/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:14:45,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:14:45,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:14:45,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:14:45,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:14:45,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:14:45,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:14:45,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:14:45,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:14:45,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:14:45,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:14:45,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:14:45,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:14:45,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:14:45,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:14:45,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:14:45,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:14:45,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:14:45,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:14:45,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:14:45,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:14:45,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:14:45,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:14:45,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:14:45,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:14:45,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:14:45,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:14:45,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:14:45,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:14:45,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:14:45,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:14:45,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:14:45,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:14:45,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:14:45,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:14:45,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:14:45,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:14:45,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:14:45,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:14:45,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:14:45,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:14:45,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:14:45,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:14:45,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:14:45,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:14:45,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:14:45,385 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:14:45,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:14:45,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:14:45,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:14:45,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:14:45,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:14:45,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:14:45,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:14:45,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:14:45,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:14:45,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:14:45,387 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:14:45,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:14:45,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:14:45,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:14:45,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:14:45,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:14:45,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:14:45,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:14:45,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:14:45,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:14:45,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:14:45,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:14:45,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:14:45,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:14:45,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:14:45,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:14:45,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:14:45,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:14:45,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:14:45,893 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:14:45,894 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c [2020-09-25 12:14:45,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5fcdfc183/bc46c9aeca564ecea1f090dd24f3b952/FLAG183cf0659 [2020-09-25 12:14:46,497 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:14:46,498 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c [2020-09-25 12:14:46,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5fcdfc183/bc46c9aeca564ecea1f090dd24f3b952/FLAG183cf0659 [2020-09-25 12:14:46,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5fcdfc183/bc46c9aeca564ecea1f090dd24f3b952 [2020-09-25 12:14:46,860 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:14:46,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:14:46,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:14:46,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:14:46,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:14:46,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:14:46" (1/1) ... [2020-09-25 12:14:46,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:46, skipping insertion in model container [2020-09-25 12:14:46,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:14:46" (1/1) ... [2020-09-25 12:14:46,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:14:46,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:14:47,130 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:14:47,135 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:14:47,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:14:47,174 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:14:47,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:47 WrapperNode [2020-09-25 12:14:47,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:14:47,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:14:47,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:14:47,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:14:47,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:47" (1/1) ... [2020-09-25 12:14:47,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:47" (1/1) ... [2020-09-25 12:14:47,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:47" (1/1) ... [2020-09-25 12:14:47,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:47" (1/1) ... [2020-09-25 12:14:47,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:47" (1/1) ... [2020-09-25 12:14:47,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:47" (1/1) ... [2020-09-25 12:14:47,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:47" (1/1) ... [2020-09-25 12:14:47,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:14:47,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:14:47,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:14:47,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:14:47,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:14:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:14:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:14:47,376 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 12:14:47,376 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 12:14:47,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:14:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:14:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:14:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 12:14:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 12:14:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:14:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:14:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:14:47,602 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:14:47,603 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:14:47,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:14:47 BoogieIcfgContainer [2020-09-25 12:14:47,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:14:47,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:14:47,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:14:47,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:14:47,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:14:46" (1/3) ... [2020-09-25 12:14:47,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:14:47, skipping insertion in model container [2020-09-25 12:14:47,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:47" (2/3) ... [2020-09-25 12:14:47,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:14:47, skipping insertion in model container [2020-09-25 12:14:47,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:14:47" (3/3) ... [2020-09-25 12:14:47,619 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-2.c [2020-09-25 12:14:47,631 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:14:47,642 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:14:47,670 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:14:47,726 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:14:47,726 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:14:47,727 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:14:47,727 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:14:47,727 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:14:47,727 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:14:47,727 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:14:47,727 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:14:47,753 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 12:14:47,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:14:47,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:47,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:47,766 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:47,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:47,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 12:14:47,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:47,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932208191] [2020-09-25 12:14:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:47,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:47,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:47,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:47,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:47,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 12:14:47,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:47,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:14:47,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:14:47,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:14:48,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:48,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:48,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:48,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:48,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:48,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:48,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:14:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:48,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:48,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:48,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:48,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 12:14:48,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:48,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:48,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:48,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:48,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:14:48,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932208191] [2020-09-25 12:14:48,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:14:48,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:14:48,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136260031] [2020-09-25 12:14:48,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:14:48,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:48,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:14:48,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:14:48,155 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 12:14:48,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:48,285 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 12:14:48,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:14:48,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:14:48,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:48,299 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:14:48,300 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:14:48,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:14:48,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:14:48,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 12:14:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:14:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:14:48,361 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 12:14:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:48,362 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:14:48,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:14:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:14:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 12:14:48,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:48,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:48,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:14:48,366 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:48,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:48,367 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 12:14:48,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:48,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905521492] [2020-09-25 12:14:48,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:48,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:48,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:14:48,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:48,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 12:14:48,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:48,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:14:48,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:48,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:48,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:48,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:48,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:48,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:48,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:48,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:48,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:48,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:48,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:14:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:48,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:48,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:48,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:14:48,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:48,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:48,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:14:48,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905521492] [2020-09-25 12:14:48,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:14:48,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:14:48,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539859680] [2020-09-25 12:14:48,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:14:48,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:48,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:14:48,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:14:48,577 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 12:14:48,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:48,666 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 12:14:48,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:14:48,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 12:14:48,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:48,669 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:14:48,669 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 12:14:48,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:14:48,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 12:14:48,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 12:14:48,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:14:48,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:14:48,681 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 12:14:48,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:48,681 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:14:48,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:14:48,682 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:14:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:14:48,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:48,684 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:14:48,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:14:48,684 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:48,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:48,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 12:14:48,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:48,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89647888] [2020-09-25 12:14:48,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:49,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:49,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 12:14:49,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:49,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-09-25 12:14:49,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:49,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:49,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:14:49,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:14:49,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:14:49,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:49,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:49,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:49,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:49,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:49,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:14:49,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:49,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:49,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:49,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:49,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:14:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:49,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:49,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:49,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:49,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:14:49,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:49,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 12:14:49,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:49,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:49,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:49,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:49,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:14:49,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:49,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:49,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:49,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:49,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:49,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:14:49,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:49,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:49,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:49,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:49,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:49,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:49,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:14:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:49,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:49,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:49,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:49,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:49,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:14:49,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:49,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:49,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:49,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:49,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:14:49,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89647888] [2020-09-25 12:14:49,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:14:49,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:14:49,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967274364] [2020-09-25 12:14:49,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:14:49,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:49,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:14:49,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:14:49,768 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 12:14:49,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:49,894 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 12:14:49,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:14:49,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 12:14:49,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:49,898 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:14:49,898 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 12:14:49,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:14:49,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 12:14:49,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 12:14:49,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:14:49,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:14:49,910 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 12:14:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:49,911 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:14:49,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:14:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:14:49,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 12:14:49,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:49,914 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:14:49,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:14:49,914 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:49,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:49,915 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 12:14:49,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:49,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359290847] [2020-09-25 12:14:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:49,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:49,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:50,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:50,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:50,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:14:50,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:14:50,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-25 12:14:50,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:50,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:14:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:14:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:50,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:50,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:50,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:50,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:50,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:50,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:50,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:50,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:50,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:50,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:50,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:50,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:50,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:14:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:50,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:50,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:50,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:51,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:14:51,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:14:51,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-25 12:14:51,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:51,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:51,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:51,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:51,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:14:51,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:51,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:51,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:51,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:51,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 12:14:51,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:51,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:51,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:14:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:51,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:51,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:51,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:51,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:14:51,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:51,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:14:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:14:51,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359290847] [2020-09-25 12:14:51,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:51,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:14:51,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571501301] [2020-09-25 12:14:51,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:14:51,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:51,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:14:51,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:14:51,148 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 12:14:51,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:51,298 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 12:14:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:14:51,301 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 12:14:51,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:51,304 INFO L225 Difference]: With dead ends: 110 [2020-09-25 12:14:51,305 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:14:51,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:14:51,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:14:51,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 12:14:51,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:14:51,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 12:14:51,332 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 12:14:51,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:51,333 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 12:14:51,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:14:51,336 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 12:14:51,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:14:51,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:51,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:51,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:14:51,347 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:51,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:51,347 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 12:14:51,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:51,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143814768] [2020-09-25 12:14:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:51,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:56,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:56,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:14:56,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:14:56,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:14:56,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:56,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:14:56,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:14:56,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:56,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:56,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:56,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:56,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:56,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:56,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:56,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:56,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:56,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:56,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:56,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:56,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:14:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:56,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:56,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:56,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:56,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:56,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:58,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:59,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:14:59,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:14:59,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3411 [2020-09-25 12:14:59,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:59,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:59,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:59,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:59,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:14:59,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:59,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:59,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:59,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:14:59,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:59,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 12:14:59,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:59,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:59,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:59,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:59,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:14:59,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:59,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:59,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:59,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:59,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:59,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:59,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:59,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:59,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:14:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:59,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:59,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:59,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:59,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:14:59,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:59,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:59,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:59,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:59,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:59,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:59,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:14:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:59,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:59,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:59,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:59,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:14:59,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:59,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:59,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:59,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:15:00,004 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:15:00,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143814768] [2020-09-25 12:15:00,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:00,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:00,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478321553] [2020-09-25 12:15:00,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:00,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:00,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:00,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:00,007 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 12:15:00,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:00,150 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2020-09-25 12:15:00,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:00,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 12:15:00,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:00,153 INFO L225 Difference]: With dead ends: 66 [2020-09-25 12:15:00,153 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 12:15:00,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 12:15:00,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 12:15:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:15:00,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 12:15:00,174 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 12:15:00,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:00,177 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 12:15:00,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:00,177 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 12:15:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 12:15:00,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:00,185 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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] [2020-09-25 12:15:00,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:15:00,186 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:00,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:00,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 12:15:00,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:00,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881757733] [2020-09-25 12:15:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:00,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:00,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:00,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:00,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:00,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:00,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:01,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:05,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:15:05,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:15:05,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 12:15:05,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:05,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:05,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:15:05,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:05,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:05,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:05,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:05,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:05,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:05,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:05,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:05,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:05,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:05,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:10,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:15:10,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:15:10,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:15:10,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:10,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:15:10,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:15:10,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:10,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:10,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:10,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:10,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:10,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 12:15:10,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:10,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:10,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:10,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:15:10,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:10,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:10,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:10,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:10,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:10,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:15:10,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:10,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:10,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:10,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:10,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:10,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:10,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:10,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:10,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:15:10,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:10,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:10,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:10,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:10,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:10,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:15:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:10,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:10,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:10,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:10,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 12:15:10,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:10,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:10,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:10,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:10,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:10,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:10,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:10,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:10,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:10,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:15:10,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:10,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:10,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:10,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:10,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:10,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:10,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:10,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:10,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:15:10,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:10,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:10,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 12:15:10,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881757733] [2020-09-25 12:15:10,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:10,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:15:10,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729771153] [2020-09-25 12:15:10,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:15:10,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:10,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:15:10,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:15:10,616 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 10 states. [2020-09-25 12:15:10,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:10,943 INFO L93 Difference]: Finished difference Result 125 states and 171 transitions. [2020-09-25 12:15:10,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:15:10,944 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 12:15:10,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:10,946 INFO L225 Difference]: With dead ends: 125 [2020-09-25 12:15:10,947 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 12:15:10,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:15:10,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 12:15:10,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-09-25 12:15:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 12:15:10,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2020-09-25 12:15:10,974 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 67 [2020-09-25 12:15:10,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:10,977 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2020-09-25 12:15:10,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:15:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2020-09-25 12:15:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 12:15:10,978 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:10,979 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 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] [2020-09-25 12:15:10,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:15:10,979 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:10,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:10,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1454118782, now seen corresponding path program 1 times [2020-09-25 12:15:10,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:10,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993770680] [2020-09-25 12:15:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:10,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:12,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:12,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:15,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 12:15:15,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 12:15:15,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:15:15,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:15,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:15,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:15,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:15,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 12:15:15,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:16,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:16,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:16,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:16,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:16,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:16,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:16,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:16,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:16,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:16,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:19,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:20,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:21,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:15:21,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:15:21,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:15:21,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:21,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:21,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:21,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:21,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:15:21,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:21,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:15:21,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:21,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 12:15:21,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:21,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:15:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:21,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:15:21,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:21,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:21,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:21,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:21,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:15:21,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:21,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:21,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:21,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:21,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:21,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:21,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:21,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:21,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:15:21,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:21,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:21,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:21,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:21,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:21,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:21,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:15:21,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:21,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:21,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:21,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:21,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 12:15:21,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:21,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:21,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:21,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:21,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:21,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:21,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:21,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:21,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:21,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:21,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:21,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:21,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:21,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:21,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:21,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:21,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:21,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:21,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:21,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:21,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:21,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:21,467 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 12:15:21,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993770680] [2020-09-25 12:15:21,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:21,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:15:21,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849556207] [2020-09-25 12:15:21,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:15:21,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:21,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:15:21,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:21,470 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 9 states. [2020-09-25 12:15:21,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:21,650 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2020-09-25 12:15:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:15:21,651 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-09-25 12:15:21,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:21,652 INFO L225 Difference]: With dead ends: 86 [2020-09-25 12:15:21,653 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 12:15:21,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:15:21,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 12:15:21,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2020-09-25 12:15:21,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-25 12:15:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 89 transitions. [2020-09-25 12:15:21,664 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 89 transitions. Word has length 68 [2020-09-25 12:15:21,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:21,665 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 89 transitions. [2020-09-25 12:15:21,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:15:21,665 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 89 transitions. [2020-09-25 12:15:21,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 12:15:21,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:21,666 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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] [2020-09-25 12:15:21,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:15:21,667 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:21,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:21,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 12:15:21,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:21,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613557845] [2020-09-25 12:15:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:21,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:24,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:25,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:15:26,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 12:15:26,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:15:26,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:26,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:15:26,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:26,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:26,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:26,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:26,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:26,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:26,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:26,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:26,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:26,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:26,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:28,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:28,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:31,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:15:31,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 12:15:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:15:31,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:31,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:15:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:15:31,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 12:15:31,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:31,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:31,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:31,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:15:31,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:31,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 12:15:31,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:31,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:31,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:15:31,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:31,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:31,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:31,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:31,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:15:31,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:31,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:31,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:31,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:31,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:31,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:31,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:31,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:31,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:15:31,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:31,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:31,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:31,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 12:15:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:31,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:32,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:15:32,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:15:32,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 641 [2020-09-25 12:15:32,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:32,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:32,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:32,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:32,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:15:32,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:32,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:32,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:32,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:32,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:15:32,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:32,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:32,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:32,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:32,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:32,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:32,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:32,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:32,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:15:32,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:32,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:32,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 12:15:32,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613557845] [2020-09-25 12:15:32,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:32,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:15:32,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352177680] [2020-09-25 12:15:32,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:15:32,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:32,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:15:32,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:15:32,763 INFO L87 Difference]: Start difference. First operand 72 states and 89 transitions. Second operand 11 states. [2020-09-25 12:15:33,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:33,161 INFO L93 Difference]: Finished difference Result 177 states and 259 transitions. [2020-09-25 12:15:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:15:33,163 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 12:15:33,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:33,166 INFO L225 Difference]: With dead ends: 177 [2020-09-25 12:15:33,166 INFO L226 Difference]: Without dead ends: 107 [2020-09-25 12:15:33,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:15:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-25 12:15:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2020-09-25 12:15:33,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 12:15:33,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 125 transitions. [2020-09-25 12:15:33,198 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 125 transitions. Word has length 71 [2020-09-25 12:15:33,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:33,198 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 125 transitions. [2020-09-25 12:15:33,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:15:33,199 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 125 transitions. [2020-09-25 12:15:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-09-25 12:15:33,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:33,201 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:15:33,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:15:33,202 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:33,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:33,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1768747964, now seen corresponding path program 1 times [2020-09-25 12:15:33,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:33,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260319418] [2020-09-25 12:15:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:33,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:33,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:33,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:33,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:33,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:33,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:38,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 12:15:38,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:15:38,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:15:38,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:38,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:38,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:38,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:38,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:15:38,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:38,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:38,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:38,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:38,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:38,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:38,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:38,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:38,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:38,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:38,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:38,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:38,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:38,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking...