/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:23:06,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:23:06,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:23:07,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:23:07,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:23:07,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:23:07,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:23:07,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:23:07,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:23:07,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:23:07,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:23:07,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:23:07,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:23:07,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:23:07,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:23:07,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:23:07,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:23:07,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:23:07,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:23:07,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:23:07,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:23:07,081 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:23:07,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:23:07,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:23:07,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:23:07,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:23:07,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:23:07,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:23:07,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:23:07,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:23:07,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:23:07,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:23:07,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:23:07,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:23:07,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:23:07,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:23:07,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:23:07,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:23:07,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:23:07,099 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:23:07,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:23:07,101 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 13:23:07,147 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:23:07,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:23:07,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:23:07,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:23:07,150 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:23:07,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:23:07,151 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:23:07,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:23:07,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:23:07,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:23:07,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:23:07,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:23:07,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:23:07,153 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:23:07,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:23:07,153 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:23:07,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:23:07,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:23:07,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:23:07,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:23:07,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:23:07,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:23:07,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:23:07,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:23:07,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:23:07,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:23:07,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:23:07,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:23:07,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:23:07,156 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 13:23:07,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:23:07,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:23:07,669 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:23:07,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:23:07,671 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:23:07,672 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-25 13:23:07,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/382822875/92f70c99febc44c3a6efa08088e3180e/FLAGb0197b07b [2020-09-25 13:23:08,277 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:23:08,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_25-1.c [2020-09-25 13:23:08,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/382822875/92f70c99febc44c3a6efa08088e3180e/FLAGb0197b07b [2020-09-25 13:23:08,638 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/382822875/92f70c99febc44c3a6efa08088e3180e [2020-09-25 13:23:08,652 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:23:08,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:23:08,659 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:23:08,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:23:08,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:23:08,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:23:08" (1/1) ... [2020-09-25 13:23:08,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c4f371a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:08, skipping insertion in model container [2020-09-25 13:23:08,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:23:08" (1/1) ... [2020-09-25 13:23:08,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:23:08,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:23:08,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:23:08,936 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:23:08,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:23:08,970 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:23:08,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:08 WrapperNode [2020-09-25 13:23:08,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:23:08,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:23:08,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:23:08,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:23:08,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:08" (1/1) ... [2020-09-25 13:23:08,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:08" (1/1) ... [2020-09-25 13:23:09,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:08" (1/1) ... [2020-09-25 13:23:09,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:08" (1/1) ... [2020-09-25 13:23:09,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:08" (1/1) ... [2020-09-25 13:23:09,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:08" (1/1) ... [2020-09-25 13:23:09,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:08" (1/1) ... [2020-09-25 13:23:09,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:23:09,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:23:09,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:23:09,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:23:09,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:08" (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 13:23:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:23:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:23:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 13:23:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 13:23:09,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:23:09,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:23:09,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:23:09,167 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 13:23:09,167 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 13:23:09,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:23:09,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:23:09,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:23:09,432 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:23:09,432 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:23:09,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:23:09 BoogieIcfgContainer [2020-09-25 13:23:09,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:23:09,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:23:09,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:23:09,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:23:09,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:23:08" (1/3) ... [2020-09-25 13:23:09,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b4b9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:23:09, skipping insertion in model container [2020-09-25 13:23:09,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:23:08" (2/3) ... [2020-09-25 13:23:09,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b4b9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:23:09, skipping insertion in model container [2020-09-25 13:23:09,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:23:09" (3/3) ... [2020-09-25 13:23:09,451 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_25-1.c [2020-09-25 13:23:09,465 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:23:09,477 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:23:09,505 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:23:09,564 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:23:09,564 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:23:09,564 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:23:09,564 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:23:09,565 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:23:09,565 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:23:09,565 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:23:09,565 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:23:09,595 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 13:23:09,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 13:23:09,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:09,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:09,604 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:09,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:09,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 13:23:09,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:09,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1773729597] [2020-09-25 13:23:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:09,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:09,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:09,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:23:09,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:09,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 13:23:09,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:09,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:23:09,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:09,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:23:10,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:10,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:10,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:10,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:10,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:10,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:10,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:10,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:10,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:10,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:10,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:10,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:10,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:10,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:10,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:10,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:10,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:10,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:23:10,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:10,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:10,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:23:10,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:10,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:23:10,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:10,140 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 13:23:10,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1773729597] [2020-09-25 13:23:10,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:10,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:23:10,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561514351] [2020-09-25 13:23:10,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:23:10,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:10,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:23:10,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:23:10,185 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 13:23:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:10,333 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 13:23:10,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:23:10,337 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 13:23:10,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:10,361 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:23:10,362 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 13:23:10,367 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 13:23:10,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 13:23:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 13:23:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:23:10,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:23:10,435 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 13:23:10,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:10,435 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:23:10,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:23:10,436 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:23:10,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 13:23:10,438 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:10,438 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 13:23:10,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:23:10,438 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:10,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:10,439 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 13:23:10,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:10,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369078724] [2020-09-25 13:23:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:10,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:10,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:10,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:10,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:23:10,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:10,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 13:23:10,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:10,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:10,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:10,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:10,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:10,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:10,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:10,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:10,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:10,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:10,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:10,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:10,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:10,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:10,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:10,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:10,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:10,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:10,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:10,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:23:10,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:10,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:10,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:10,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:10,742 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 13:23:10,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369078724] [2020-09-25 13:23:10,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:10,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:23:10,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270303249] [2020-09-25 13:23:10,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:23:10,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:10,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:23:10,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:23:10,746 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 13:23:10,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:10,814 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 13:23:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:23:10,815 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 13:23:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:10,817 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:23:10,817 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 13:23:10,819 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 13:23:10,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 13:23:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 13:23:10,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 13:23:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 13:23:10,829 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 13:23:10,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:10,830 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 13:23:10,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:23:10,830 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 13:23:10,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 13:23:10,832 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:10,833 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 13:23:10,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:23:10,833 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:10,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:10,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 13:23:10,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:10,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995214023] [2020-09-25 13:23:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:10,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:10,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:10,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:11,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:12,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 13:23:12,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:23:12,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1995 [2020-09-25 13:23:12,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:12,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:12,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:12,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:23:12,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:12,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:12,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:12,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:12,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:12,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:12,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:12,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:12,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:12,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:12,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:12,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:12,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:13,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:13,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:13,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 13:23:13,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:13,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:13,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:13,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:13,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:13,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:13,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:13,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:13,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:13,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:13,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:23:13,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:13,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:13,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:13,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:13,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:13,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:13,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:13,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:13,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:23:13,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:13,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:13,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:13,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:13,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:13,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:13,216 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 13:23:13,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995214023] [2020-09-25 13:23:13,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:23:13,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:23:13,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976599766] [2020-09-25 13:23:13,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:13,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:13,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:13,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:13,221 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 13:23:13,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:13,358 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 13:23:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:13,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 13:23:13,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:13,361 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:23:13,362 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 13:23:13,363 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 13:23:13,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 13:23:13,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 13:23:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 13:23:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 13:23:13,374 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 13:23:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:13,374 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 13:23:13,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:13,375 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 13:23:13,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 13:23:13,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:13,377 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 13:23:13,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:23:13,377 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:13,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:13,378 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 13:23:13,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:13,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419035613] [2020-09-25 13:23:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:13,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:13,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 13:23:15,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:23:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1756 [2020-09-25 13:23:15,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 13:23:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:23:15,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:15,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:15,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:15,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:15,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:15,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:15,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:23:15,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:15,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 13:23:15,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:23:15,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:15,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:15,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:15,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:23:15,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:15,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:15,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:15,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:15,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:15,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:15,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:15,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 13:23:15,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:15,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:15,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:15,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:15,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:15,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:15,369 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 13:23:15,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419035613] [2020-09-25 13:23:15,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:15,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:23:15,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687019890] [2020-09-25 13:23:15,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:15,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:15,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:15,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:15,372 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 13:23:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:15,490 INFO L93 Difference]: Finished difference Result 104 states and 138 transitions. [2020-09-25 13:23:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:23:15,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 13:23:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:15,493 INFO L225 Difference]: With dead ends: 104 [2020-09-25 13:23:15,494 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 13:23:15,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:15,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 13:23:15,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-25 13:23:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:23:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 13:23:15,507 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 35 [2020-09-25 13:23:15,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:15,508 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 13:23:15,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:15,508 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 13:23:15,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:23:15,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:15,511 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 13:23:15,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:23:15,512 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:15,512 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 13:23:15,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:15,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342287744] [2020-09-25 13:23:15,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:15,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:15,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:19,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:20,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 13:23:20,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:23:20,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:23:20,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:20,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:20,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 13:23:20,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:20,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:20,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:20,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:20,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:20,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:20,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:20,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:20,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:20,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:20,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:20,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:20,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:20,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:20,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:21,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:21,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:21,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 13:23:24,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:23:24,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4201 [2020-09-25 13:23:24,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:24,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:24,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:24,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:24,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:24,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:23:24,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:24,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:24,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-25 13:23:24,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:24,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:24,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:24,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:24,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:24,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:24,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:24,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:24,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:24,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:24,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:24,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:24,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:24,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:24,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:24,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:24,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:24,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:24,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:24,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:24,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:24,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:24,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:24,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:24,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:23:24,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:24,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:24,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:24,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:24,976 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 13:23:24,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342287744] [2020-09-25 13:23:24,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:24,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:23:24,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387024890] [2020-09-25 13:23:24,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:23:24,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:24,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:23:24,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:23:24,980 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 7 states. [2020-09-25 13:23:25,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:25,148 INFO L93 Difference]: Finished difference Result 72 states and 87 transitions. [2020-09-25 13:23:25,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:23:25,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 13:23:25,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:25,151 INFO L225 Difference]: With dead ends: 72 [2020-09-25 13:23:25,151 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 13:23:25,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 13:23:25,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 13:23:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 13:23:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 67 transitions. [2020-09-25 13:23:25,164 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 67 transitions. Word has length 51 [2020-09-25 13:23:25,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:25,164 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 67 transitions. [2020-09-25 13:23:25,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:23:25,165 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 67 transitions. [2020-09-25 13:23:25,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 13:23:25,167 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:25,168 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 13:23:25,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:23:25,168 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:25,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:25,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 13:23:25,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:25,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905660793] [2020-09-25 13:23:25,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:25,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:26,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:30,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:30,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:23:30,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:23:30,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:23:30,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:30,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:30,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:23:30,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:30,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:30,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:30,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:30,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:30,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:30,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:30,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:30,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:30,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:30,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:30,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:30,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:30,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:30,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:30,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:30,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:30,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:32,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:32,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:35,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 13:23:35,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:23:35,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:23:35,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:35,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:35,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:35,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:23:35,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:23:35,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:35,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:35,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:35,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:35,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 13:23:35,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:35,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:35,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:35,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:35,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:35,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:35,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:35,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:35,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:35,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:35,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:23:35,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:35,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:35,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:35,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:35,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:35,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:35,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:23:35,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:35,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:35,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:35,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:35,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:35,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:35,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:35,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:35,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 13:23:35,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:35,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:35,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:35,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:35,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:35,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:35,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:35,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:35,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:23:35,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:35,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:35,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:35,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:35,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:35,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:35,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:35,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:35,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:35,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:23:35,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:35,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:35,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:35,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:35,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 13:23:35,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905660793] [2020-09-25 13:23:35,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:35,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:23:35,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585454719] [2020-09-25 13:23:35,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:23:35,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:35,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:23:35,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:23:35,609 INFO L87 Difference]: Start difference. First operand 54 states and 67 transitions. Second operand 10 states. [2020-09-25 13:23:35,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:35,889 INFO L93 Difference]: Finished difference Result 125 states and 169 transitions. [2020-09-25 13:23:35,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:23:35,890 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 13:23:35,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:35,892 INFO L225 Difference]: With dead ends: 125 [2020-09-25 13:23:35,892 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 13:23:35,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:23:35,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 13:23:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-09-25 13:23:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 13:23:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2020-09-25 13:23:35,905 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 67 [2020-09-25 13:23:35,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:35,905 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2020-09-25 13:23:35,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:23:35,905 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2020-09-25 13:23:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:23:35,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:35,907 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 13:23:35,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:23:35,908 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:35,908 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 13:23:35,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:35,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916597956] [2020-09-25 13:23:35,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:35,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:35,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:36,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:37,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:38,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:38,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:40,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 13:23:40,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:23:40,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:23:40,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:40,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:40,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:40,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:40,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:40,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:40,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:40,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:23:40,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:40,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:40,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:40,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:40,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:40,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:40,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:41,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:45,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:45,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:23:45,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:23:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:23:45,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:45,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 13:23:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:45,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:46,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:46,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:46,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 13:23:46,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:46,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:46,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:23:46,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:46,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:46,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:46,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:46,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:23:46,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:46,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:46,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:46,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:46,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:23:46,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:46,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:46,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:46,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:23:46,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:46,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:46,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:46,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:46,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:46,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:23:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:46,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:23:46,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:23:46,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 13:23:46,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:46,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:23:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:46,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:23:46,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:46,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:46,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:23:46,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:46,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:23:46,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:46,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:46,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:46,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:46,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:46,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:46,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:23:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:46,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:46,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:46,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:23:46,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:46,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:46,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:46,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:46,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 13:23:46,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [916597956] [2020-09-25 13:23:46,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:46,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:23:46,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219950912] [2020-09-25 13:23:46,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:23:46,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:46,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:23:46,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:23:46,588 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 9 states. [2020-09-25 13:23:46,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:46,850 INFO L93 Difference]: Finished difference Result 144 states and 192 transitions. [2020-09-25 13:23:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:23:46,853 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 13:23:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:46,858 INFO L225 Difference]: With dead ends: 144 [2020-09-25 13:23:46,858 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 13:23:46,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:23:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 13:23:46,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-09-25 13:23:46,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 13:23:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 104 transitions. [2020-09-25 13:23:46,887 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 104 transitions. Word has length 69 [2020-09-25 13:23:46,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:46,888 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 104 transitions. [2020-09-25 13:23:46,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:23:46,888 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 104 transitions. [2020-09-25 13:23:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 13:23:46,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:46,893 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:46,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:23:46,894 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:46,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:46,894 INFO L82 PathProgramCache]: Analyzing trace with hash -659479355, now seen corresponding path program 1 times [2020-09-25 13:23:46,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:46,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277475807] [2020-09-25 13:23:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:46,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:47,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:48,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:51,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-09-25 13:23:51,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 13:23:51,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:23:51,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:51,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:23:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:23:51,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 13:23:51,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:51,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:23:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:51,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:51,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:23:51,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:51,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:51,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:51,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:51,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:51,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:51,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:51,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:23:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:51,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:51,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:53,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:54,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:54,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:54,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:55,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:56,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 13:23:56,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 13:23:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:23:56,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:56,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:23:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:23:56,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:23:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:56,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:56,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:56,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:57,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:23:57,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:23:57,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-09-25 13:23:57,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:57,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:23:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:23:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:57,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:57,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:57,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:57,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:57,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 13:23:57,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:57,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:57,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:57,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:57,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:57,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:57,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:57,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:57,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:57,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:57,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:23:57,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:57,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:57,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:57,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:57,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:57,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:57,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:57,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:57,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:23:57,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:57,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:23:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:57,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:23:57,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:23:57,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:23:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:57,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:57,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:57,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:57,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:23:57,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:57,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:57,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:23:57,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:58,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 13:23:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:23:58,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:23:58,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 13:23:58,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:23:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:23:58,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:23:58,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:58,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:23:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:58,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:58,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:23:58,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:58,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:58,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:23:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:23:58,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:23:58,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:23:58,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:23:58,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:23:58,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:23:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:23:58,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:23:58,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:23:58,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:23:58,182 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 21 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 13:23:58,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277475807] [2020-09-25 13:23:58,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:23:58,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:23:58,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853402849] [2020-09-25 13:23:58,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:23:58,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:23:58,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:23:58,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:23:58,184 INFO L87 Difference]: Start difference. First operand 84 states and 104 transitions. Second operand 11 states. [2020-09-25 13:23:58,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:23:58,721 INFO L93 Difference]: Finished difference Result 213 states and 316 transitions. [2020-09-25 13:23:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:23:58,722 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-09-25 13:23:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:23:58,725 INFO L225 Difference]: With dead ends: 213 [2020-09-25 13:23:58,725 INFO L226 Difference]: Without dead ends: 105 [2020-09-25 13:23:58,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:23:58,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-25 13:23:58,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2020-09-25 13:23:58,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 13:23:58,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2020-09-25 13:23:58,741 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 84 [2020-09-25 13:23:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:23:58,741 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2020-09-25 13:23:58,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:23:58,742 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2020-09-25 13:23:58,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 13:23:58,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:23:58,744 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:23:58,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:23:58,744 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:23:58,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:23:58,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1641825993, now seen corresponding path program 1 times [2020-09-25 13:23:58,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:23:58,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399672378] [2020-09-25 13:23:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:23:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:23:58,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:58,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:23:59,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking...