/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:54:12,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:54:12,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:54:12,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:54:12,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:54:12,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:54:12,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:54:12,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:54:12,290 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:54:12,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:54:12,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:54:12,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:54:12,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:54:12,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:54:12,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:54:12,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:54:12,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:54:12,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:54:12,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:54:12,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:54:12,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:54:12,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:54:12,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:54:12,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:54:12,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:54:12,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:54:12,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:54:12,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:54:12,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:54:12,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:54:12,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:54:12,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:54:12,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:54:12,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:54:12,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:54:12,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:54:12,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:54:12,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:54:12,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:54:12,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:54:12,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:54:12,327 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 08:54:12,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:54:12,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:54:12,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:54:12,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:54:12,355 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:54:12,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:54:12,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:54:12,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:54:12,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:54:12,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:54:12,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:54:12,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:54:12,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:54:12,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:54:12,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:54:12,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:54:12,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:54:12,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:54:12,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:54:12,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:54:12,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:54:12,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:54:12,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:54:12,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:54:12,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:54:12,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:54:12,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:54:12,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:54:12,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:54:12,361 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:54:12,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:54:12,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:54:12,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:54:12,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:54:12,919 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:54:12,921 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-25 08:54:13,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1975d7e24/e299f5c9c9a645a6bb7996e0fcfcf6b3/FLAG195871104 [2020-09-25 08:54:13,558 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:54:13,559 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-1.c [2020-09-25 08:54:13,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1975d7e24/e299f5c9c9a645a6bb7996e0fcfcf6b3/FLAG195871104 [2020-09-25 08:54:13,910 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1975d7e24/e299f5c9c9a645a6bb7996e0fcfcf6b3 [2020-09-25 08:54:13,923 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:54:13,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:54:13,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:54:13,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:54:13,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:54:13,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:54:13" (1/1) ... [2020-09-25 08:54:13,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd7b52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:13, skipping insertion in model container [2020-09-25 08:54:13,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:54:13" (1/1) ... [2020-09-25 08:54:13,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:54:13,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:54:14,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:54:14,246 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:54:14,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:54:14,280 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:54:14,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14 WrapperNode [2020-09-25 08:54:14,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:54:14,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:54:14,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:54:14,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:54:14,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (1/1) ... [2020-09-25 08:54:14,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:54:14,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:54:14,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:54:14,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:54:14,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (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 08:54:14,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:54:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:54:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 08:54:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 08:54:14,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:54:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:54:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:54:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 08:54:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 08:54:14,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:54:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:54:14,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:54:14,717 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:54:14,717 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:54:14,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:54:14 BoogieIcfgContainer [2020-09-25 08:54:14,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:54:14,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:54:14,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:54:14,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:54:14,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:54:13" (1/3) ... [2020-09-25 08:54:14,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438a14e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:54:14, skipping insertion in model container [2020-09-25 08:54:14,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:54:14" (2/3) ... [2020-09-25 08:54:14,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438a14e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:54:14, skipping insertion in model container [2020-09-25 08:54:14,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:54:14" (3/3) ... [2020-09-25 08:54:14,736 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2020-09-25 08:54:14,751 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:54:14,764 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:54:14,821 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:54:14,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:54:14,872 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:54:14,872 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:54:14,872 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:54:14,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:54:14,872 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:54:14,873 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:54:14,873 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:54:14,895 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 08:54:14,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 08:54:14,902 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:14,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:14,904 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:14,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:14,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 08:54:14,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:14,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021878024] [2020-09-25 08:54:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:15,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:15,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:15,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:54:15,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:15,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 08:54:15,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:15,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:15,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:54:15,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:54:15,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:15,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:15,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:15,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:15,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:15,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:54:15,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:15,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:15,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:15,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:15,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:15,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:15,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:15,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:15,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 08:54:15,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:15,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:15,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:15,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:15,256 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 08:54:15,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021878024] [2020-09-25 08:54:15,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:54:15,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:54:15,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528512397] [2020-09-25 08:54:15,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:54:15,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:15,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:54:15,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:54:15,285 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 08:54:15,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:15,427 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 08:54:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:54:15,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 08:54:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:15,443 INFO L225 Difference]: With dead ends: 58 [2020-09-25 08:54:15,444 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 08:54:15,448 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 08:54:15,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 08:54:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 08:54:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 08:54:15,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 08:54:15,502 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 08:54:15,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:15,502 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 08:54:15,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:54:15,503 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 08:54:15,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 08:54:15,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:15,505 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 08:54:15,505 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:54:15,506 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:15,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:15,506 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 08:54:15,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:15,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132731423] [2020-09-25 08:54:15,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:15,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:15,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:15,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 08:54:15,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:15,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 08:54:15,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:15,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:15,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:15,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:15,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:15,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:15,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:15,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:15,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:15,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:15,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:54:15,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:15,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:15,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:15,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:15,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:15,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:15,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:15,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:15,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 08:54:15,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:15,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:15,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:54:15,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:15,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:15,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:15,740 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 08:54:15,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132731423] [2020-09-25 08:54:15,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:54:15,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:54:15,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323959698] [2020-09-25 08:54:15,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:54:15,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:15,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:54:15,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:54:15,744 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 08:54:15,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:15,828 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 08:54:15,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:54:15,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 08:54:15,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:15,831 INFO L225 Difference]: With dead ends: 50 [2020-09-25 08:54:15,831 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 08:54:15,832 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 08:54:15,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 08:54:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 08:54:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 08:54:15,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 08:54:15,842 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 08:54:15,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:15,843 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 08:54:15,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:54:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 08:54:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 08:54:15,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:15,845 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 08:54:15,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:54:15,846 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:15,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:15,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 08:54:15,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:15,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675571760] [2020-09-25 08:54:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:15,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:15,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:15,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:16,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 08:54:16,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:16,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-09-25 08:54:16,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:16,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:16,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:16,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:54:16,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:54:16,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:16,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:16,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:16,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:54:16,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:16,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:16,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:16,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:16,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:16,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:54:16,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:16,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 08:54:16,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:16,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:16,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:16,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:54:16,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:16,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:16,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:16,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:16,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:16,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:54:16,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:16,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:16,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:16,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:16,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:16,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:16,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:16,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:16,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:54:16,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:16,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:16,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:16,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:16,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:16,846 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 08:54:16,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675571760] [2020-09-25 08:54:16,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:54:16,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:54:16,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765380258] [2020-09-25 08:54:16,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:54:16,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:16,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:54:16,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:54:16,849 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 08:54:16,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:16,976 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 08:54:16,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:54:16,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 08:54:16,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:16,979 INFO L225 Difference]: With dead ends: 58 [2020-09-25 08:54:16,979 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 08:54:16,980 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 08:54:16,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 08:54:16,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 08:54:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 08:54:16,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 08:54:16,992 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 08:54:16,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:16,992 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 08:54:16,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:54:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 08:54:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 08:54:17,002 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:17,002 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 08:54:17,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:54:17,002 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:17,003 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 08:54:17,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:17,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314221787] [2020-09-25 08:54:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:17,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:17,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:54:17,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:54:17,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-09-25 08:54:17,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:17,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:54:17,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:17,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:17,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:17,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:17,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:17,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:54:17,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:17,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:17,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:17,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:17,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:17,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:17,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:18,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:54:18,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:54:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-09-25 08:54:18,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:18,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:54:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:18,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:18,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:18,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:18,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:18,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 08:54:18,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:18,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:18,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:18,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:18,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:18,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:18,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:18,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:18,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:54:18,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:18,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:18,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:18,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:18,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:18,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:18,122 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 08:54:18,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314221787] [2020-09-25 08:54:18,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:18,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:54:18,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213709849] [2020-09-25 08:54:18,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:54:18,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:18,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:54:18,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:54:18,126 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 08:54:18,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:18,286 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 08:54:18,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:54:18,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 08:54:18,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:18,289 INFO L225 Difference]: With dead ends: 110 [2020-09-25 08:54:18,289 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 08:54:18,291 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 08:54:18,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 08:54:18,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 08:54:18,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 08:54:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 08:54:18,303 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 08:54:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:18,304 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 08:54:18,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:54:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 08:54:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:54:18,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:18,308 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 08:54:18,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:54:18,308 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:18,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:18,309 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 08:54:18,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:18,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496400047] [2020-09-25 08:54:18,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:18,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:18,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:23,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:23,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:54:23,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:54:23,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:54:23,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:23,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 08:54:23,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 08:54:23,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:23,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:23,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:23,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:23,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:23,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:23,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:23,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:23,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:23,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:23,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:23,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:23,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:23,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:23,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:24,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:27,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:27,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 08:54:27,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 08:54:27,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4310 [2020-09-25 08:54:27,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:27,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:54:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:27,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:54:27,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:27,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:27,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:27,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:27,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:54:27,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:27,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 08:54:27,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:27,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:54:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:27,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:54:27,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:27,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:27,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:27,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:27,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:27,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:27,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:54:27,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:27,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:27,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:27,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:27,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:28,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:54:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:28,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:28,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:28,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:28,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:54:28,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:28,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:28,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:28,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:28,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:28,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:54:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:28,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:28,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:28,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:54:28,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:28,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:28,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:28,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 08:54:28,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496400047] [2020-09-25 08:54:28,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:28,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:54:28,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614796358] [2020-09-25 08:54:28,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:54:28,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:28,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:54:28,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:54:28,043 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 9 states. [2020-09-25 08:54:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:28,291 INFO L93 Difference]: Finished difference Result 140 states and 211 transitions. [2020-09-25 08:54:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:54:28,292 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 08:54:28,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:28,294 INFO L225 Difference]: With dead ends: 140 [2020-09-25 08:54:28,295 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 08:54:28,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:54:28,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 08:54:28,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2020-09-25 08:54:28,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 08:54:28,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2020-09-25 08:54:28,315 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 51 [2020-09-25 08:54:28,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:28,315 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2020-09-25 08:54:28,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:54:28,315 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2020-09-25 08:54:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 08:54:28,319 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:28,320 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 08:54:28,320 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:54:28,320 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:28,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:28,320 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 08:54:28,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:28,321 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305358005] [2020-09-25 08:54:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:28,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:28,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:29,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:29,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:30,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:31,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:33,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:33,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:33,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 08:54:33,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 08:54:33,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 08:54:33,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:33,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:54:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 08:54:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:33,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:33,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:33,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:33,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:33,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:33,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:33,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:33,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:33,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:33,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:33,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:33,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:33,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:34,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:38,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:38,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 08:54:38,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 08:54:38,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:54:38,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:38,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:54:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 08:54:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:38,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:38,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:38,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:38,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:54:38,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:38,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 08:54:38,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:38,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:38,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:54:38,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:38,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:38,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:38,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:38,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:38,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:38,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:54:38,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:38,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:38,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:38,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:38,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:38,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:38,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:38,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:38,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:38,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:54:38,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:38,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:38,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:38,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:38,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:38,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:54:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:38,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:38,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:38,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:54:38,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 08:54:38,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:38,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:54:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:38,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:38,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:38,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:38,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 08:54:38,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:38,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:38,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:38,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:38,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:38,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:38,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:38,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:54:38,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:38,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:38,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:38,943 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 08:54:38,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305358005] [2020-09-25 08:54:38,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:38,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:54:38,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189519962] [2020-09-25 08:54:38,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:54:38,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:38,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:54:38,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:54:38,945 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand 11 states. [2020-09-25 08:54:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:39,295 INFO L93 Difference]: Finished difference Result 214 states and 356 transitions. [2020-09-25 08:54:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 08:54:39,295 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-09-25 08:54:39,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:39,298 INFO L225 Difference]: With dead ends: 214 [2020-09-25 08:54:39,299 INFO L226 Difference]: Without dead ends: 136 [2020-09-25 08:54:39,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:54:39,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-25 08:54:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 102. [2020-09-25 08:54:39,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 08:54:39,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 149 transitions. [2020-09-25 08:54:39,329 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 149 transitions. Word has length 69 [2020-09-25 08:54:39,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:39,330 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 149 transitions. [2020-09-25 08:54:39,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:54:39,330 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 149 transitions. [2020-09-25 08:54:39,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 08:54:39,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:39,340 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:39,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:54:39,341 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:39,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:39,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1513763016, now seen corresponding path program 1 times [2020-09-25 08:54:39,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:39,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1855130486] [2020-09-25 08:54:39,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:39,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:39,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:39,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:39,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:39,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:39,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:39,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:42,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:42,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:44,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:44,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 08:54:44,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 08:54:44,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:54:44,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:44,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:54:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 08:54:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:54:44,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:44,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:44,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:44,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:44,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:44,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:44,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:44,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:44,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:44,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:44,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:44,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:44,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:44,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:44,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:47,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:49,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 08:54:49,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 08:54:49,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:54:49,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:49,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:49,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:49,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:54:49,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 08:54:49,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:49,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:49,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:49,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:54:49,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:54:49,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 08:54:49,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:49,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:54:49,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:49,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:49,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:49,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:49,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:49,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:54:49,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:49,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:49,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:54:49,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:49,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:49,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:49,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:49,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:49,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:54:49,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:49,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:49,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:49,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:49,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:54:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:49,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:49,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:52,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:52,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:54:52,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:54:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2447 [2020-09-25 08:54:52,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:52,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:54:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:54:52,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 08:54:52,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:52,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:52,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:52,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:52,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:54:52,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:54:52,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 08:54:52,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:52,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:54:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:52,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 08:54:52,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:52,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:54:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:52,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:52,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:52,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:52,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:52,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:54:52,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:52,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:52,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:52,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:52,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:54:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:52,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:52,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:54:52,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:52,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:54:52,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:52,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:52,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:52,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:52,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:54:52,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 08:54:52,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 08:54:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:52,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:52,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:52,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:54:52,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:52,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:54:52,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:52,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:54:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:54:52,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:52,394 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 39 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 08:54:52,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1855130486] [2020-09-25 08:54:52,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:54:52,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:54:52,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856689759] [2020-09-25 08:54:52,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:54:52,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:54:52,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:54:52,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:54:52,397 INFO L87 Difference]: Start difference. First operand 102 states and 149 transitions. Second operand 11 states. [2020-09-25 08:54:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:54:52,735 INFO L93 Difference]: Finished difference Result 240 states and 409 transitions. [2020-09-25 08:54:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:54:52,735 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-09-25 08:54:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:54:52,738 INFO L225 Difference]: With dead ends: 240 [2020-09-25 08:54:52,738 INFO L226 Difference]: Without dead ends: 136 [2020-09-25 08:54:52,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:54:52,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-25 08:54:52,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 116. [2020-09-25 08:54:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-25 08:54:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 168 transitions. [2020-09-25 08:54:52,759 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 168 transitions. Word has length 87 [2020-09-25 08:54:52,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:54:52,760 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 168 transitions. [2020-09-25 08:54:52,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:54:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 168 transitions. [2020-09-25 08:54:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 08:54:52,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:54:52,763 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:54:52,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:54:52,763 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:54:52,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:54:52,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1523115787, now seen corresponding path program 1 times [2020-09-25 08:54:52,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:54:52,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314375746] [2020-09-25 08:54:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:54:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:52,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:52,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:52,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:53,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:57,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:57,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 08:54:57,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 08:54:57,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 08:54:57,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:57,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:54:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:54:57,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 08:54:57,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:57,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:54:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:57,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:57,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:54:57,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:54:57,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:54:57,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:54:57,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:54:57,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:54:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:54:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:54:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:54:57,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:54:57,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:54:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:54:57,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:57,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:57,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:58,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:59,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:59,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:59,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:59,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:54:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:02,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 08:55:02,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 08:55:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 08:55:02,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:02,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:02,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:55:02,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 08:55:02,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 08:55:02,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:02,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:55:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:02,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:02,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:03,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:03,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:03,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:03,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 08:55:03,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:55:03,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-25 08:55:03,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:03,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:55:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 08:55:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:03,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:55:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:03,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:03,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:03,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:03,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:55:03,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:03,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 08:55:03,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:03,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:03,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:55:03,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:03,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:55:03,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:03,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:55:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:03,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:03,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:03,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:55:03,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:03,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:03,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:03,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:55:03,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 08:55:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:03,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:03,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:03,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:03,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:03,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:55:03,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:03,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:55:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:03,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:55:03,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:03,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 08:55:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:03,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:04,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:04,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:04,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:04,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:55:04,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:04,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:55:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:55:04,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:04,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 08:55:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:04,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:04,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:04,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 08:55:04,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:55:04,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 08:55:04,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:04,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:04,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:55:04,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 08:55:04,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 08:55:04,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:04,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 08:55:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:04,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:04,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:04,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 08:55:04,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:04,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 08:55:04,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:04,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:55:04,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:04,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 08:55:04,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:04,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:04,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:04,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:04,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:04,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:55:04,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:04,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:04,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:55:04,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:04,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:55:04,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 27 proven. 35 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 08:55:04,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314375746] [2020-09-25 08:55:04,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:55:04,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 08:55:04,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205781561] [2020-09-25 08:55:04,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 08:55:04,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:55:04,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 08:55:04,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:55:04,303 INFO L87 Difference]: Start difference. First operand 116 states and 168 transitions. Second operand 13 states. [2020-09-25 08:55:04,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:55:04,710 INFO L93 Difference]: Finished difference Result 238 states and 358 transitions. [2020-09-25 08:55:04,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 08:55:04,711 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 85 [2020-09-25 08:55:04,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:55:04,715 INFO L225 Difference]: With dead ends: 238 [2020-09-25 08:55:04,716 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 08:55:04,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:55:04,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 08:55:04,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 112. [2020-09-25 08:55:04,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 08:55:04,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 145 transitions. [2020-09-25 08:55:04,732 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 145 transitions. Word has length 85 [2020-09-25 08:55:04,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:55:04,732 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 145 transitions. [2020-09-25 08:55:04,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 08:55:04,732 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 145 transitions. [2020-09-25 08:55:04,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 08:55:04,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:04,734 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:55:04,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:55:04,734 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:04,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1745594584, now seen corresponding path program 2 times [2020-09-25 08:55:04,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:04,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233586792] [2020-09-25 08:55:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:04,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:04,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:04,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:04,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:05,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:05,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:05,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:06,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:06,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking...