:55,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 07:52:55,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:52:55,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:52:55,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:52:55,324 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:52:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:52:55,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1060590272, now seen corresponding path program 1 times [2020-09-25 07:52:55,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:52:55,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206353584] [2020-09-25 07:52:55,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:52:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:52:55,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:55,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:55,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:55,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:57,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:57,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:52:59,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:00,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:00,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:00,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:00,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 07:53:00,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:53:00,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 07:53:00,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:00,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 07:53:00,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 07:53:00,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:00,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:00,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:00,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:00,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:53:00,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:00,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:53:00,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:00,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:00,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:00,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:00,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:00,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:53:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:00,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:00,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:00,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 07:53:00,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:00,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 07:53:00,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:00,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:53:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:00,607 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:00,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206353584] [2020-09-25 07:53:00,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:00,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:00,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717419712] [2020-09-25 07:53:00,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:00,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:00,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:00,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:00,609 INFO L87 Difference]: Start difference. First operand 1463 states and 1883 transitions. Second operand 5 states. [2020-09-25 07:53:02,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:02,145 INFO L93 Difference]: Finished difference Result 3789 states and 5075 transitions. [2020-09-25 07:53:02,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:02,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 07:53:02,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:02,169 INFO L225 Difference]: With dead ends: 3789 [2020-09-25 07:53:02,169 INFO L226 Difference]: Without dead ends: 2350 [2020-09-25 07:53:02,177 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 07:53:02,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2350 states. [2020-09-25 07:53:02,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2350 to 1751. [2020-09-25 07:53:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2020-09-25 07:53:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2244 transitions. [2020-09-25 07:53:02,254 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2244 transitions. Word has length 141 [2020-09-25 07:53:02,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:02,255 INFO L479 AbstractCegarLoop]: Abstraction has 1751 states and 2244 transitions. [2020-09-25 07:53:02,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:02,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2244 transitions. [2020-09-25 07:53:02,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 07:53:02,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:02,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:53:02,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:53:02,262 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:02,263 INFO L82 PathProgramCache]: Analyzing trace with hash -620063423, now seen corresponding path program 1 times [2020-09-25 07:53:02,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:02,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191555307] [2020-09-25 07:53:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:02,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:04,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:06,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:07,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 07:53:07,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 07:53:07,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 07:53:07,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:07,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:07,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:07,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 07:53:07,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 07:53:07,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:07,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:07,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:07,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:53:07,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:07,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 07:53:07,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:07,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:07,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:07,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:07,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:07,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:07,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:53:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:07,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:07,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:07,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 07:53:07,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:07,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 07:53:07,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:07,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:07,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:53:07,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:53:07,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191555307] [2020-09-25 07:53:07,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:07,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 07:53:07,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574059705] [2020-09-25 07:53:07,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 07:53:07,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:07,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 07:53:07,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:53:07,512 INFO L87 Difference]: Start difference. First operand 1751 states and 2244 transitions. Second operand 5 states. [2020-09-25 07:53:09,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:53:09,273 INFO L93 Difference]: Finished difference Result 4369 states and 5771 transitions. [2020-09-25 07:53:09,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 07:53:09,273 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 07:53:09,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:53:09,288 INFO L225 Difference]: With dead ends: 4369 [2020-09-25 07:53:09,288 INFO L226 Difference]: Without dead ends: 2642 [2020-09-25 07:53:09,297 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 07:53:09,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2020-09-25 07:53:09,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 2466. [2020-09-25 07:53:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2466 states. [2020-09-25 07:53:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3104 transitions. [2020-09-25 07:53:09,398 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3104 transitions. Word has length 147 [2020-09-25 07:53:09,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:53:09,398 INFO L479 AbstractCegarLoop]: Abstraction has 2466 states and 3104 transitions. [2020-09-25 07:53:09,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 07:53:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3104 transitions. [2020-09-25 07:53:09,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 07:53:09,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:53:09,412 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 07:53:09,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:53:09,413 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:53:09,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:53:09,413 INFO L82 PathProgramCache]: Analyzing trace with hash -588171755, now seen corresponding path program 1 times [2020-09-25 07:53:09,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:53:09,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57150234] [2020-09-25 07:53:09,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:53:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:09,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:09,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:11,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 07:53:11,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 07:53:11,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1761 [2020-09-25 07:53:11,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:11,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:11,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:11,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 07:53:11,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 07:53:11,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:11,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:53:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:11,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:11,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:53:11,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:11,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:53:11,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:11,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:11,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:53:11,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:11,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:53:11,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:11,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 07:53:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:11,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:11,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:53:11,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:11,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:53:11,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:11,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:53:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:53:11,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 07:53:11,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:53:11,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 07:53:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:53:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:53:11,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:53:11,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 07:53:11,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:53:11,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-09-25 07:53:11,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:53:11,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:53:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:53:11,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:53:11,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 07:53:11,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:53:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:53:11,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57150234] [2020-09-25 07:53:11,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:53:11,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 07:53:11,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264899301] [2020-09-25 07:53:11,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:53:11,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:53:11,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:53:11,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:53:11,625 INFO L87 Difference]: Start difference. First operand 2466 states and 3104 transitions. Second operand 7 states.