/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_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:14:43,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:14:43,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:14:43,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:14:43,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:14:43,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:14:43,185 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:14:43,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:14:43,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:14:43,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:14:43,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:14:43,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:14:43,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:14:43,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:14:43,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:14:43,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:14:43,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:14:43,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:14:43,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:14:43,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:14:43,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:14:43,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:14:43,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:14:43,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:14:43,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:14:43,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:14:43,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:14:43,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:14:43,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:14:43,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:14:43,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:14:43,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:14:43,250 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:14:43,251 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:14:43,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:14:43,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:14:43,254 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:14:43,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:14:43,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:14:43,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:14:43,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:14:43,260 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 12:14:43,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:14:43,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:14:43,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:14:43,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:14:43,307 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:14:43,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:14:43,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:14:43,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:14:43,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:14:43,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:14:43,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:14:43,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:14:43,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:14:43,309 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:14:43,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:14:43,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:14:43,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:14:43,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:14:43,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:14:43,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:14:43,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:14:43,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:14:43,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:14:43,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:14:43,311 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:14:43,311 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:14:43,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:14:43,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:14:43,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:14:43,314 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 12:14:43,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:14:43,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:14:43,859 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:14:43,860 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:14:43,861 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:14:43,862 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-2.c [2020-09-25 12:14:43,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/494464099/23efc000496c46d2a4a36de024f2ba9e/FLAGcc24d55c2 [2020-09-25 12:14:44,461 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:14:44,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_10-2.c [2020-09-25 12:14:44,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/494464099/23efc000496c46d2a4a36de024f2ba9e/FLAGcc24d55c2 [2020-09-25 12:14:44,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/494464099/23efc000496c46d2a4a36de024f2ba9e [2020-09-25 12:14:44,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:14:44,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:14:44,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:14:44,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:14:44,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:14:44,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:14:44" (1/1) ... [2020-09-25 12:14:44,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cdd711c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:44, skipping insertion in model container [2020-09-25 12:14:44,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:14:44" (1/1) ... [2020-09-25 12:14:44,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:14:44,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:14:45,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:14:45,101 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:14:45,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:14:45,152 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:14:45,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:45 WrapperNode [2020-09-25 12:14:45,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:14:45,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:14:45,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:14:45,154 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:14:45,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:45" (1/1) ... [2020-09-25 12:14:45,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:45" (1/1) ... [2020-09-25 12:14:45,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:45" (1/1) ... [2020-09-25 12:14:45,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:45" (1/1) ... [2020-09-25 12:14:45,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:45" (1/1) ... [2020-09-25 12:14:45,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:45" (1/1) ... [2020-09-25 12:14:45,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:45" (1/1) ... [2020-09-25 12:14:45,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:14:45,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:14:45,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:14:45,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:14:45,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:45" (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 12:14:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:14:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:14:45,336 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 12:14:45,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 12:14:45,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:14:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:14:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:14:45,337 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 12:14:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 12:14:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:14:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:14:45,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:14:45,566 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:14:45,566 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:14:45,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:14:45 BoogieIcfgContainer [2020-09-25 12:14:45,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:14:45,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:14:45,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:14:45,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:14:45,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:14:44" (1/3) ... [2020-09-25 12:14:45,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae71ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:14:45, skipping insertion in model container [2020-09-25 12:14:45,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:45" (2/3) ... [2020-09-25 12:14:45,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ae71ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:14:45, skipping insertion in model container [2020-09-25 12:14:45,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:14:45" (3/3) ... [2020-09-25 12:14:45,580 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-2.c [2020-09-25 12:14:45,592 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:14:45,601 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:14:45,624 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:14:45,655 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:14:45,655 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:14:45,655 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:14:45,655 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:14:45,655 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:14:45,656 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:14:45,656 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:14:45,656 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:14:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 12:14:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:14:45,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:45,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:45,689 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:45,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:45,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 12:14:45,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:45,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986639159] [2020-09-25 12:14:45,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:45,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:46,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:46,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:46,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 12:14:46,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:46,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:46,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:46,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:14:46,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:46,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:14:46,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:46,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:46,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:46,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:46,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:46,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:46,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:46,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:46,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:46,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:46,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:14:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:46,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:46,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:46,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:46,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:14:46,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:46,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:14:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:46,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:14:46,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:46,171 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 12:14:46,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986639159] [2020-09-25 12:14:46,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:14:46,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:14:46,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292675686] [2020-09-25 12:14:46,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:14:46,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:46,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:14:46,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:14:46,209 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 12:14:46,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:46,327 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 12:14:46,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:14:46,329 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:14:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:46,343 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:14:46,344 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:14:46,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 12:14:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:14:46,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 12:14:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:14:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:14:46,405 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 12:14:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:46,406 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:14:46,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:14:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:14:46,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 12:14:46,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:46,409 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 12:14:46,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:14:46,410 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:46,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:46,411 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 12:14:46,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:46,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1682929293] [2020-09-25 12:14:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:46,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:46,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:14:46,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:46,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 12:14:46,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:46,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:46,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:46,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:14:46,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:46,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:46,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:46,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:46,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:46,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:46,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:46,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:46,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:46,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:46,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:14:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:46,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:46,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:46,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:46,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 12:14:46,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:46,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:46,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:46,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:46,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:46,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:46,677 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 12:14:46,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1682929293] [2020-09-25 12:14:46,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:14:46,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:14:46,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552019962] [2020-09-25 12:14:46,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:14:46,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:46,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:14:46,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:14:46,682 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 12:14:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:46,744 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 12:14:46,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:14:46,745 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 12:14:46,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:46,747 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:14:46,747 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 12:14:46,748 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 12:14:46,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 12:14:46,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 12:14:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:14:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:14:46,759 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 12:14:46,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:46,759 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:14:46,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:14:46,760 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:14:46,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:14:46,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:46,762 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 12:14:46,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:14:46,762 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:46,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:46,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 12:14:46,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:46,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341805056] [2020-09-25 12:14:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:46,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:47,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:48,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 12:14:48,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:14:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1892 [2020-09-25 12:14:48,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:48,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:48,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:48,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:14:48,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:14:48,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:48,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:48,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:48,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:48,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:48,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:48,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:48,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:48,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:48,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:48,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:48,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:14:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:48,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:48,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:14:48,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 12:14:48,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:48,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:14:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:48,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:48,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:48,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:48,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:14:48,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:48,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:48,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:48,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:14:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:48,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:48,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:48,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:48,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:48,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:14:48,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:48,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:14:49,032 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 12:14:49,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341805056] [2020-09-25 12:14:49,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:14:49,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:14:49,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401538728] [2020-09-25 12:14:49,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:14:49,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:49,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:14:49,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:14:49,039 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 12:14:49,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:49,203 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 12:14:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:14:49,205 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 12:14:49,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:49,209 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:14:49,209 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 12:14:49,210 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 12:14:49,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 12:14:49,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 12:14:49,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:14:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:14:49,225 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 12:14:49,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:49,226 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:14:49,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:14:49,226 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:14:49,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 12:14:49,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:49,229 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 12:14:49,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:14:49,229 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:49,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:49,230 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 12:14:49,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:49,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377987823] [2020-09-25 12:14:49,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:49,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:49,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:49,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:50,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:50,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:14:50,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:14:50,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1707 [2020-09-25 12:14:50,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:50,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:50,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:50,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:14:50,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:14:50,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:50,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:50,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:50,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:50,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:50,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:50,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:14:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:51,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:14:51,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:14:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-09-25 12:14:51,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:51,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:51,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:51,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:14:51,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:51,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:51,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:51,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:51,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:51,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:14:51,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:51,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:51,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:51,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:51,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:51,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:14:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:51,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:51,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:51,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:14:51,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:51,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:51,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:51,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:14:51,596 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 12:14:51,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377987823] [2020-09-25 12:14:51,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:51,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:14:51,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648445572] [2020-09-25 12:14:51,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:14:51,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:51,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:14:51,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:14:51,607 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 12:14:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:51,770 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 12:14:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:14:51,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 12:14:51,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:51,774 INFO L225 Difference]: With dead ends: 72 [2020-09-25 12:14:51,776 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:14:51,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:14:51,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:14:51,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 12:14:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 12:14:51,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 12:14:51,803 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 12:14:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:51,803 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 12:14:51,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:14:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 12:14:51,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:14:51,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:51,806 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 12:14:51,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:14:51,807 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:51,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:51,807 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 12:14:51,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:51,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867912797] [2020-09-25 12:14:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:51,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:52,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:56,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:56,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:14:56,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:14:56,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:14:56,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:56,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:56,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:14:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:14:56,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:56,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:56,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:56,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:56,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:56,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:56,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:56,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:56,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:56,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:56,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:56,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:14:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:56,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:56,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:56,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:56,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:57,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:57,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:59,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:14:59,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:14:59,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2368 [2020-09-25 12:14:59,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:59,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:59,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:14:59,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:59,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:59,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:59,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:14:59,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:59,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 12:14:59,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:59,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:59,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:59,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:14:59,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:59,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:59,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:59,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:59,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:59,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:14:59,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:59,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:59,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:59,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:59,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:59,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:14:59,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:14:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:59,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:59,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:59,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:59,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:14:59,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:59,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:59,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:59,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:59,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:14:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:59,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:59,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:59,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:59,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:14:59,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:59,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:59,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:59,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:59,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:59,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:59,463 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 12:14:59,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867912797] [2020-09-25 12:14:59,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:59,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:14:59,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448798618] [2020-09-25 12:14:59,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:14:59,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:59,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:14:59,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:14:59,467 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 12:14:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:59,664 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 12:14:59,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:14:59,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 12:14:59,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:59,671 INFO L225 Difference]: With dead ends: 72 [2020-09-25 12:14:59,671 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:14:59,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:14:59,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:14:59,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 50. [2020-09-25 12:14:59,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:14:59,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:14:59,697 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 12:14:59,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:59,698 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:14:59,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:14:59,698 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:14:59,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 12:14:59,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:59,709 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 12:14:59,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:14:59,709 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:59,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:59,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 12:14:59,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:59,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93634239] [2020-09-25 12:14:59,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:59,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:00,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:00,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:00,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:00,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:00,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:04,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:15:04,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:15:04,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:15:04,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:04,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:04,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 12:15:04,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:04,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:04,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:04,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:04,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:04,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:04,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:04,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:04,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:04,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:04,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:04,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:04,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:04,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:04,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:06,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:09,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:09,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:15:09,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:15:09,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:15:09,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:09,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:15:09,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:15:09,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:09,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:09,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:09,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:09,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:09,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:09,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 12:15:09,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:09,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:09,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:15:09,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:09,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:09,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:09,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:09,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:09,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:09,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:15:09,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:09,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:09,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:09,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:09,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:09,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:09,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:09,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:09,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:09,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:15:09,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:09,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:09,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:09,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:09,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:15:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:09,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:09,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:09,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:09,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:09,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 12:15:09,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:09,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:09,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:09,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:10,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:10,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:10,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:10,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:10,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:15:10,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:10,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:10,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:10,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:10,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:10,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:10,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:10,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:10,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:15:10,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:10,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:10,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:10,081 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 12:15:10,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93634239] [2020-09-25 12:15:10,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:10,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:15:10,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853586421] [2020-09-25 12:15:10,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:15:10,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:10,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:15:10,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:15:10,085 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 10 states. [2020-09-25 12:15:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:10,335 INFO L93 Difference]: Finished difference Result 119 states and 159 transitions. [2020-09-25 12:15:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:15:10,336 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 12:15:10,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:10,338 INFO L225 Difference]: With dead ends: 119 [2020-09-25 12:15:10,338 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 12:15:10,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:15:10,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 12:15:10,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-09-25 12:15:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 12:15:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2020-09-25 12:15:10,365 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 67 [2020-09-25 12:15:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:10,366 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2020-09-25 12:15:10,366 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:15:10,366 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2020-09-25 12:15:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 12:15:10,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:10,369 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 12:15:10,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:15:10,373 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:10,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:10,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1454118782, now seen corresponding path program 1 times [2020-09-25 12:15:10,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:10,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175701716] [2020-09-25 12:15:10,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:10,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:11,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:12,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:12,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:14,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:15,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 12:15:15,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:15:15,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:15:15,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:15,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:15,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:15,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:15,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 12:15:15,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:15,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:15,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:15,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:15,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:15,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:15,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:15,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:15,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:15,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:15,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:15,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:15,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:15,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:16,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:17,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:20,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:20,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:15:20,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:15:20,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:15:20,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:20,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:15:20,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:15:20,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:20,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:20,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:20,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:20,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:20,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:20,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:15:20,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-09-25 12:15:20,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:20,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:20,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:15:20,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:20,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:20,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:20,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:20,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:20,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:20,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:15:20,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:20,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:20,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:20,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:20,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:20,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:20,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:20,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:20,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:15:20,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:20,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:20,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:20,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:20,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:15:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:20,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:21,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:21,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:21,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [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 12:15:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:21,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:21,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:21,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:21,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:21,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:15:21,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:21,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:21,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:21,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:21,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:21,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:21,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:21,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:15:21,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:21,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:21,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 12:15:21,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175701716] [2020-09-25 12:15:21,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:21,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:15:21,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858040996] [2020-09-25 12:15:21,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:15:21,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:21,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:15:21,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:15:21,152 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 10 states. [2020-09-25 12:15:21,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:21,394 INFO L93 Difference]: Finished difference Result 144 states and 192 transitions. [2020-09-25 12:15:21,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:15:21,395 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-09-25 12:15:21,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:21,398 INFO L225 Difference]: With dead ends: 144 [2020-09-25 12:15:21,398 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 12:15:21,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:15:21,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 12:15:21,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-09-25 12:15:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 12:15:21,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 104 transitions. [2020-09-25 12:15:21,428 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 104 transitions. Word has length 68 [2020-09-25 12:15:21,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:21,428 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 104 transitions. [2020-09-25 12:15:21,428 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:15:21,429 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 104 transitions. [2020-09-25 12:15:21,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 12:15:21,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:21,433 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:21,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:15:21,434 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:21,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:21,434 INFO L82 PathProgramCache]: Analyzing trace with hash -659479355, now seen corresponding path program 1 times [2020-09-25 12:15:21,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:21,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1580637986] [2020-09-25 12:15:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:21,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:21,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:21,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:22,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:23,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 12:15:26,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:15:26,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:15:26,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 12:15:26,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:26,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:26,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:26,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:26,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:26,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:26,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:26,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:26,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:26,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:26,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:26,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:26,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:27,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:28,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:31,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 12:15:31,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 12:15:31,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:15:31,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:31,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:31,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:15:31,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:15:31,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:15:31,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:31,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:31,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:31,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:32,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:15:32,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:15:32,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-09-25 12:15:32,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:32,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:32,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:32,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:15:32,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:32,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:32,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:32,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:32,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 12:15:32,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:32,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:32,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:32,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:32,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:32,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:32,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:32,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:32,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:32,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:32,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:15:32,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:32,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:32,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:32,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:32,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:32,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:32,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:32,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:32,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:32,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:32,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:32,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:32,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:15:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:32,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:32,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:32,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:15:32,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:32,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:32,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 12:15:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:32,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:32,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:32,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 12:15:32,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:32,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:32,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:32,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:32,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:32,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:32,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:32,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:32,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:15:32,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:32,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:32,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:32,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:32,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:32,713 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 10 [2020-09-25 12:15:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:32,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:32,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:32,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:32,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:32,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:15:32,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:32,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:32,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:32,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 30 proven. 19 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 12:15:32,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1580637986] [2020-09-25 12:15:32,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:32,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:15:32,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936040916] [2020-09-25 12:15:32,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:15:32,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:32,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:15:32,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:15:32,738 INFO L87 Difference]: Start difference. First operand 84 states and 104 transitions. Second operand 11 states. [2020-09-25 12:15:33,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:33,157 INFO L93 Difference]: Finished difference Result 213 states and 316 transitions. [2020-09-25 12:15:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:15:33,157 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-09-25 12:15:33,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:33,159 INFO L225 Difference]: With dead ends: 213 [2020-09-25 12:15:33,159 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 12:15:33,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:15:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 12:15:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-09-25 12:15:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 12:15:33,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-09-25 12:15:33,181 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 84 [2020-09-25 12:15:33,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:33,182 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-09-25 12:15:33,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:15:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-09-25 12:15:33,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 12:15:33,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:33,188 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:33,188 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:15:33,189 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:33,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:33,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 12:15:33,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:33,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1966247044] [2020-09-25 12:15:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:33,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:33,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:33,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:33,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:33,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:33,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:33,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:34,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:34,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:34,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:34,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:34,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:34,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:35,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:35,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:35,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:36,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:36,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:38,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 12:15:38,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 12:15:38,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:15:38,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:38,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:15:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:15:38,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 12:15:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:38,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:38,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:38,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:38,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:38,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:38,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:38,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:38,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:15:38,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:38,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking...