/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:09:45,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:09:45,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:09:45,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:09:45,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:09:45,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:09:45,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:09:45,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:09:45,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:09:45,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:09:45,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:09:45,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:09:45,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:09:45,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:09:45,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:09:46,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:09:46,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:09:46,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:09:46,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:09:46,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:09:46,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:09:46,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:09:46,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:09:46,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:09:46,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:09:46,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:09:46,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:09:46,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:09:46,033 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:09:46,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:09:46,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:09:46,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:09:46,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:09:46,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:09:46,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:09:46,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:09:46,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:09:46,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:09:46,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:09:46,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:09:46,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:09:46,041 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 [2020-10-15 02:09:46,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:09:46,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:09:46,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:09:46,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:09:46,074 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:09:46,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:09:46,074 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:09:46,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:09:46,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:09:46,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:09:46,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:09:46,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:09:46,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:09:46,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:09:46,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:09:46,076 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:09:46,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:09:46,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:09:46,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:09:46,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:09:46,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:09:46,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:09:46,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:09:46,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:09:46,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:09:46,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:09:46,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:09:46,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:09:46,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:09:46,079 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:09:46,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:09:46,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:09:46,439 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:09:46,440 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:09:46,442 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:09:46,443 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-10-15 02:09:46,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e421eac5d/b2bedfac1c6c4c9ba3b81a0083ed35a3/FLAG937b5a8b1 [2020-10-15 02:09:46,950 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:09:46,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id2_i5_o5-2.c [2020-10-15 02:09:46,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e421eac5d/b2bedfac1c6c4c9ba3b81a0083ed35a3/FLAG937b5a8b1 [2020-10-15 02:09:47,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e421eac5d/b2bedfac1c6c4c9ba3b81a0083ed35a3 [2020-10-15 02:09:47,321 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:09:47,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:09:47,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:09:47,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:09:47,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:09:47,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:09:47" (1/1) ... [2020-10-15 02:09:47,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b2844f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:47, skipping insertion in model container [2020-10-15 02:09:47,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:09:47" (1/1) ... [2020-10-15 02:09:47,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:09:47,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:09:47,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:09:47,596 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:09:47,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:09:47,629 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:09:47,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:47 WrapperNode [2020-10-15 02:09:47,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:09:47,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:09:47,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:09:47,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:09:47,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:47" (1/1) ... [2020-10-15 02:09:47,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:47" (1/1) ... [2020-10-15 02:09:47,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:47" (1/1) ... [2020-10-15 02:09:47,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:47" (1/1) ... [2020-10-15 02:09:47,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:47" (1/1) ... [2020-10-15 02:09:47,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:47" (1/1) ... [2020-10-15 02:09:47,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:47" (1/1) ... [2020-10-15 02:09:47,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:09:47,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:09:47,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:09:47,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:09:47,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:47" (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 [2020-10-15 02:09:47,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:09:47,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:09:47,809 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-15 02:09:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2020-10-15 02:09:47,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:09:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:09:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:09:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-15 02:09:47,810 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2020-10-15 02:09:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:09:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:09:47,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:09:47,975 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:09:47,975 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:09:47,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:09:47 BoogieIcfgContainer [2020-10-15 02:09:47,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:09:47,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:09:47,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:09:47,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:09:47,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:09:47" (1/3) ... [2020-10-15 02:09:47,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49db5b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:09:47, skipping insertion in model container [2020-10-15 02:09:47,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:47" (2/3) ... [2020-10-15 02:09:47,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49db5b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:09:47, skipping insertion in model container [2020-10-15 02:09:47,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:09:47" (3/3) ... [2020-10-15 02:09:47,988 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2020-10-15 02:09:48,000 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:09:48,007 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:09:48,021 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:09:48,046 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:09:48,046 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:09:48,046 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:09:48,046 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:09:48,046 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:09:48,047 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:09:48,047 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:09:48,047 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:09:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-15 02:09:48,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 02:09:48,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:48,069 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:48,069 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:48,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:48,074 INFO L82 PathProgramCache]: Analyzing trace with hash -550894517, now seen corresponding path program 1 times [2020-10-15 02:09:48,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:48,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445272611] [2020-10-15 02:09:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:48,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:48,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:48,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 02:09:48,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:48,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-15 02:09:48,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:48,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:48,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:09:48,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 02:09:48,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:09:48,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:09:48,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:48,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:48,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:48,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:48,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:48,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:09:48,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:48,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:48,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 02:09:48,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:48,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:48,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:48,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:48,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:48,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 02:09:48,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:48,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:09:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:48,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:09:48,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:09:48,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445272611] [2020-10-15 02:09:48,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:09:48,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:09:48,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197254483] [2020-10-15 02:09:48,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:09:48,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:48,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:09:48,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:09:48,444 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2020-10-15 02:09:48,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:48,541 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-15 02:09:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:09:48,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 02:09:48,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:48,557 INFO L225 Difference]: With dead ends: 36 [2020-10-15 02:09:48,557 INFO L226 Difference]: Without dead ends: 24 [2020-10-15 02:09:48,562 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 [2020-10-15 02:09:48,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-15 02:09:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-15 02:09:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-15 02:09:48,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-15 02:09:48,646 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 13 [2020-10-15 02:09:48,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:48,646 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-15 02:09:48,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:09:48,647 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-15 02:09:48,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 02:09:48,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:48,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:48,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:09:48,650 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:48,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:48,650 INFO L82 PathProgramCache]: Analyzing trace with hash 40504409, now seen corresponding path program 1 times [2020-10-15 02:09:48,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:48,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539282129] [2020-10-15 02:09:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:48,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:48,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:48,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-15 02:09:48,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:48,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-15 02:09:48,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:48,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:48,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:09:48,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 02:09:48,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 02:09:48,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:48,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:48,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:48,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:48,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:48,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:09:48,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:48,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:48,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:48,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:09:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:48,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:48,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 02:09:48,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:48,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-15 02:09:48,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:48,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:09:48,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:48,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 02:09:48,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:48,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:49,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:49,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:49,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:49,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:49,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 02:09:49,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:49,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:49,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:09:49,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539282129] [2020-10-15 02:09:49,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:09:49,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 02:09:49,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043350584] [2020-10-15 02:09:49,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 02:09:49,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:49,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 02:09:49,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:09:49,050 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2020-10-15 02:09:49,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:49,132 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-10-15 02:09:49,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:09:49,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-15 02:09:49,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:49,135 INFO L225 Difference]: With dead ends: 33 [2020-10-15 02:09:49,135 INFO L226 Difference]: Without dead ends: 29 [2020-10-15 02:09:49,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:09:49,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-15 02:09:49,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-10-15 02:09:49,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-15 02:09:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-10-15 02:09:49,145 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2020-10-15 02:09:49,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:49,145 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-10-15 02:09:49,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 02:09:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-10-15 02:09:49,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-15 02:09:49,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:49,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:49,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:09:49,148 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:49,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:49,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1029702107, now seen corresponding path program 1 times [2020-10-15 02:09:49,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:49,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833253377] [2020-10-15 02:09:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:49,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:49,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 02:09:49,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-15 02:09:49,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:49,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:09:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 02:09:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 02:09:49,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:49,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:49,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:49,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:49,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:49,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:49,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:49,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:49,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:49,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:49,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:49,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:49,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:49,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:49,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:49,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:49,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:09:49,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:49,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 02:09:49,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:49,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:09:49,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:49,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 02:09:49,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:49,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:49,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:49,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 02:09:49,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:49,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-15 02:09:49,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:49,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:49,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:09:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:49,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:09:49,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:49,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:49,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:49,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:49,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:49,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:49,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:09:49,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:49,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:49,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:49,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:49,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 02:09:49,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833253377] [2020-10-15 02:09:49,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:09:49,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-15 02:09:49,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49161819] [2020-10-15 02:09:49,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 02:09:49,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:49,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 02:09:49,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:09:49,531 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2020-10-15 02:09:49,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:49,613 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-10-15 02:09:49,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 02:09:49,614 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-10-15 02:09:49,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:49,616 INFO L225 Difference]: With dead ends: 39 [2020-10-15 02:09:49,616 INFO L226 Difference]: Without dead ends: 35 [2020-10-15 02:09:49,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:09:49,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-15 02:09:49,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2020-10-15 02:09:49,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-15 02:09:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-15 02:09:49,625 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 25 [2020-10-15 02:09:49,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:49,625 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-15 02:09:49,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 02:09:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-15 02:09:49,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-15 02:09:49,627 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:49,627 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:49,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:09:49,627 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:49,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:49,628 INFO L82 PathProgramCache]: Analyzing trace with hash -559715991, now seen corresponding path program 1 times [2020-10-15 02:09:49,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:49,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616899783] [2020-10-15 02:09:49,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:49,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:49,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:49,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-15 02:09:49,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:49,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-15 02:09:49,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:49,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:09:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 02:09:49,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 02:09:49,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:49,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:49,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:49,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:49,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:49,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:49,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:09:49,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:49,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:49,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:49,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:49,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:49,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:49,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 02:09:49,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:49,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-15 02:09:49,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:49,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:49,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:09:49,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:49,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 02:09:49,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:49,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:49,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:49,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:49,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:09:49,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-15 02:09:49,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:49,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:09:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:49,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:09:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:49,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:49,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 02:09:49,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:49,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 02:09:49,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:49,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:49,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:09:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:09:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:49,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:49,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:49,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:49,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:09:49,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:49,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:49,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:50,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 02:09:50,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616899783] [2020-10-15 02:09:50,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:09:50,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:09:50,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631648599] [2020-10-15 02:09:50,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:09:50,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:50,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:09:50,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:09:50,044 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 11 states. [2020-10-15 02:09:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:50,229 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-10-15 02:09:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 02:09:50,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-15 02:09:50,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:50,237 INFO L225 Difference]: With dead ends: 45 [2020-10-15 02:09:50,237 INFO L226 Difference]: Without dead ends: 41 [2020-10-15 02:09:50,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:09:50,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-15 02:09:50,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2020-10-15 02:09:50,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 02:09:50,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-10-15 02:09:50,252 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 31 [2020-10-15 02:09:50,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:50,252 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-10-15 02:09:50,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:09:50,253 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-10-15 02:09:50,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-15 02:09:50,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:50,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:50,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:09:50,256 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:50,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:50,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2003326827, now seen corresponding path program 2 times [2020-10-15 02:09:50,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:50,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324577328] [2020-10-15 02:09:50,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:50,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:50,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-15 02:09:50,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:50,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-15 02:09:50,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:50,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:50,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:09:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 02:09:50,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:09:50,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:50,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:50,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:50,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:50,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:09:50,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:50,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:50,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:50,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:50,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:50,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:50,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 02:09:50,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:50,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-15 02:09:50,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:50,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:09:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:50,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 02:09:50,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:50,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:50,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 02:09:50,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-15 02:09:50,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:50,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:50,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:09:50,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:50,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 02:09:50,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:50,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:50,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:50,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:09:50,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:50,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-15 02:09:50,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:50,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:09:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:09:50,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:50,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:50,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:50,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 02:09:50,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:50,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 02:09:50,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:50,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:09:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:09:50,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:50,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:50,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:50,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:50,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:50,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:09:50,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:50,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:50,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:50,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:50,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:50,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-15 02:09:50,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324577328] [2020-10-15 02:09:50,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:09:50,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-15 02:09:50,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759015972] [2020-10-15 02:09:50,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 02:09:50,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:50,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 02:09:50,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-15 02:09:50,888 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2020-10-15 02:09:50,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:50,999 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-10-15 02:09:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:09:51,000 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-10-15 02:09:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:51,001 INFO L225 Difference]: With dead ends: 51 [2020-10-15 02:09:51,002 INFO L226 Difference]: Without dead ends: 47 [2020-10-15 02:09:51,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:09:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-15 02:09:51,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2020-10-15 02:09:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-15 02:09:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-15 02:09:51,011 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 37 [2020-10-15 02:09:51,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:51,011 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-15 02:09:51,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 02:09:51,011 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-15 02:09:51,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 02:09:51,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:51,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:51,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:09:51,013 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:51,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:51,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1197899385, now seen corresponding path program 2 times [2020-10-15 02:09:51,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:51,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826621644] [2020-10-15 02:09:51,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:51,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-15 02:09:51,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:51,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-15 02:09:51,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:51,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:09:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-15 02:09:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:09:51,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:51,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:51,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:51,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:51,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:51,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:51,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:51,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:51,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 02:09:51,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:51,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-15 02:09:51,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:51,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:09:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:51,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-15 02:09:51,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:51,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:51,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 02:09:51,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-15 02:09:51,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:51,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:51,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:09:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:51,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 02:09:51,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:51,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:51,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:51,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 02:09:51,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-15 02:09:51,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:51,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:51,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:09:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:51,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-15 02:09:51,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:09:51,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:51,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:09:51,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:51,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 02:09:51,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:51,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:51,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:09:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:51,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 02:09:51,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:09:51,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:51,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:51,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:51,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 02:09:51,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:51,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 02:09:51,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:51,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:51,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:51,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 02:09:51,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:51,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:51,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:51,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:51,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:51,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:09:51,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:51,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:51,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:09:51,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:51,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:09:51,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:51,866 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-15 02:09:51,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826621644] [2020-10-15 02:09:51,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:09:51,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-15 02:09:51,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117261024] [2020-10-15 02:09:51,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 02:09:51,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:51,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 02:09:51,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:09:51,869 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 15 states. [2020-10-15 02:09:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:51,972 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-10-15 02:09:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 02:09:51,973 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-15 02:09:51,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:51,975 INFO L225 Difference]: With dead ends: 57 [2020-10-15 02:09:51,975 INFO L226 Difference]: Without dead ends: 53 [2020-10-15 02:09:51,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-15 02:09:51,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-15 02:09:51,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2020-10-15 02:09:51,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-15 02:09:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-10-15 02:09:51,984 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2020-10-15 02:09:51,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:51,984 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-10-15 02:09:51,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 02:09:51,985 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-10-15 02:09:51,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 02:09:51,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:51,986 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:51,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:09:51,987 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:51,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:51,987 INFO L82 PathProgramCache]: Analyzing trace with hash 706413819, now seen corresponding path program 3 times [2020-10-15 02:09:51,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:51,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87810143] [2020-10-15 02:09:51,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:52,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:52,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 02:09:52,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:52,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-15 02:09:52,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:52,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:09:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 02:09:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 02:09:52,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:52,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:52,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:52,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:52,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:52,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:52,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:52,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:52,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:52,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:52,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:52,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:52,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 02:09:52,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-15 02:09:52,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:52,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-15 02:09:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 02:09:52,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:52,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:53,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:53,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-15 02:09:53,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:53,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-15 02:09:53,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:53,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-15 02:09:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 02:09:53,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:53,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:53,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:53,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:53,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:53,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-15 02:09:53,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:53,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-15 02:09:53,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:53,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-15 02:09:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-15 02:09:53,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:53,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:53,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:53,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:53,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:53,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-15 02:09:53,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:53,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-15 02:09:53,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:53,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-15 02:09:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:53,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 02:09:53,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:53,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:53,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:53,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:53,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-15 02:09:53,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:53,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 02:09:53,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:53,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:53,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:09:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:53,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:09:53,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:53,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:53,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:53,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:53,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:53,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-15 02:09:53,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:53,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-15 02:09:53,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:53,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:53,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 02:09:53,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:53,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 02:09:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:53,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:53,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:53,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:53,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:53,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:09:53,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:53,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:53,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:09:53,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:53,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:09:53,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:09:53,609 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-15 02:09:53,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87810143] [2020-10-15 02:09:53,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:09:53,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-15 02:09:53,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943789574] [2020-10-15 02:09:53,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 02:09:53,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:53,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 02:09:53,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:09:53,613 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 12 states. [2020-10-15 02:09:54,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:54,090 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2020-10-15 02:09:54,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 02:09:54,090 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2020-10-15 02:09:54,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:54,091 INFO L225 Difference]: With dead ends: 75 [2020-10-15 02:09:54,091 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 02:09:54,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2020-10-15 02:09:54,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 02:09:54,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 02:09:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 02:09:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 02:09:54,094 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-10-15 02:09:54,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:54,094 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 02:09:54,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 02:09:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 02:09:54,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 02:09:54,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:09:54,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-15 02:09:54,209 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-15 02:09:54,209 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-15 02:09:54,209 INFO L264 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (and (= id2_~x |id2_#in~x|) (or (<= (+ |id2_#in~x| 1) 0) (<= 1 |id2_#in~x|))) [2020-10-15 02:09:54,209 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-10-15 02:09:54,210 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-10-15 02:09:54,210 INFO L268 CegarLoopResult]: For program point id2EXIT(lines 12 15) no Hoare annotation was computed. [2020-10-15 02:09:54,210 INFO L271 CegarLoopResult]: At program point id2ENTRY(lines 12 15) the Hoare annotation is: true [2020-10-15 02:09:54,210 INFO L268 CegarLoopResult]: For program point id2FINAL(lines 12 15) no Hoare annotation was computed. [2020-10-15 02:09:54,210 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-15 02:09:54,210 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-15 02:09:54,210 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-15 02:09:54,211 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-15 02:09:54,211 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-10-15 02:09:54,211 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 23) the Hoare annotation is: true [2020-10-15 02:09:54,211 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 23) no Hoare annotation was computed. [2020-10-15 02:09:54,211 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-10-15 02:09:54,211 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-10-15 02:09:54,212 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= 5 main_~input~0) [2020-10-15 02:09:54,212 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-15 02:09:54,212 INFO L268 CegarLoopResult]: For program point L20-2(lines 17 23) no Hoare annotation was computed. [2020-10-15 02:09:54,212 INFO L268 CegarLoopResult]: For program point idFINAL(lines 7 10) no Hoare annotation was computed. [2020-10-15 02:09:54,212 INFO L268 CegarLoopResult]: For program point idEXIT(lines 7 10) no Hoare annotation was computed. [2020-10-15 02:09:54,212 INFO L264 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: (and (<= id_~x |id_#in~x|) (<= |id_#in~x| id_~x)) [2020-10-15 02:09:54,213 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-10-15 02:09:54,213 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-10-15 02:09:54,213 INFO L271 CegarLoopResult]: At program point idENTRY(lines 7 10) the Hoare annotation is: true [2020-10-15 02:09:54,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:09:54 BoogieIcfgContainer [2020-10-15 02:09:54,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 02:09:54,222 INFO L168 Benchmark]: Toolchain (without parser) took 6899.10 ms. Allocated memory was 147.8 MB in the beginning and 299.9 MB in the end (delta: 152.0 MB). Free memory was 104.1 MB in the beginning and 227.0 MB in the end (delta: -122.9 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:54,223 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-15 02:09:54,224 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.85 ms. Allocated memory is still 147.8 MB. Free memory was 103.7 MB in the beginning and 94.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:54,225 INFO L168 Benchmark]: Boogie Preprocessor took 112.85 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 94.3 MB in the beginning and 183.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:54,226 INFO L168 Benchmark]: RCFGBuilder took 235.81 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 170.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:54,227 INFO L168 Benchmark]: TraceAbstraction took 6238.46 ms. Allocated memory was 204.5 MB in the beginning and 299.9 MB in the end (delta: 95.4 MB). Free memory was 170.8 MB in the beginning and 227.0 MB in the end (delta: -56.3 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:54,231 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.85 ms. Allocated memory is still 147.8 MB. Free memory was 103.7 MB in the beginning and 94.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.85 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 94.3 MB in the beginning and 183.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 235.81 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 170.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6238.46 ms. Allocated memory was 204.5 MB in the beginning and 299.9 MB in the end (delta: 95.4 MB). Free memory was 170.8 MB in the beginning and 227.0 MB in the end (delta: -56.3 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 146 SDtfs, 125 SDslu, 923 SDs, 0 SdLazy, 487 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 29 HoareAnnotationTreeSize, 17 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 189 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 217 NumberOfCodeBlocks, 217 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 25242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 53/114 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...