/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_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:00:26,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:00:26,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:00:26,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:00:26,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:00:26,280 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:00:26,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:00:26,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:00:26,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:00:26,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:00:26,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:00:26,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:00:26,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:00:26,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:00:26,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:00:26,292 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:00:26,293 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:00:26,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:00:26,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:00:26,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:00:26,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:00:26,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:00:26,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:00:26,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:00:26,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:00:26,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:00:26,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:00:26,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:00:26,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:00:26,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:00:26,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:00:26,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:00:26,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:00:26,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:00:26,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:00:26,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:00:26,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:00:26,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:00:26,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:00:26,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:00:26,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:00:26,317 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 10:00:26,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:00:26,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:00:26,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:00:26,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:00:26,344 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:00:26,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:00:26,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:00:26,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:00:26,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:00:26,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:00:26,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:00:26,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:00:26,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:00:26,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:00:26,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:00:26,347 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:00:26,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:00:26,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:00:26,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:00:26,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:00:26,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:00:26,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:00:26,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:00:26,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:00:26,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:00:26,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:00:26,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:00:26,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:00:26,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:00:26,349 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 10:00:26,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:00:26,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:00:26,841 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:00:26,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:00:26,845 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:00:26,846 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-25 10:00:26,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39ffbb54d/b70352d4e46b4a90b4ca3f9834301267/FLAG0ad9e929c [2020-09-25 10:00:27,464 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:00:27,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-25 10:00:27,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39ffbb54d/b70352d4e46b4a90b4ca3f9834301267/FLAG0ad9e929c [2020-09-25 10:00:27,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39ffbb54d/b70352d4e46b4a90b4ca3f9834301267 [2020-09-25 10:00:27,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:00:27,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:00:27,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:00:27,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:00:27,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:00:27,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:00:27" (1/1) ... [2020-09-25 10:00:27,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e64c0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:27, skipping insertion in model container [2020-09-25 10:00:27,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:00:27" (1/1) ... [2020-09-25 10:00:27,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:00:27,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:00:28,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:00:28,083 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:00:28,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:00:28,114 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:00:28,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:28 WrapperNode [2020-09-25 10:00:28,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:00:28,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:00:28,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:00:28,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:00:28,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:28" (1/1) ... [2020-09-25 10:00:28,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:28" (1/1) ... [2020-09-25 10:00:28,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:28" (1/1) ... [2020-09-25 10:00:28,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:28" (1/1) ... [2020-09-25 10:00:28,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:28" (1/1) ... [2020-09-25 10:00:28,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:28" (1/1) ... [2020-09-25 10:00:28,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:28" (1/1) ... [2020-09-25 10:00:28,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:00:28,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:00:28,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:00:28,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:00:28,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:28" (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 10:00:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:00:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:00:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 10:00:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 10:00:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:00:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:00:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:00:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 10:00:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 10:00:28,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:00:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:00:28,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:00:28,541 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:00:28,542 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:00:28,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:00:28 BoogieIcfgContainer [2020-09-25 10:00:28,548 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:00:28,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:00:28,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:00:28,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:00:28,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:00:27" (1/3) ... [2020-09-25 10:00:28,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566da70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:00:28, skipping insertion in model container [2020-09-25 10:00:28,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:00:28" (2/3) ... [2020-09-25 10:00:28,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@566da70a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:00:28, skipping insertion in model container [2020-09-25 10:00:28,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:00:28" (3/3) ... [2020-09-25 10:00:28,557 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_25-1.c [2020-09-25 10:00:28,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:00:28,582 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:00:28,608 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:00:28,644 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:00:28,644 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:00:28,644 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:00:28,645 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:00:28,645 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:00:28,645 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:00:28,645 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:00:28,646 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:00:28,672 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 10:00:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 10:00:28,682 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:28,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:28,684 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:28,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:28,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 10:00:28,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:28,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160288658] [2020-09-25 10:00:28,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:28,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:29,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:29,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:00:29,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:29,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 10:00:29,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:29,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:29,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:29,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:00:29,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:29,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:00:29,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:29,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:29,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:29,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:29,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:29,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:00:29,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:29,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:29,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:29,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:29,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:29,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:29,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:29,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:00:29,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:29,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:29,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:00:29,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:29,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:00:29,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:29,177 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 10:00:29,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160288658] [2020-09-25 10:00:29,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:00:29,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:00:29,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378075764] [2020-09-25 10:00:29,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:00:29,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:29,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:00:29,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:00:29,211 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 10:00:29,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:29,311 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 10:00:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:00:29,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 10:00:29,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:29,329 INFO L225 Difference]: With dead ends: 58 [2020-09-25 10:00:29,329 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 10:00:29,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:00:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 10:00:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 10:00:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:00:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 10:00:29,394 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 10:00:29,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:29,395 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 10:00:29,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:00:29,396 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 10:00:29,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 10:00:29,398 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:29,398 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 10:00:29,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:00:29,399 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:29,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:29,399 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 10:00:29,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:29,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66142975] [2020-09-25 10:00:29,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:29,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:29,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:29,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:29,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 10:00:29,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:29,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 10:00:29,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:29,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:29,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:29,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:29,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:29,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:29,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:29,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:29,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:00:29,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:29,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:29,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:29,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:29,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:29,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:29,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:29,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:29,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:29,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 10:00:29,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:29,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:29,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:00:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:29,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:29,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:29,660 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 10:00:29,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66142975] [2020-09-25 10:00:29,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:00:29,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:00:29,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416715675] [2020-09-25 10:00:29,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:00:29,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:29,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:00:29,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:00:29,669 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 10:00:29,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:29,747 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 10:00:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:00:29,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 10:00:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:29,750 INFO L225 Difference]: With dead ends: 50 [2020-09-25 10:00:29,750 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 10:00:29,751 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 10:00:29,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 10:00:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 10:00:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 10:00:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 10:00:29,762 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 10:00:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:29,763 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 10:00:29,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:00:29,763 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 10:00:29,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 10:00:29,765 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:29,766 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 10:00:29,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:00:29,766 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:29,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:29,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 10:00:29,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:29,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396255209] [2020-09-25 10:00:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:29,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:29,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:29,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:30,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:31,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:31,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 10:00:31,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:00:31,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1960 [2020-09-25 10:00:31,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:31,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 10:00:31,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:31,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:31,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:31,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:31,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:31,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:31,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:00:31,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:31,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:31,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:31,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:31,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:31,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:31,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:31,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:31,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:31,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:31,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:31,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:00:31,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-25 10:00:31,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:31,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:31,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:31,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:31,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:32,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:32,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:32,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:32,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:32,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:00:32,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:32,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:32,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:32,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:32,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:32,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:32,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:32,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:32,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:32,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:00:32,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:32,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:32,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:32,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:32,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:32,080 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 10:00:32,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396255209] [2020-09-25 10:00:32,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:00:32,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:00:32,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260705141] [2020-09-25 10:00:32,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:32,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:32,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:32,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:32,083 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 10:00:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:32,211 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 10:00:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:32,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 10:00:32,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:32,214 INFO L225 Difference]: With dead ends: 58 [2020-09-25 10:00:32,215 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 10:00:32,215 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 10:00:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 10:00:32,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 10:00:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 10:00:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 10:00:32,227 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 10:00:32,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:32,227 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 10:00:32,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:32,228 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 10:00:32,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 10:00:32,230 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:32,230 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 10:00:32,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:00:32,231 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:32,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:32,231 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 10:00:32,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:32,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136360735] [2020-09-25 10:00:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:32,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:33,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 10:00:33,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:00:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1661 [2020-09-25 10:00:33,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:33,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 10:00:33,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:33,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:33,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:33,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:33,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:33,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:00:33,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:33,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:33,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:33,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:34,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:00:34,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:00:34,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-09-25 10:00:34,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:34,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:00:34,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:34,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:34,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:34,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:34,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:34,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:00:34,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:34,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:34,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:34,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:34,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:34,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:34,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:34,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:34,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:00:34,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:34,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:34,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 10:00:34,532 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 10:00:34,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136360735] [2020-09-25 10:00:34,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:34,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:00:34,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521233842] [2020-09-25 10:00:34,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:34,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:34,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:34,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:34,536 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 10:00:34,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:34,674 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 10:00:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:34,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 10:00:34,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:34,677 INFO L225 Difference]: With dead ends: 72 [2020-09-25 10:00:34,677 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 10:00:34,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:00:34,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 10:00:34,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 10:00:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 10:00:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 10:00:34,691 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 10:00:34,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:34,691 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 10:00:34,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:34,692 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 10:00:34,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 10:00:34,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:34,694 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 10:00:34,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:00:34,695 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:34,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:34,695 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 10:00:34,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:34,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894635909] [2020-09-25 10:00:34,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:34,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:34,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:35,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:35,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:39,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 10:00:39,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:00:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:00:39,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:39,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:39,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 10:00:39,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:00:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:39,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:39,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:39,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:39,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:39,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:39,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:39,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:39,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:39,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:40,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:41,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:00:44,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:00:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:00:44,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:44,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 10:00:44,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:44,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:00:44,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 10:00:44,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:44,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:44,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:44,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:44,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:00:44,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:44,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:44,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:44,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 10:00:44,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:44,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:44,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:44,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:44,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:44,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:00:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:44,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:44,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:44,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:44,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:44,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 10:00:44,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:44,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:44,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:44,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:44,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:44,992 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 10:00:44,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894635909] [2020-09-25 10:00:44,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:44,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:00:44,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285204987] [2020-09-25 10:00:44,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:44,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:44,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:44,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:44,996 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 10:00:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:45,180 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-09-25 10:00:45,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:45,181 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 10:00:45,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:45,183 INFO L225 Difference]: With dead ends: 70 [2020-09-25 10:00:45,183 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 10:00:45,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:00:45,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 10:00:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2020-09-25 10:00:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 10:00:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 10:00:45,194 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 10:00:45,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:45,195 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 10:00:45,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 10:00:45,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 10:00:45,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:45,198 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 10:00:45,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:00:45,198 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:45,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:45,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 10:00:45,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:45,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462786856] [2020-09-25 10:00:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:45,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:45,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:46,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:46,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:46,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:50,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:00:50,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:00:50,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:00:50,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:50,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:50,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:50,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:50,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:00:50,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:50,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:50,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:50,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:50,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:50,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:50,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:50,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:50,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:50,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:50,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:50,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:50,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:50,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:51,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:51,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:54,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:54,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:54,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:54,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:00:55,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 10:00:55,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:00:55,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:55,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 10:00:55,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:55,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:55,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:55,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 10:00:55,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:00:55,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:55,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:00:55,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:55,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:55,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:00:55,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:55,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:55,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:55,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:55,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:00:55,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:55,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:55,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:00:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:55,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:55,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 10:00:55,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:55,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:55,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:55,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:55,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:55,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:55,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:55,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:55,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:55,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:55,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:55,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:55,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:55,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:55,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 10:00:55,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462786856] [2020-09-25 10:00:55,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:55,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:00:55,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916114864] [2020-09-25 10:00:55,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:00:55,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:55,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:00:55,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:00:55,526 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 10:00:55,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:55,714 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2020-09-25 10:00:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:00:55,715 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 10:00:55,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:55,717 INFO L225 Difference]: With dead ends: 84 [2020-09-25 10:00:55,717 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 10:00:55,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:00:55,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 10:00:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2020-09-25 10:00:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 10:00:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2020-09-25 10:00:55,729 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 67 [2020-09-25 10:00:55,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:55,730 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2020-09-25 10:00:55,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:00:55,730 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2020-09-25 10:00:55,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 10:00:55,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:55,733 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 10:00:55,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:00:55,733 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:55,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:55,733 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 10:00:55,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:55,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827640159] [2020-09-25 10:00:55,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:55,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:55,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:56,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:56,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:57,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:59,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:00,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:01:00,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 10:01:00,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:01:00,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:00,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:00,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 10:01:00,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:00,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:00,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:00,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:00,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:00,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:00,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:00,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:00,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:00,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:00,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:00,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:00,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:00,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:00,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:01,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:05,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:01:05,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:01:05,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:01:05,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:05,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:05,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:01:05,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:01:05,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:01:05,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:05,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:05,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,944 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 10:01:05,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 10:01:05,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:05,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:01:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:05,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:01:05,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:05,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:05,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:05,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:05,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:05,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:01:05,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:05,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:05,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:05,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:05,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:05,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:05,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:05,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:05,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:05,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:05,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:01:05,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:05,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:05,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:05,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:06,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:01:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:06,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:06,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:01:06,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:01:06,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-09-25 10:01:06,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:06,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:06,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:06,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:06,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:01:06,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:06,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:06,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:06,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:06,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:01:06,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:06,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:06,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:06,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:06,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:06,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:06,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:06,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:06,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:01:06,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:06,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:01:06,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:06,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:06,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:06,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:06,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:01:06,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:06,329 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 10:01:06,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827640159] [2020-09-25 10:01:06,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:06,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:01:06,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704396959] [2020-09-25 10:01:06,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:01:06,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:06,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:01:06,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:01:06,332 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 11 states. [2020-09-25 10:01:06,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:06,752 INFO L93 Difference]: Finished difference Result 159 states and 246 transitions. [2020-09-25 10:01:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:01:06,753 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-09-25 10:01:06,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:06,755 INFO L225 Difference]: With dead ends: 159 [2020-09-25 10:01:06,755 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 10:01:06,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:01:06,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 10:01:06,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2020-09-25 10:01:06,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 10:01:06,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-09-25 10:01:06,768 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 69 [2020-09-25 10:01:06,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:06,768 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-09-25 10:01:06,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:01:06,769 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-09-25 10:01:06,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 10:01:06,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:06,771 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:01:06,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:01:06,772 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:06,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:06,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 10:01:06,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:06,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165650752] [2020-09-25 10:01:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:06,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:06,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:07,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:08,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:11,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:01:11,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 10:01:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:01:11,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:11,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:11,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 10:01:11,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:11,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:11,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:11,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:11,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:11,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:11,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:11,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:11,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:11,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:11,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:11,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:11,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:12,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:13,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:16,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:01:16,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:01:16,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:01:16,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:16,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:01:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:01:16,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 10:01:16,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:16,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:16,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:16,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:17,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:01:17,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:01:17,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 10:01:17,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:17,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:01:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:17,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 10:01:17,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:17,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:17,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:17,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:17,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:17,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:01:17,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:17,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:17,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:01:17,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:17,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:17,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:17,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:17,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:17,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:01:17,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:17,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:17,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:17,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:17,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 10:01:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:17,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:17,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:01:17,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:01:17,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-09-25 10:01:17,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:17,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:17,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:01:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:01:17,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:01:17,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:17,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:01:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:17,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:17,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:17,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:17,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:01:17,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:17,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:17,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:17,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:01:17,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:01:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:17,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:17,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:17,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:01:17,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:17,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:01:17,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:17,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:17,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:01:17,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:17,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:01:17,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 10:01:17,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165650752] [2020-09-25 10:01:17,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:01:17,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:01:17,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784681063] [2020-09-25 10:01:17,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:01:17,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:01:17,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:01:17,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:01:17,870 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 11 states. [2020-09-25 10:01:18,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:01:18,221 INFO L93 Difference]: Finished difference Result 154 states and 213 transitions. [2020-09-25 10:01:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:01:18,222 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 10:01:18,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:01:18,224 INFO L225 Difference]: With dead ends: 154 [2020-09-25 10:01:18,225 INFO L226 Difference]: Without dead ends: 95 [2020-09-25 10:01:18,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:01:18,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-25 10:01:18,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 65. [2020-09-25 10:01:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 10:01:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-09-25 10:01:18,237 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 71 [2020-09-25 10:01:18,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:01:18,238 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-09-25 10:01:18,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:01:18,238 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-09-25 10:01:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 10:01:18,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:01:18,239 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 10:01:18,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:01:18,240 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:01:18,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:01:18,240 INFO L82 PathProgramCache]: Analyzing trace with hash -594280133, now seen corresponding path program 1 times [2020-09-25 10:01:18,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:01:18,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120268885] [2020-09-25 10:01:18,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:01:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:20,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:20,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:21,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:22,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:22,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:23,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 10:01:23,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 10:01:23,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:01:23,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:23,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:01:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:01:23,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 10:01:23,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:23,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:01:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:23,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:01:23,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:01:23,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:01:23,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:01:23,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:01:23,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:01:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:01:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:01:23,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:01:23,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:01:23,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:01:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:01:23,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:01:23,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking...