/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:59:41,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:59:41,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:59:41,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:59:41,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:59:41,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:59:41,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:59:41,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:59:41,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:59:41,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:59:41,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:59:41,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:59:41,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:59:41,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:59:41,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:59:41,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:59:41,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:59:41,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:59:41,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:59:41,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:59:41,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:59:41,865 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:59:41,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:59:41,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:59:41,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:59:41,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:59:41,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:59:41,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:59:41,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:59:41,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:59:41,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:59:41,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:59:41,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:59:41,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:59:41,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:59:41,878 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:59:41,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:59:41,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:59:41,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:59:41,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:59:41,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:59:41,883 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 09:59:41,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:59:41,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:59:41,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:59:41,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:59:41,920 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:59:41,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:59:41,920 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:59:41,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:59:41,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:59:41,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:59:41,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:59:41,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:59:41,921 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:59:41,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:59:41,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:59:41,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:59:41,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:59:41,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:59:41,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:59:41,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:59:41,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:59:41,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:59:41,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:59:41,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:59:41,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:59:41,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:59:41,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:59:41,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:59:41,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:59:41,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 09:59:42,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:59:42,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:59:42,413 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:59:42,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:59:42,415 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:59:42,416 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-25 09:59:42,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/614c9ed19/e0fdd468963c4b3da6c016dd03328a9b/FLAG1050c83c1 [2020-09-25 09:59:43,041 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:59:43,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-1.c [2020-09-25 09:59:43,051 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/614c9ed19/e0fdd468963c4b3da6c016dd03328a9b/FLAG1050c83c1 [2020-09-25 09:59:43,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/614c9ed19/e0fdd468963c4b3da6c016dd03328a9b [2020-09-25 09:59:43,386 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:59:43,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:59:43,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:59:43,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:59:43,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:59:43,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e06715f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43, skipping insertion in model container [2020-09-25 09:59:43,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:59:43,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:59:43,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:59:43,668 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:59:43,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:59:43,706 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:59:43,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43 WrapperNode [2020-09-25 09:59:43,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:59:43,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:59:43,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:59:43,708 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:59:43,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (1/1) ... [2020-09-25 09:59:43,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:59:43,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:59:43,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:59:43,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:59:43,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (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 09:59:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:59:43,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:59:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 09:59:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 09:59:43,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:59:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:59:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:59:43,904 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 09:59:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 09:59:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:59:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:59:43,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:59:44,141 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:59:44,142 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 09:59:44,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:59:44 BoogieIcfgContainer [2020-09-25 09:59:44,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:59:44,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:59:44,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:59:44,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:59:44,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:59:43" (1/3) ... [2020-09-25 09:59:44,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5884da67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:59:44, skipping insertion in model container [2020-09-25 09:59:44,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:59:43" (2/3) ... [2020-09-25 09:59:44,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5884da67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:59:44, skipping insertion in model container [2020-09-25 09:59:44,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:59:44" (3/3) ... [2020-09-25 09:59:44,158 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-1.c [2020-09-25 09:59:44,168 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:59:44,178 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:59:44,201 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:59:44,234 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:59:44,234 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:59:44,234 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:59:44,235 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:59:44,235 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:59:44,235 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:59:44,235 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:59:44,236 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:59:44,261 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 09:59:44,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 09:59:44,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:44,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:59:44,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:44,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:44,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 09:59:44,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:44,286 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017047614] [2020-09-25 09:59:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:44,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:44,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:44,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:59:44,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:44,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 09:59:44,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:44,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:44,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:59:44,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:44,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 09:59:44,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:44,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:44,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:44,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:44,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:44,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 09:59:44,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:44,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:44,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:44,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:44,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:44,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:44,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:44,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:44,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:44,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:59:44,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:44,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:44,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:59:44,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:44,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 09:59:44,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:44,826 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 09:59:44,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017047614] [2020-09-25 09:59:44,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:59:44,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:59:44,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474739292] [2020-09-25 09:59:44,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:59:44,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:44,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:59:44,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:59:44,871 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 09:59:44,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:44,980 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 09:59:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:59:44,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 09:59:44,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:44,998 INFO L225 Difference]: With dead ends: 58 [2020-09-25 09:59:44,998 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 09:59:45,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:59:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 09:59:45,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 09:59:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 09:59:45,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 09:59:45,070 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 09:59:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:45,071 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 09:59:45,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:59:45,072 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 09:59:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 09:59:45,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:45,074 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 09:59:45,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:59:45,075 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:45,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:45,076 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 09:59:45,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:45,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835750872] [2020-09-25 09:59:45,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:45,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:45,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:45,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 09:59:45,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:59:45,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 09:59:45,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:45,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:45,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:59:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:45,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:45,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:45,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:45,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:45,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:45,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:45,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:45,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:45,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:45,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:45,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:45,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:45,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:45,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:45,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:45,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:45,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 09:59:45,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:45,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:45,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:59:45,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:45,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:45,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:45,420 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 09:59:45,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835750872] [2020-09-25 09:59:45,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:59:45,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 09:59:45,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386932244] [2020-09-25 09:59:45,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:59:45,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:45,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:59:45,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:59:45,432 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 09:59:45,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:45,536 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 09:59:45,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:59:45,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 09:59:45,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:45,539 INFO L225 Difference]: With dead ends: 50 [2020-09-25 09:59:45,540 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 09:59:45,541 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 09:59:45,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 09:59:45,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 09:59:45,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 09:59:45,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 09:59:45,553 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 09:59:45,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:45,554 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 09:59:45,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:59:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 09:59:45,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 09:59:45,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:45,557 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 09:59:45,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:59:45,557 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:45,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 09:59:45,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:45,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852201054] [2020-09-25 09:59:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:45,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:45,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:47,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 09:59:47,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1974 [2020-09-25 09:59:47,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:47,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:59:47,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 09:59:47,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:47,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:47,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:47,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:47,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:47,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 09:59:47,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:47,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:47,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:47,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:47,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:47,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:47,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:47,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:47,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 09:59:47,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 09:59:47,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 09:59:47,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:47,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:47,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:47,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:47,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 09:59:47,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:47,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:47,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:47,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:47,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:59:47,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:47,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:47,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:47,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:47,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:59:47,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:47,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 09:59:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:47,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:47,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:47,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 09:59:47,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:47,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 09:59:47,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:47,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:47,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:47,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:47,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:47,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:47,869 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 09:59:47,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852201054] [2020-09-25 09:59:47,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:59:47,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:59:47,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929144685] [2020-09-25 09:59:47,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:59:47,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:47,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:59:47,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:59:47,872 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 09:59:47,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:47,996 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 09:59:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:59:47,997 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 09:59:47,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:47,999 INFO L225 Difference]: With dead ends: 58 [2020-09-25 09:59:47,999 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 09:59:48,000 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 09:59:48,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 09:59:48,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 09:59:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 09:59:48,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 09:59:48,015 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 09:59:48,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:48,016 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 09:59:48,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:59:48,016 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 09:59:48,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 09:59:48,018 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:48,019 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 09:59:48,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:59:48,019 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:48,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:48,020 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 09:59:48,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:48,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307951917] [2020-09-25 09:59:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:48,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:48,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:48,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:48,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:49,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 09:59:49,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:59:49,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-09-25 09:59:49,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:49,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:49,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:59:49,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 09:59:49,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:49,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:49,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:49,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:49,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:49,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:49,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:59:49,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:49,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:49,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:50,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:50,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:59:50,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:59:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 504 [2020-09-25 09:59:50,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:50,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 09:59:50,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 09:59:50,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:50,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 09:59:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:50,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:50,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:50,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:50,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:50,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:59:50,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:50,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:59:50,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:50,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:59:50,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:50,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 09:59:50,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:50,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:50,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:50,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 09:59:50,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:50,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:59:50,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:50,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:59:50,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:59:50,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:50,537 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 09:59:50,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307951917] [2020-09-25 09:59:50,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:59:50,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:59:50,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382306664] [2020-09-25 09:59:50,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:59:50,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:59:50,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:59:50,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:59:50,547 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 09:59:50,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:59:50,716 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 09:59:50,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:59:50,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 09:59:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:59:50,720 INFO L225 Difference]: With dead ends: 72 [2020-09-25 09:59:50,723 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 09:59:50,724 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:59:50,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 09:59:50,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 09:59:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 09:59:50,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 09:59:50,756 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 09:59:50,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:59:50,756 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 09:59:50,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:59:50,757 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 09:59:50,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 09:59:50,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:59:50,762 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 09:59:50,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:59:50,762 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:59:50,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:59:50,766 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 09:59:50,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:59:50,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205664806] [2020-09-25 09:59:50,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:59:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:50,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:50,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:50,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:50,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:50,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:51,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:51,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:54,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:55,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:55,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 09:59:55,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 09:59:55,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:59:55,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:55,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:55,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:59:55,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:59:55,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 09:59:55,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:55,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:59:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:55,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:55,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:59:55,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 09:59:55,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:59:55,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 09:59:55,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 09:59:55,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 09:59:55,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:59:55,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:59:55,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:59:55,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:59:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 09:59:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:59:55,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:55,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:55,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:55,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:56,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:56,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:59:56,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:00,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:00,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:00:00,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:00:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 10:00:00,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:00,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 10:00:00,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:00,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:00,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:00,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:00,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:00,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:00,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:00:00,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 10:00:00,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:00,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:00,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:00,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:00,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:00,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:00,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:00,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:00,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:00:00,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:00,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:00,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:00,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:00,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:00,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:00:00,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:00,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:00,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:00,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:00,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:00,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:00,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:00,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:00,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:00,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:00,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:00,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:00:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:00,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:01,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:01,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:01,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:01,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 10:00:01,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:01,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:01,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:01,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:01,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 10:00:01,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205664806] [2020-09-25 10:00:01,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:01,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 10:00:01,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967126519] [2020-09-25 10:00:01,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:00:01,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:01,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:00:01,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:00:01,067 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 10:00:01,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:01,239 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-09-25 10:00:01,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:00:01,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 10:00:01,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:01,242 INFO L225 Difference]: With dead ends: 70 [2020-09-25 10:00:01,242 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 10:00:01,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:00:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 10:00:01,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2020-09-25 10:00:01,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 10:00:01,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 10:00:01,263 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 10:00:01,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:01,264 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 10:00:01,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:00:01,264 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 10:00:01,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 10:00:01,272 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:01,272 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:01,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:00:01,273 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:01,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 10:00:01,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:01,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1853929996] [2020-09-25 10:00:01,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:01,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:01,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:01,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:01,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:01,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:01,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:02,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:02,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:02,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:06,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:06,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:00:06,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:00:06,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:00:06,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:06,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:06,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:06,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 10:00:06,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:06,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:06,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:06,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:06,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:06,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:06,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:06,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:06,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:06,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:06,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:06,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:06,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:06,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:06,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:06,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:06,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:07,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:07,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:11,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:00:11,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 10:00:11,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:00:11,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:11,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:11,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 10:00:11,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:11,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:11,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:11,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:11,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:11,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 10:00:11,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:11,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:00:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:11,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:00:11,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:11,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:11,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:11,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:11,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:11,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:00:11,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:11,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:11,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:11,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:11,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:11,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:11,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:00:11,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:11,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:11,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:11,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:11,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:11,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:11,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 10:00:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:11,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:11,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 10:00:11,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:11,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 10:00:11,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:11,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:11,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:00:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:11,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:11,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:11,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:11,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:11,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:11,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:11,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:11,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:11,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:11,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:11,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 10:00:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:11,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:11,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:11,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:11,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:11,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:11,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:11,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:11,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:11,577 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 10:00:11,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1853929996] [2020-09-25 10:00:11,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:11,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 10:00:11,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511775670] [2020-09-25 10:00:11,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 10:00:11,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:11,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 10:00:11,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:00:11,579 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 10:00:11,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:11,777 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2020-09-25 10:00:11,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:00:11,778 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 10:00:11,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:11,780 INFO L225 Difference]: With dead ends: 84 [2020-09-25 10:00:11,781 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 10:00:11,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:00:11,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 10:00:11,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2020-09-25 10:00:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-25 10:00:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2020-09-25 10:00:11,793 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 67 [2020-09-25 10:00:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:11,793 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2020-09-25 10:00:11,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 10:00:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2020-09-25 10:00:11,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 10:00:11,795 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:11,795 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:11,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:00:11,796 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:11,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:11,796 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 10:00:11,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:11,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526834457] [2020-09-25 10:00:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:11,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:12,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:13,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:13,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:14,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:15,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:16,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:16,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:16,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:00:16,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 10:00:16,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:00:16,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:16,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:16,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-09-25 10:00:16,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:16,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:16,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:16,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:16,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:16,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:16,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:16,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:16,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:16,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:16,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:16,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:16,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:16,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:16,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:16,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:17,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:18,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:19,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:21,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:21,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:00:21,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:00:21,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 10:00:21,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:21,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:21,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:00:21,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 10:00:21,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 10:00:21,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:21,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:21,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:21,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:22,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:00:22,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:00:22,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 10:00:22,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:22,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:00:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:00:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:22,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:22,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:22,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:22,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:22,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:00:22,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:22,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:22,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:22,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:22,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:22,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:22,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:22,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:22,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:00:22,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:22,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:22,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:22,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:22,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:22,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 10:00:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:22,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:22,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 10:00:22,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:00:22,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 10:00:22,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:22,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:22,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 10:00:22,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:22,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:22,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:22,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:22,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:22,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:00:22,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:22,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:22,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:22,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:22,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:22,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:22,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:00:22,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:22,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:00:22,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:22,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:22,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:22,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:22,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:00:22,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:22,370 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 10:00:22,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526834457] [2020-09-25 10:00:22,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:22,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:00:22,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006546265] [2020-09-25 10:00:22,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:00:22,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:22,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:00:22,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:00:22,373 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 10 states. [2020-09-25 10:00:22,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:22,714 INFO L93 Difference]: Finished difference Result 146 states and 217 transitions. [2020-09-25 10:00:22,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:00:22,715 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-25 10:00:22,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:22,717 INFO L225 Difference]: With dead ends: 146 [2020-09-25 10:00:22,717 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 10:00:22,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:00:22,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 10:00:22,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2020-09-25 10:00:22,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 10:00:22,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-09-25 10:00:22,729 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 69 [2020-09-25 10:00:22,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:22,730 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-09-25 10:00:22,730 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:00:22,730 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-09-25 10:00:22,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 10:00:22,732 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:22,732 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:00:22,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:00:22,733 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:22,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:22,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 10:00:22,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:22,734 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129196700] [2020-09-25 10:00:22,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:22,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:22,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:23,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:25,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:26,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:27,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:27,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 10:00:27,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 10:00:27,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 10:00:27,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:27,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:00:27,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 10:00:27,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:27,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:27,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:27,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:27,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:27,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:27,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:27,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:27,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:27,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:27,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:27,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:27,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:27,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:27,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:27,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:27,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:28,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:28,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:29,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:29,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:32,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 10:00:32,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 10:00:32,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:00:32,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:32,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:00:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 10:00:32,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:00:32,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:32,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:32,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:32,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:32,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:00:32,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:00:32,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 10:00:32,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:32,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:32,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 10:00:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:32,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 10:00:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:33,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:33,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:33,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:33,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:33,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 10:00:33,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:33,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:33,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:00:33,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:33,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:00:33,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:33,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:33,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:33,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:33,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:33,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:33,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:00:33,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:33,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:00:33,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:00:33,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 10:00:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:33,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:00:33,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:00:33,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 10:00:33,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:33,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:00:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:33,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 10:00:33,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:33,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 10:00:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:33,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:33,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:33,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:33,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:33,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:33,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:33,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:33,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 10:00:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:33,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:33,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 10:00:33,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:33,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:00:33,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:33,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:33,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:33,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:33,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:33,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 10:00:33,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129196700] [2020-09-25 10:00:33,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:00:33,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:00:33,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580090635] [2020-09-25 10:00:33,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:00:33,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:00:33,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:00:33,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:00:33,230 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 8 states. [2020-09-25 10:00:33,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:00:33,422 INFO L93 Difference]: Finished difference Result 117 states and 154 transitions. [2020-09-25 10:00:33,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:00:33,423 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-09-25 10:00:33,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:00:33,425 INFO L225 Difference]: With dead ends: 117 [2020-09-25 10:00:33,425 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 10:00:33,426 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:00:33,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 10:00:33,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2020-09-25 10:00:33,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 10:00:33,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 121 transitions. [2020-09-25 10:00:33,440 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 121 transitions. Word has length 71 [2020-09-25 10:00:33,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:00:33,441 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 121 transitions. [2020-09-25 10:00:33,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:00:33,441 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 121 transitions. [2020-09-25 10:00:33,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 10:00:33,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:00:33,443 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 10:00:33,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:00:33,443 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:00:33,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:00:33,444 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 10:00:33,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:00:33,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129462587] [2020-09-25 10:00:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:00:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:33,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:33,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:37,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:38,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 10:00:38,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 10:00:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 10:00:38,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:38,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 10:00:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:00:38,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 10:00:38,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:38,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:00:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:00:38,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:00:38,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:00:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 10:00:38,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:00:38,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:00:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:00:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:00:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:00:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:00:38,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 10:00:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:00:38,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:00:39,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking...