/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=0.6 --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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:47:09,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:47:09,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:47:09,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:47:09,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:47:09,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:47:09,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:47:09,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:47:09,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:47:09,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:47:09,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:47:09,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:47:09,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:47:09,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:47:09,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:47:09,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:47:09,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:47:09,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:47:09,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:47:09,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:47:09,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:47:09,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:47:09,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:47:09,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:47:09,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:47:09,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:47:09,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:47:09,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:47:09,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:47:09,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:47:09,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:47:09,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:47:09,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:47:09,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:47:09,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:47:09,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:47:09,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:47:09,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:47:09,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:47:09,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:47:09,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:47:09,307 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 06:47:09,355 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:47:09,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:47:09,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:47:09,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:47:09,358 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:47:09,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:47:09,359 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:47:09,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:47:09,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:47:09,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:47:09,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:47:09,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:47:09,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:47:09,361 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:47:09,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:47:09,362 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:47:09,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:47:09,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:47:09,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:47:09,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:47:09,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:47:09,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:47:09,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:47:09,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:47:09,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:47:09,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:47:09,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:47:09,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:47:09,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:47:09,364 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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-09-25 06:47:09,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:47:09,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:47:09,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:47:09,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:47:09,839 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:47:09,840 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 06:47:09,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b054b1ba/3448e4a8c2814989b9b995185edba497/FLAGa4ed0a445 [2020-09-25 06:47:10,614 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:47:10,615 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 06:47:10,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b054b1ba/3448e4a8c2814989b9b995185edba497/FLAGa4ed0a445 [2020-09-25 06:47:10,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b054b1ba/3448e4a8c2814989b9b995185edba497 [2020-09-25 06:47:10,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:47:10,862 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:47:10,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:10,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:47:10,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:47:10,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:10" (1/1) ... [2020-09-25 06:47:10,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:10, skipping insertion in model container [2020-09-25 06:47:10,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:47:10" (1/1) ... [2020-09-25 06:47:10,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:47:10,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:47:11,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:11,431 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:47:11,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:47:11,715 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:47:11,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:11 WrapperNode [2020-09-25 06:47:11,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:47:11,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:47:11,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:47:11,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:47:11,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:11" (1/1) ... [2020-09-25 06:47:11,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:11" (1/1) ... [2020-09-25 06:47:11,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:11" (1/1) ... [2020-09-25 06:47:11,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:11" (1/1) ... [2020-09-25 06:47:11,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:11" (1/1) ... [2020-09-25 06:47:11,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:11" (1/1) ... [2020-09-25 06:47:11,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:11" (1/1) ... [2020-09-25 06:47:11,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:47:11,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:47:11,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:47:11,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:47:11,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:11" (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 06:47:11,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:47:11,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:47:11,923 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:47:11,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:47:11,923 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:47:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:47:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:47:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:47:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:47:11,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:47:11,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:47:13,406 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:47:13,406 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:47:13,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:13 BoogieIcfgContainer [2020-09-25 06:47:13,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:47:13,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:47:13,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:47:13,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:47:13,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:47:10" (1/3) ... [2020-09-25 06:47:13,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:13, skipping insertion in model container [2020-09-25 06:47:13,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:47:11" (2/3) ... [2020-09-25 06:47:13,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:47:13, skipping insertion in model container [2020-09-25 06:47:13,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:47:13" (3/3) ... [2020-09-25 06:47:13,427 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2020-09-25 06:47:13,439 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:47:13,451 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:47:13,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:47:13,510 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:47:13,510 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:47:13,510 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:47:13,510 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:47:13,511 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:47:13,511 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:47:13,511 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:47:13,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:47:13,543 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 06:47:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 06:47:13,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:13,555 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] [2020-09-25 06:47:13,556 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:13,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:13,564 INFO L82 PathProgramCache]: Analyzing trace with hash -796596049, now seen corresponding path program 1 times [2020-09-25 06:47:13,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:13,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955057888] [2020-09-25 06:47:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:13,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:14,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 06:47:14,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:47:14,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-09-25 06:47:14,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:14,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:14,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 06:47:14,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 06:47:14,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 06:47:14,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:14,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:14,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:14,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:14,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:14,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:47:14,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:14,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:14,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:14,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:47:14,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:14,633 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 06:47:14,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955057888] [2020-09-25 06:47:14,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:14,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:47:14,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944901132] [2020-09-25 06:47:14,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:47:14,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:14,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:47:14,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:47:14,691 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 06:47:16,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:16,855 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 06:47:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:47:16,860 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-25 06:47:16,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:16,883 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 06:47:16,884 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 06:47:16,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:16,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 06:47:17,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 06:47:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 06:47:17,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 06:47:17,020 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 49 [2020-09-25 06:47:17,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:17,021 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 06:47:17,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:47:17,022 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 06:47:17,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 06:47:17,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:17,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:17,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:47:17,030 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:17,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:17,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1427265920, now seen corresponding path program 1 times [2020-09-25 06:47:17,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:17,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301726550] [2020-09-25 06:47:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:17,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:17,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:22,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 06:47:22,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:47:22,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 06:47:22,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:22,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 06:47:22,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 06:47:22,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:22,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:22,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:22,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:22,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:47:22,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:22,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:22,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:22,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:22,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:22,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:22,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:22,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:22,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:22,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 06:47:22,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:22,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:22,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:22,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 06:47:22,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:22,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301726550] [2020-09-25 06:47:22,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:22,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:47:22,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030375211] [2020-09-25 06:47:22,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:47:22,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:22,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:47:22,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:22,391 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 06:47:24,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:24,111 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 06:47:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:47:24,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-25 06:47:24,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:24,121 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 06:47:24,121 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 06:47:24,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:24,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 06:47:24,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 06:47:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 06:47:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 06:47:24,191 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 128 [2020-09-25 06:47:24,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:24,194 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 06:47:24,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:47:24,195 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 06:47:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 06:47:24,210 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:24,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:24,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:47:24,211 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:24,211 INFO L82 PathProgramCache]: Analyzing trace with hash -863517790, now seen corresponding path program 1 times [2020-09-25 06:47:24,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:24,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600591096] [2020-09-25 06:47:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:24,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:24,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:24,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:24,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:28,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:29,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:29,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 06:47:29,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:47:29,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 06:47:29,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:29,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 06:47:29,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 06:47:29,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 06:47:29,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:29,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:29,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:29,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:29,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:29,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:29,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:47:29,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:29,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:29,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:29,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:29,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:29,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:29,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:29,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:29,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:29,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 06:47:29,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:29,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:47:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:29,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:47:29,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:29,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600591096] [2020-09-25 06:47:29,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:29,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 06:47:29,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190496453] [2020-09-25 06:47:29,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 06:47:29,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:29,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 06:47:29,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:29,555 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 6 states. [2020-09-25 06:47:32,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:32,507 INFO L93 Difference]: Finished difference Result 1905 states and 2481 transitions. [2020-09-25 06:47:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 06:47:32,508 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-09-25 06:47:32,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:32,519 INFO L225 Difference]: With dead ends: 1905 [2020-09-25 06:47:32,520 INFO L226 Difference]: Without dead ends: 1375 [2020-09-25 06:47:32,522 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 06:47:32,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-09-25 06:47:32,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1319. [2020-09-25 06:47:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1319 states. [2020-09-25 06:47:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1696 transitions. [2020-09-25 06:47:32,586 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1696 transitions. Word has length 138 [2020-09-25 06:47:32,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:32,588 INFO L479 AbstractCegarLoop]: Abstraction has 1319 states and 1696 transitions. [2020-09-25 06:47:32,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 06:47:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1696 transitions. [2020-09-25 06:47:32,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 06:47:32,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:32,596 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:32,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:47:32,597 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:32,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:32,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1456961498, now seen corresponding path program 1 times [2020-09-25 06:47:32,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:32,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140340853] [2020-09-25 06:47:32,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:32,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:32,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:32,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:32,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:33,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:35,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:35,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 06:47:35,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:47:35,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2452 [2020-09-25 06:47:35,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:35,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:35,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:35,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 06:47:35,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:47:35,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:35,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:35,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:35,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:35,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:35,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:35,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 06:47:35,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:35,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:35,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:35,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:47:35,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:35,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:35,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:35,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:35,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 06:47:35,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:35,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 06:47:35,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:35,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:35,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:35,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:35,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 06:47:35,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:47:35,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140340853] [2020-09-25 06:47:35,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:35,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:47:35,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215606590] [2020-09-25 06:47:35,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:35,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:35,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:35,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:35,486 INFO L87 Difference]: Start difference. First operand 1319 states and 1696 transitions. Second operand 7 states. [2020-09-25 06:47:37,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:37,815 INFO L93 Difference]: Finished difference Result 3325 states and 4502 transitions. [2020-09-25 06:47:37,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:37,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 140 [2020-09-25 06:47:37,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:37,831 INFO L225 Difference]: With dead ends: 3325 [2020-09-25 06:47:37,832 INFO L226 Difference]: Without dead ends: 2171 [2020-09-25 06:47:37,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:37,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2171 states. [2020-09-25 06:47:37,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2171 to 1813. [2020-09-25 06:47:37,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2020-09-25 06:47:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2269 transitions. [2020-09-25 06:47:37,905 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2269 transitions. Word has length 140 [2020-09-25 06:47:37,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:37,905 INFO L479 AbstractCegarLoop]: Abstraction has 1813 states and 2269 transitions. [2020-09-25 06:47:37,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2269 transitions. [2020-09-25 06:47:37,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-09-25 06:47:37,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:37,910 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:47:37,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:47:37,911 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:37,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:37,911 INFO L82 PathProgramCache]: Analyzing trace with hash 275637238, now seen corresponding path program 1 times [2020-09-25 06:47:37,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:37,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913891550] [2020-09-25 06:47:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:37,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:38,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:40,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:40,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:40,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:41,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:41,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-09-25 06:47:41,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 06:47:41,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3559 [2020-09-25 06:47:41,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:41,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:41,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:47:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 06:47:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 06:47:41,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:41,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:41,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:41,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:41,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:41,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:41,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 06:47:41,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:41,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:41,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:41,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:41,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:41,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:47:41,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:41,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:41,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:41,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 06:47:41,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:41,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 06:47:41,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:41,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:41,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:41,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 06:47:41,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:41,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 06:47:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:41,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:41,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:41,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 06:47:41,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:47:41,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 06:47:41,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:41,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:41,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:41,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:41,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 06:47:41,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:41,997 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 102 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 06:47:41,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913891550] [2020-09-25 06:47:41,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:41,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:41,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915416785] [2020-09-25 06:47:41,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:42,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:42,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:42,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:42,001 INFO L87 Difference]: Start difference. First operand 1813 states and 2269 transitions. Second operand 7 states. [2020-09-25 06:47:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:44,038 INFO L93 Difference]: Finished difference Result 4265 states and 5621 transitions. [2020-09-25 06:47:44,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:44,039 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-09-25 06:47:44,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:44,055 INFO L225 Difference]: With dead ends: 4265 [2020-09-25 06:47:44,055 INFO L226 Difference]: Without dead ends: 2617 [2020-09-25 06:47:44,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:44,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2020-09-25 06:47:44,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2287. [2020-09-25 06:47:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2287 states. [2020-09-25 06:47:44,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 2810 transitions. [2020-09-25 06:47:44,138 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 2810 transitions. Word has length 208 [2020-09-25 06:47:44,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:44,139 INFO L479 AbstractCegarLoop]: Abstraction has 2287 states and 2810 transitions. [2020-09-25 06:47:44,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 2810 transitions. [2020-09-25 06:47:44,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 06:47:44,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:44,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:47:44,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:44,145 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:44,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:44,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1168446283, now seen corresponding path program 1 times [2020-09-25 06:47:44,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:44,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282495001] [2020-09-25 06:47:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:44,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:46,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:48,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:49,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:49,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 06:47:49,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:47:49,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:47:49,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:49,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:49,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:49,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 06:47:49,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 06:47:49,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:49,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:49,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:49,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:49,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:49,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:49,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:47:49,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:49,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:49,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:49,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:49,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:49,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:49,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:49,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 06:47:49,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:49,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:49,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:47:49,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:49,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:49,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:49,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 06:47:49,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:49,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 06:47:49,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:49,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:49,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 06:47:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:49,652 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:49,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282495001] [2020-09-25 06:47:49,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:49,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:49,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618220763] [2020-09-25 06:47:49,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:49,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:49,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:49,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:49,656 INFO L87 Difference]: Start difference. First operand 2287 states and 2810 transitions. Second operand 7 states. [2020-09-25 06:47:51,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:51,933 INFO L93 Difference]: Finished difference Result 5052 states and 6521 transitions. [2020-09-25 06:47:51,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:47:51,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 230 [2020-09-25 06:47:51,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:51,953 INFO L225 Difference]: With dead ends: 5052 [2020-09-25 06:47:51,953 INFO L226 Difference]: Without dead ends: 2930 [2020-09-25 06:47:51,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:47:51,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2930 states. [2020-09-25 06:47:52,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2930 to 2740. [2020-09-25 06:47:52,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2740 states. [2020-09-25 06:47:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2740 states to 2740 states and 3342 transitions. [2020-09-25 06:47:52,069 INFO L78 Accepts]: Start accepts. Automaton has 2740 states and 3342 transitions. Word has length 230 [2020-09-25 06:47:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:52,070 INFO L479 AbstractCegarLoop]: Abstraction has 2740 states and 3342 transitions. [2020-09-25 06:47:52,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:47:52,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2740 states and 3342 transitions. [2020-09-25 06:47:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-25 06:47:52,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:52,083 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:52,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 06:47:52,083 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:52,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:52,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1838139866, now seen corresponding path program 1 times [2020-09-25 06:47:52,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:52,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841202513] [2020-09-25 06:47:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:52,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:52,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:52,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:53,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:53,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:57,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-09-25 06:47:57,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:47:57,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 06:47:57,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:57,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:57,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-09-25 06:47:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 06:47:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:57,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:57,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:57,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:47:57,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:57,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:47:57,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:57,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:57,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:57,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:57,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 06:47:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:57,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:57,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 06:47:57,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:57,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 06:47:57,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:57,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:57,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 06:47:57,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:57,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 06:47:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:57,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:57,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:57,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 06:47:57,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:57,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-09-25 06:47:57,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:57,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:57,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:47:57,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:47:57,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-25 06:47:57,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:57,769 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:47:57,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841202513] [2020-09-25 06:47:57,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:47:57,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:47:57,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933658557] [2020-09-25 06:47:57,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:47:57,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:57,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:47:57,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:47:57,771 INFO L87 Difference]: Start difference. First operand 2740 states and 3342 transitions. Second operand 7 states. [2020-09-25 06:48:00,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:48:00,319 INFO L93 Difference]: Finished difference Result 6327 states and 7989 transitions. [2020-09-25 06:48:00,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:48:00,320 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 275 [2020-09-25 06:48:00,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted.