/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=0.1 --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_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:00:31,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:00:31,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:00:31,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:00:31,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:00:31,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:00:31,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:00:31,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:00:31,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:00:31,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:00:31,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:00:31,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:00:31,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:00:31,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:00:31,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:00:31,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:00:31,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:00:31,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:00:31,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:00:31,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:00:31,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:00:31,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:00:31,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:00:31,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:00:31,313 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:00:31,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:00:31,314 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:00:31,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:00:31,315 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:00:31,316 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:00:31,316 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:00:31,317 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:00:31,318 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:00:31,319 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:00:31,320 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:00:31,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:00:31,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:00:31,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:00:31,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:00:31,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:00:31,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:00:31,325 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 10:00:31,351 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:00:31,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:00:31,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:00:31,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:00:31,353 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:00:31,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:00:31,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:00:31,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:00:31,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:00:31,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:00:31,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:00:31,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:00:31,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:00:31,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:00:31,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:00:31,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:00:31,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:00:31,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:00:31,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:00:31,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:00:31,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:00:31,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:00:31,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:00:31,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:00:31,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:00:31,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:00:31,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:00:31,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:00:31,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:00:31,358 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:00:31,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:00:31,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:00:31,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:00:31,832 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:00:31,833 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:00:31,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-09-25 10:00:31,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/602394e77/e081c7a3a25e40f98e8dcaff04399518/FLAGaa25e0382 [2020-09-25 10:00:32,408 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:00:32,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-09-25 10:00:32,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/602394e77/e081c7a3a25e40f98e8dcaff04399518/FLAGaa25e0382 [2020-09-25 10:00:32,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/602394e77/e081c7a3a25e40f98e8dcaff04399518 [2020-09-25 10:00:32,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:00:32,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:00:32,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:00:32,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:00:32,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:00:32,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:00:32" (1/1) ... [2020-09-25 10:00:32,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:32, skipping insertion in model container [2020-09-25 10:00:32,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:00:32" (1/1) ... [2020-09-25 10:00:32,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:00:32,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:00:33,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:00:33,067 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:00:33,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:00:33,109 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:00:33,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:33 WrapperNode [2020-09-25 10:00:33,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:00:33,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:00:33,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:00:33,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:00:33,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:33" (1/1) ... [2020-09-25 10:00:33,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:33" (1/1) ... [2020-09-25 10:00:33,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:33" (1/1) ... [2020-09-25 10:00:33,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:33" (1/1) ... [2020-09-25 10:00:33,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:33" (1/1) ... [2020-09-25 10:00:33,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:33" (1/1) ... [2020-09-25 10:00:33,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:33" (1/1) ... [2020-09-25 10:00:33,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:00:33,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:00:33,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:00:33,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:00:33,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:33" (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 10:00:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:00:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:00:33,337 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 10:00:33,338 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 10:00:33,338 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:00:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:00:33,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:00:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 10:00:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 10:00:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:00:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:00:33,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:00:33,622 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:00:33,622 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:00:33,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:00:33 BoogieIcfgContainer [2020-09-25 10:00:33,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:00:33,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:00:33,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:00:33,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:00:33,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:00:32" (1/3) ... [2020-09-25 10:00:33,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:00:33, skipping insertion in model container [2020-09-25 10:00:33,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:33" (2/3) ... [2020-09-25 10:00:33,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75437766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:00:33, skipping insertion in model container [2020-09-25 10:00:33,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:00:33" (3/3) ... [2020-09-25 10:00:33,647 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2020-09-25 10:00:33,672 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:00:33,690 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:00:33,710 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:00:33,744 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:00:33,744 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:00:33,744 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:00:33,744 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:00:33,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:00:33,745 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:00:33,745 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:00:33,745 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:00:33,766 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 10:00:33,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 10:00:33,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:33,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:33,775 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:33,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:33,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 10:00:33,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:33,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145520547] [2020-09-25 10:00:33,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:33,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:33,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:00:33,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:33,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 10:00:33,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:33,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:00:33,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:00:34,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:34,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:34,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:34,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:34,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:00:34,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:34,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:34,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:34,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:34,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:34,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:34,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 10:00:34,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:34,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:34,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:34,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:34,148 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 10:00:34,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145520547] [2020-09-25 10:00:34,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:00:34,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:00:34,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576772501] [2020-09-25 10:00:34,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:00:34,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:34,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:00:34,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:00:34,176 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 10:00:34,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:34,319 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 10:00:34,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:00:34,321 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 10:00:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:34,336 INFO L225 Difference]: With dead ends: 58 [2020-09-25 10:00:34,336 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 10:00:34,341 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 10:00:34,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 10:00:34,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 10:00:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:00:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 10:00:34,408 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 10:00:34,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:34,409 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 10:00:34,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:00:34,409 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 10:00:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 10:00:34,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:34,412 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 10:00:34,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:00:34,413 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:34,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:34,414 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 10:00:34,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:34,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925960566] [2020-09-25 10:00:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:34,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:34,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 10:00:34,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:34,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 10:00:34,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:34,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:34,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:34,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:34,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:34,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:34,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:34,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:34,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:34,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:34,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:34,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:34,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:34,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:34,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:34,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:34,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:34,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 10:00:34,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:34,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:34,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:34,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:34,670 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 10:00:34,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925960566] [2020-09-25 10:00:34,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:00:34,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:00:34,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311675116] [2020-09-25 10:00:34,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:00:34,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:34,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:00:34,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:00:34,675 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 10:00:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:34,756 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 10:00:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:00:34,757 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 10:00:34,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:34,759 INFO L225 Difference]: With dead ends: 50 [2020-09-25 10:00:34,759 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 10:00:34,760 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 10:00:34,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 10:00:34,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 10:00:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:00:34,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 10:00:34,771 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 10:00:34,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:34,772 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 10:00:34,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:00:34,772 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 10:00:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 10:00:34,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:34,774 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 10:00:34,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:00:34,775 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:34,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:34,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 10:00:34,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:34,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612671946] [2020-09-25 10:00:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:35,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:35,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 10:00:35,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:00:35,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-09-25 10:00:35,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:35,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:35,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:00:35,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:00:35,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:35,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:35,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:35,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:35,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:35,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:00:35,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:35,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:35,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:35,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:35,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:35,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:35,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:35,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:35,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:35,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:35,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:35,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:35,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:00:35,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 10:00:35,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:35,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:35,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:35,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:35,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:35,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:35,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:35,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:35,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:35,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:35,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:00:35,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:35,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:35,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:35,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:35,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:35,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:35,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:35,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:35,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:35,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:35,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:00:35,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:35,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:35,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:35,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:35,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:35,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:35,772 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 10:00:35,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612671946] [2020-09-25 10:00:35,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:00:35,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:00:35,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227192970] [2020-09-25 10:00:35,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:35,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:35,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:35,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:35,775 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 10:00:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:35,906 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 10:00:35,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:35,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 10:00:35,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:35,909 INFO L225 Difference]: With dead ends: 58 [2020-09-25 10:00:35,909 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 10:00:35,910 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 10:00:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 10:00:35,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 10:00:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 10:00:35,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 10:00:35,922 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 10:00:35,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:35,922 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 10:00:35,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:35,923 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 10:00:35,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 10:00:35,925 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:35,925 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 10:00:35,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:00:35,925 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:35,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:35,926 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 10:00:35,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:35,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774165315] [2020-09-25 10:00:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:35,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:35,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:36,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:36,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:36,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 10:00:36,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:00:36,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-09-25 10:00:36,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:36,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:36,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:36,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:36,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:00:36,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:36,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:36,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:36,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:36,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:36,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:36,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:36,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:36,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:36,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:36,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:36,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:36,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:36,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:36,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:00:36,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:00:36,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-25 10:00:36,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:36,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:36,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:00:36,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:36,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:36,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:37,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:37,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:37,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:00:37,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:37,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:37,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:37,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:37,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:37,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:37,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:37,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:00:37,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:37,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:37,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:37,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:37,074 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 10:00:37,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774165315] [2020-09-25 10:00:37,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:37,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:00:37,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275554216] [2020-09-25 10:00:37,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:37,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:37,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:37,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:37,079 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 10:00:37,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:37,231 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 10:00:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:37,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 10:00:37,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:37,234 INFO L225 Difference]: With dead ends: 110 [2020-09-25 10:00:37,234 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 10:00:37,236 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 10:00:37,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 10:00:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 10:00:37,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 10:00:37,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 10:00:37,248 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 10:00:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:37,249 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 10:00:37,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:37,249 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 10:00:37,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 10:00:37,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:37,253 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 10:00:37,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:00:37,253 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:37,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:37,254 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 10:00:37,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:37,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239498295] [2020-09-25 10:00:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:37,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:37,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:42,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 10:00:42,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:00:42,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:00:42,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:42,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:42,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:42,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:42,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 10:00:42,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:42,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:42,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:42,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:42,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:00:42,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:42,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:42,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:42,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:42,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:42,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:42,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:43,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:00:44,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:00:44,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2244 [2020-09-25 10:00:44,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:44,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 10:00:44,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:44,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:44,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 10:00:44,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:44,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:44,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:44,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:44,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:44,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:44,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:44,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:44,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:44,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:44,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:00:44,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:44,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:44,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:44,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:00:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:44,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:44,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:00:44,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:44,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:44,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,742 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 10:00:44,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239498295] [2020-09-25 10:00:44,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:44,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:00:44,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732829433] [2020-09-25 10:00:44,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:44,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:44,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:44,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:44,744 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 10:00:44,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:44,870 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2020-09-25 10:00:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:44,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 10:00:44,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:44,873 INFO L225 Difference]: With dead ends: 66 [2020-09-25 10:00:44,873 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 10:00:44,874 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:00:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 10:00:44,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 10:00:44,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 10:00:44,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 10:00:44,886 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 10:00:44,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:44,886 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 10:00:44,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 10:00:44,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 10:00:44,889 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:44,889 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 10:00:44,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:00:44,890 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:44,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:44,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 10:00:44,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:44,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919096237] [2020-09-25 10:00:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:44,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:46,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:49,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:49,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:00:49,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:00:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:00:49,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:49,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:00:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:49,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:49,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:49,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:49,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:49,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:49,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:49,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:49,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:49,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:49,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:49,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:49,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:49,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:49,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:49,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:49,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:49,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:51,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:54,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:54,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:00:54,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:00:54,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:00:54,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:54,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:00:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:00:54,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 10:00:54,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:55,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:55,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:55,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 10:00:55,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:55,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:00:55,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:55,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:55,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:55,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:00:55,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:55,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:55,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:55,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:55,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:55,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:00:55,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:55,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:55,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:55,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:00:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:55,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:55,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 10:00:55,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:00:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:55,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:55,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:55,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:55,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:55,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:00:55,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:55,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:55,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:55,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:55,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:55,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:00:55,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:55,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:55,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:55,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 10:00:55,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919096237] [2020-09-25 10:00:55,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:55,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 10:00:55,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629250848] [2020-09-25 10:00:55,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 10:00:55,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:55,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 10:00:55,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:00:55,409 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 12 states. [2020-09-25 10:00:55,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:55,674 INFO L93 Difference]: Finished difference Result 110 states and 148 transitions. [2020-09-25 10:00:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:00:55,675 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-09-25 10:00:55,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:55,676 INFO L225 Difference]: With dead ends: 110 [2020-09-25 10:00:55,677 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 10:00:55,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:00:55,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 10:00:55,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2020-09-25 10:00:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 10:00:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2020-09-25 10:00:55,688 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 67 [2020-09-25 10:00:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:55,688 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2020-09-25 10:00:55,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 10:00:55,688 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2020-09-25 10:00:55,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 10:00:55,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:55,690 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:55,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:00:55,691 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:55,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:55,691 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 10:00:55,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:55,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692981202] [2020-09-25 10:00:55,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:56,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:57,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:57,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:58,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:00,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:01:00,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 10:01:00,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:01:00,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:00,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:00,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:00,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 10:01:00,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:00,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:00,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:00,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:00,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:00,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:00,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:00,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:00,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:00,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:00,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:00,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:01,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:01,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:01,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:01,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:05,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:01:05,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:01:05,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:01:05,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:05,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:01:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:01:05,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 10:01:05,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:05,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:01:05,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:05,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 10:01:05,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:05,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:01:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:01:05,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:05,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:05,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:06,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:06,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:06,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:01:06,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:06,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:06,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:06,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:01:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:06,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:06,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:06,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:06,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:06,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:01:06,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:06,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:06,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:06,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:06,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:06,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:01:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:06,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:06,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:01:06,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:01:06,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 10:01:06,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:06,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:01:06,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:06,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:06,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:06,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:06,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:01:06,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:06,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:06,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:06,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:06,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:06,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:06,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:06,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:06,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:06,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:01:06,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:06,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 10:01:06,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692981202] [2020-09-25 10:01:06,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:06,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:01:06,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151489078] [2020-09-25 10:01:06,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:01:06,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:06,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:01:06,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:01:06,313 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 11 states. [2020-09-25 10:01:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:06,687 INFO L93 Difference]: Finished difference Result 134 states and 189 transitions. [2020-09-25 10:01:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 10:01:06,687 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-09-25 10:01:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:06,689 INFO L225 Difference]: With dead ends: 134 [2020-09-25 10:01:06,689 INFO L226 Difference]: Without dead ends: 80 [2020-09-25 10:01:06,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:01:06,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-25 10:01:06,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2020-09-25 10:01:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 10:01:06,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-09-25 10:01:06,701 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 69 [2020-09-25 10:01:06,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:06,702 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-09-25 10:01:06,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:01:06,702 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-09-25 10:01:06,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 10:01:06,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:06,704 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:06,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:01:06,705 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:06,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:06,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1523115787, now seen corresponding path program 1 times [2020-09-25 10:01:06,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:06,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525683762] [2020-09-25 10:01:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:06,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:10,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:10,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:10,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:10,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:10,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:10,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:11,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 10:01:11,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-09-25 10:01:11,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:01:11,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:11,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:11,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:11,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:11,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 10:01:11,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:11,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:11,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:11,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:11,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:11,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:11,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:11,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:11,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:11,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:11,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:11,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:11,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:11,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:16,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 10:01:16,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 10:01:16,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:01:16,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:16,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:01:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:01:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 10:01:16,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:16,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:16,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:17,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 10:01:17,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:01:17,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 993 [2020-09-25 10:01:17,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:17,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:17,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:01:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:17,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 10:01:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:17,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:17,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:17,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:01:17,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:01:17,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 10:01:17,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:17,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:17,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:01:17,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:17,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:17,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:17,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:17,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:01:17,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:17,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:17,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:17,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:17,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:01:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:17,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:17,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:17,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:17,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:01:17,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:17,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:17,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:17,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:17,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:01:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:17,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:17,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:17,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:17,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:01:17,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:17,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:17,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:17,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:17,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 10:01:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:17,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:18,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:01:18,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:01:18,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 10:01:18,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:18,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:18,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:18,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:18,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:01:18,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:18,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:18,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:18,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:18,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:18,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:01:18,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:18,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:18,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:18,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:18,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:18,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:18,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:18,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:01:18,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:18,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:18,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:18,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 10:01:18,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525683762] [2020-09-25 10:01:18,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:18,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:01:18,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783010144] [2020-09-25 10:01:18,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:01:18,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:18,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:01:18,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:01:18,224 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 11 states. [2020-09-25 10:01:18,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:18,647 INFO L93 Difference]: Finished difference Result 196 states and 300 transitions. [2020-09-25 10:01:18,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:01:18,648 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 85 [2020-09-25 10:01:18,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:18,650 INFO L225 Difference]: With dead ends: 196 [2020-09-25 10:01:18,650 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 10:01:18,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:01:18,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 10:01:18,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 85. [2020-09-25 10:01:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 10:01:18,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 104 transitions. [2020-09-25 10:01:18,664 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 104 transitions. Word has length 85 [2020-09-25 10:01:18,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:18,664 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 104 transitions. [2020-09-25 10:01:18,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:01:18,665 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 104 transitions. [2020-09-25 10:01:18,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 10:01:18,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:18,666 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:18,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:01:18,667 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:18,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:18,667 INFO L82 PathProgramCache]: Analyzing trace with hash -594280133, now seen corresponding path program 2 times [2020-09-25 10:01:18,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:18,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327383387] [2020-09-25 10:01:18,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:18,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:20,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:20,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:20,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:22,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:22,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:22,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:22,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:23,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 10:01:23,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 10:01:23,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 10:01:23,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:23,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:23,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:23,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:23,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 10:01:23,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:23,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:23,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:23,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:23,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:23,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:23,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:23,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:23,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:23,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:23,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:28,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 10:01:28,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:01:28,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:01:28,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:28,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:28,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 10:01:28,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:01:28,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:01:28,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:28,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:28,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:28,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:29,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking...