/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/array-crafted/mapsum5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:18:32,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:18:32,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:18:33,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:18:33,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:18:33,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:18:33,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:18:33,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:18:33,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:18:33,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:18:33,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:18:33,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:18:33,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:18:33,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:18:33,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:18:33,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:18:33,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:18:33,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:18:33,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:18:33,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:18:33,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:18:33,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:18:33,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:18:33,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:18:33,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:18:33,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:18:33,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:18:33,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:18:33,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:18:33,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:18:33,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:18:33,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:18:33,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:18:33,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:18:33,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:18:33,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:18:33,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:18:33,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:18:33,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:18:33,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:18:33,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:18:33,091 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 [2020-10-13 23:18:33,139 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:18:33,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:18:33,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:18:33,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:18:33,141 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:18:33,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:18:33,142 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:18:33,142 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:18:33,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:18:33,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:18:33,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:18:33,143 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:18:33,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:18:33,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:18:33,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:18:33,144 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:18:33,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:18:33,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:18:33,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:18:33,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:18:33,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:18:33,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:18:33,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:18:33,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:18:33,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:18:33,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:18:33,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:18:33,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:18:33,147 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:18:33,148 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-13 23:18:33,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:18:33,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:18:33,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:18:33,462 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:18:33,462 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:18:33,463 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum5.i [2020-10-13 23:18:33,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a7795652/d5b08731e49b48c88f3cfd9309656def/FLAG87fc8587a [2020-10-13 23:18:33,896 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:18:33,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/mapsum5.i [2020-10-13 23:18:33,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a7795652/d5b08731e49b48c88f3cfd9309656def/FLAG87fc8587a [2020-10-13 23:18:34,276 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a7795652/d5b08731e49b48c88f3cfd9309656def [2020-10-13 23:18:34,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:18:34,286 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:18:34,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:18:34,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:18:34,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:18:34,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:34" (1/1) ... [2020-10-13 23:18:34,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf49487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:34, skipping insertion in model container [2020-10-13 23:18:34,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:34" (1/1) ... [2020-10-13 23:18:34,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:18:34,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:18:34,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:18:34,571 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:18:34,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:18:34,638 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:18:34,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:34 WrapperNode [2020-10-13 23:18:34,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:18:34,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:18:34,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:18:34,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:18:34,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:34" (1/1) ... [2020-10-13 23:18:34,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:34" (1/1) ... [2020-10-13 23:18:34,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:34" (1/1) ... [2020-10-13 23:18:34,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:34" (1/1) ... [2020-10-13 23:18:34,824 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:34" (1/1) ... [2020-10-13 23:18:34,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:34" (1/1) ... [2020-10-13 23:18:34,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:34" (1/1) ... [2020-10-13 23:18:34,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:18:34,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:18:34,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:18:34,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:18:34,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:34" (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 [2020-10-13 23:18:34,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:18:34,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:18:34,922 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2020-10-13 23:18:34,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:18:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:18:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:18:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2020-10-13 23:18:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:18:34,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:18:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:18:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:18:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:18:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:18:34,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:18:35,229 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:18:35,230 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:18:35,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:35 BoogieIcfgContainer [2020-10-13 23:18:35,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:18:35,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:18:35,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:18:35,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:18:35,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:18:34" (1/3) ... [2020-10-13 23:18:35,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c7882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:35, skipping insertion in model container [2020-10-13 23:18:35,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:34" (2/3) ... [2020-10-13 23:18:35,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c6c7882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:35, skipping insertion in model container [2020-10-13 23:18:35,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:35" (3/3) ... [2020-10-13 23:18:35,246 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum5.i [2020-10-13 23:18:35,260 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:18:35,272 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:18:35,301 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:18:35,349 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:18:35,349 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:18:35,349 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:18:35,349 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:18:35,349 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:18:35,354 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:18:35,354 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:18:35,354 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:18:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-13 23:18:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 23:18:35,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:35,387 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:35,387 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:35,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:35,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1089041636, now seen corresponding path program 1 times [2020-10-13 23:18:35,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:35,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080438640] [2020-10-13 23:18:35,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:35,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:35,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:36,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:36,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:37,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 23:18:37,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:18:37,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1705 [2020-10-13 23:18:37,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:37,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-13 23:18:37,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:37,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:18:37,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:37,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:37,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:37,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:37,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:18:37,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:37,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:37,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:37,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:37,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:37,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 23:18:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:37,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:37,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:37,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:37,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:18:37,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:37,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:37,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:37,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:37,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:18:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:37,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:37,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:37,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:37,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:18:37,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:37,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:37,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:37,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 23:18:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:37,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:37,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:37,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:37,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:18:37,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:37,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:18:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:37,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:18:37,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080438640] [2020-10-13 23:18:37,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:18:37,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:18:37,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613414792] [2020-10-13 23:18:37,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:18:37,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:37,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:18:37,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:18:37,376 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-13 23:18:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:37,579 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2020-10-13 23:18:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:18:37,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-13 23:18:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:37,593 INFO L225 Difference]: With dead ends: 57 [2020-10-13 23:18:37,593 INFO L226 Difference]: Without dead ends: 27 [2020-10-13 23:18:37,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:18:37,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-13 23:18:37,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-13 23:18:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-13 23:18:37,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-13 23:18:37,675 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2020-10-13 23:18:37,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:37,675 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-13 23:18:37,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:18:37,676 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-13 23:18:37,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-13 23:18:37,679 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:37,680 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:37,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:18:37,681 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:37,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:37,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1200270940, now seen corresponding path program 1 times [2020-10-13 23:18:37,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:37,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426067188] [2020-10-13 23:18:37,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:38,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:38,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:38,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-13 23:18:38,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:18:38,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-10-13 23:18:38,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:38,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:18:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:18:38,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:18:38,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:38,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:38,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:38,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:38,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:38,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:38,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:18:38,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:38,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:38,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:38,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-13 23:18:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:38,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:38,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:38,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:38,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:38,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:18:38,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:38,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:38,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:18:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:38,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:39,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-13 23:18:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:39,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:39,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:18:39,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:18:39,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:39,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:39,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-13 23:18:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:39,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:39,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:39,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:18:39,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:39,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:39,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 23:18:39,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:39,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-13 23:18:39,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426067188] [2020-10-13 23:18:39,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:18:39,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:18:39,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671777444] [2020-10-13 23:18:39,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:18:39,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:39,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:18:39,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:18:39,037 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-13 23:18:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:39,114 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-10-13 23:18:39,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:18:39,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-13 23:18:39,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:39,115 INFO L225 Difference]: With dead ends: 47 [2020-10-13 23:18:39,116 INFO L226 Difference]: Without dead ends: 29 [2020-10-13 23:18:39,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:18:39,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-13 23:18:39,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-13 23:18:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-13 23:18:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-13 23:18:39,125 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2020-10-13 23:18:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:39,126 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-13 23:18:39,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:18:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-13 23:18:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 23:18:39,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:39,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:39,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:18:39,128 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:39,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:39,128 INFO L82 PathProgramCache]: Analyzing trace with hash 592534566, now seen corresponding path program 1 times [2020-10-13 23:18:39,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:39,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548555954] [2020-10-13 23:18:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:39,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:39,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:40,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:40,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-13 23:18:40,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:18:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1848 [2020-10-13 23:18:40,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:40,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:40,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:18:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:18:40,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 23:18:40,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:41,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:41,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:41,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:41,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:18:41,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:41,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:41,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:41,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:41,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 23:18:41,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:41,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:41,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:41,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:41,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:18:41,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:41,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:18:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:41,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 23:18:41,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:41,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-13 23:18:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:41,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:41,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:41,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:41,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:18:41,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:41,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:18:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:41,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 23:18:41,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:41,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-13 23:18:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:41,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:41,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 23:18:41,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:41,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 23:18:41,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:41,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:41,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:18:41,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:41,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:18:41,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-13 23:18:41,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548555954] [2020-10-13 23:18:41,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:18:41,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 23:18:41,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093110195] [2020-10-13 23:18:41,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:18:41,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:41,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:18:41,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:18:41,107 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-10-13 23:18:41,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:41,263 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-10-13 23:18:41,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:18:41,264 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-13 23:18:41,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:41,265 INFO L225 Difference]: With dead ends: 47 [2020-10-13 23:18:41,265 INFO L226 Difference]: Without dead ends: 30 [2020-10-13 23:18:41,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:18:41,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-13 23:18:41,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-13 23:18:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-13 23:18:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-13 23:18:41,274 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 35 [2020-10-13 23:18:41,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:41,275 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-13 23:18:41,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:18:41,275 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-13 23:18:41,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-13 23:18:41,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:41,277 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:41,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:18:41,277 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:41,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:41,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1450173220, now seen corresponding path program 1 times [2020-10-13 23:18:41,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:41,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367023803] [2020-10-13 23:18:41,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:41,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:46,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:46,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 23:18:46,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:18:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-13 23:18:46,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:46,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:18:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:18:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 23:18:46,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:18:46,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:46,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:46,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:46,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:46,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:46,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:18:46,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:46,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:46,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:46,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 23:18:46,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 23:18:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:46,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:46,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:46,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:46,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:46,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:46,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-13 23:18:46,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:46,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:46,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:18:46,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:46,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 23:18:46,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:46,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 23:18:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:46,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:46,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:46,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:46,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:46,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-13 23:18:46,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:46,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:46,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:18:46,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:46,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 23:18:46,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:46,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 23:18:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:46,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:46,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:46,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 23:18:46,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:46,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:18:46,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:46,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:18:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:18:46,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:18:46,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-13 23:18:46,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367023803] [2020-10-13 23:18:46,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:46,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:18:46,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753872043] [2020-10-13 23:18:46,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:18:46,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:46,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:18:46,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:18:46,503 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 7 states. [2020-10-13 23:18:46,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:46,732 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-10-13 23:18:46,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:18:46,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-10-13 23:18:46,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:46,734 INFO L225 Difference]: With dead ends: 50 [2020-10-13 23:18:46,734 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 23:18:46,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:18:46,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 23:18:46,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-10-13 23:18:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-13 23:18:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-13 23:18:46,742 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 41 [2020-10-13 23:18:46,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:46,742 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-13 23:18:46,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:18:46,743 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-13 23:18:46,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-13 23:18:46,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:46,744 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:46,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:18:46,745 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:46,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:46,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1166472098, now seen corresponding path program 2 times [2020-10-13 23:18:46,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:46,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094633106] [2020-10-13 23:18:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:46,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:46,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:46,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:46,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:47,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:49,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:49,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-13 23:18:49,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:18:49,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2888 [2020-10-13 23:18:49,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:49,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:18:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:18:49,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 23:18:49,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:49,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:49,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:49,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:49,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:49,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:49,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:18:49,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:49,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:49,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:49,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:49,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:49,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:49,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 23:18:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:49,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:49,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:49,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:49,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:18:49,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:49,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 23:18:49,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:49,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:18:49,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:49,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:18:49,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:49,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:18:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:49,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:49,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:49,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:49,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:18:49,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:18:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-13 23:18:49,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:49,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:18:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:49,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:18:49,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-13 23:18:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:49,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:49,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:18:49,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:49,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:18:49,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:49,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:49,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-13 23:18:49,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094633106] [2020-10-13 23:18:49,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:18:49,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 23:18:49,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85041579] [2020-10-13 23:18:49,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:18:49,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:49,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:18:49,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:18:49,804 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-10-13 23:18:49,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:49,918 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-13 23:18:49,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:18:49,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2020-10-13 23:18:49,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:49,919 INFO L225 Difference]: With dead ends: 47 [2020-10-13 23:18:49,920 INFO L226 Difference]: Without dead ends: 32 [2020-10-13 23:18:49,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:18:49,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-13 23:18:49,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-13 23:18:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-13 23:18:49,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-13 23:18:49,927 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 47 [2020-10-13 23:18:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:49,929 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-13 23:18:49,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:18:49,929 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-13 23:18:49,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-13 23:18:49,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:49,930 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:49,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:18:49,931 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:49,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:49,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1862345152, now seen corresponding path program 1 times [2020-10-13 23:18:49,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:49,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880718916] [2020-10-13 23:18:49,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:50,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:50,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:52,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:54,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:54,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-13 23:18:54,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:18:54,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:18:54,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:54,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:18:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:18:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-13 23:18:54,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:54,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:18:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:54,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:54,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:54,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:18:54,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:54,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:18:54,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:54,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:18:54,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:54,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:54,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-13 23:18:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:54,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:54,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:54,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:18:54,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:54,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:18:54,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:54,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:54,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:54,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:54,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:54,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:54,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 23:18:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:55,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:55,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:18:55,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:55,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-13 23:18:55,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:55,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:55,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:55,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:18:55,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-13 23:18:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:55,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:55,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:18:55,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:18:55,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:18:55,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:18:55,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:18:55,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:18:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:18:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:18:55,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:18:55,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:18:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-10-13 23:18:55,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880718916] [2020-10-13 23:18:55,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:18:55,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:18:55,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800125999] [2020-10-13 23:18:55,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:18:55,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:18:55,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:18:55,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:18:55,044 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 5 states. [2020-10-13 23:18:55,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:18:55,127 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-10-13 23:18:55,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:18:55,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-13 23:18:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:18:55,129 INFO L225 Difference]: With dead ends: 56 [2020-10-13 23:18:55,129 INFO L226 Difference]: Without dead ends: 34 [2020-10-13 23:18:55,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:18:55,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-13 23:18:55,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-13 23:18:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-13 23:18:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-13 23:18:55,136 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 49 [2020-10-13 23:18:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:18:55,136 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-13 23:18:55,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:18:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-13 23:18:55,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 23:18:55,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:18:55,138 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:18:55,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:18:55,138 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:18:55,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:18:55,138 INFO L82 PathProgramCache]: Analyzing trace with hash 986441794, now seen corresponding path program 2 times [2020-10-13 23:18:55,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:18:55,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989368464] [2020-10-13 23:18:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:18:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:18:55,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:56,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:57,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:18:58,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:00,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:00,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:00,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 23:19:00,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:19:00,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5347 [2020-10-13 23:19:00,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:00,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-13 23:19:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:00,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 23:19:00,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:01,182 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2020-10-13 23:19:03,535 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-10-13 23:19:05,779 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 34 [2020-10-13 23:19:06,062 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 58 [2020-10-13 23:19:06,333 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-13 23:19:06,530 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-13 23:19:06,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:06,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:06,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:06,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:06,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:06,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:19:06,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:06,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:06,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:06,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:06,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:19:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:06,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:06,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:07,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:07,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:07,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:19:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-13 23:19:07,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:07,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:19:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:07,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:19:07,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:07,756 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2020-10-13 23:19:07,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:19:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:07,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:07,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:08,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:08,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:08,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:08,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-13 23:19:08,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:08,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:08,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:19:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:08,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:19:08,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:09,408 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-13 23:19:09,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 23:19:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:09,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:09,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:09,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:09,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:09,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-13 23:19:09,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:09,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:19:09,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:09,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:19:09,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 59 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-13 23:19:10,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989368464] [2020-10-13 23:19:10,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:10,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 23:19:10,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375783079] [2020-10-13 23:19:10,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 23:19:10,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:10,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 23:19:10,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=723, Unknown=1, NotChecked=0, Total=812 [2020-10-13 23:19:10,235 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 29 states. [2020-10-13 23:19:14,433 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2020-10-13 23:19:16,046 WARN L193 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2020-10-13 23:19:16,896 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-13 23:19:20,356 WARN L193 SmtUtils]: Spent 2.81 s on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2020-10-13 23:19:23,382 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-10-13 23:19:24,331 WARN L193 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 82 [2020-10-13 23:19:27,675 WARN L193 SmtUtils]: Spent 2.55 s on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2020-10-13 23:19:31,877 WARN L193 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2020-10-13 23:19:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:32,133 INFO L93 Difference]: Finished difference Result 87 states and 104 transitions. [2020-10-13 23:19:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 23:19:32,134 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 51 [2020-10-13 23:19:32,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:32,138 INFO L225 Difference]: With dead ends: 87 [2020-10-13 23:19:32,138 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 23:19:32,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=317, Invalid=2232, Unknown=1, NotChecked=0, Total=2550 [2020-10-13 23:19:32,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 23:19:32,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2020-10-13 23:19:32,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 23:19:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2020-10-13 23:19:32,161 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 51 [2020-10-13 23:19:32,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:32,162 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2020-10-13 23:19:32,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 23:19:32,162 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2020-10-13 23:19:32,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 23:19:32,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:32,164 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:19:32,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:19:32,164 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:32,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:32,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1056904772, now seen corresponding path program 3 times [2020-10-13 23:19:32,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:32,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98753300] [2020-10-13 23:19:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:32,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:32,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:32,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:32,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:37,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:37,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 23:19:37,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:19:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:19:37,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:37,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:19:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 23:19:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:37,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:37,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:37,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:37,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:37,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:37,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:37,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:37,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:37,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:37,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:37,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:19:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:37,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:37,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:37,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:37,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-13 23:19:37,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:37,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:19:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:37,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:19:37,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:37,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-13 23:19:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:37,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:37,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:37,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:37,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:37,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:37,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-13 23:19:37,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:37,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:37,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:19:37,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:37,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:19:37,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:37,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:19:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:37,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:37,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:37,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:37,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:37,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:19:37,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:37,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:37,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:19:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:19:37,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 23:19:37,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:37,371 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 23:19:37,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98753300] [2020-10-13 23:19:37,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:37,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:19:37,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303658373] [2020-10-13 23:19:37,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:19:37,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:37,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:19:37,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:19:37,374 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand 11 states. [2020-10-13 23:19:37,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:37,960 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2020-10-13 23:19:37,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:19:37,961 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-10-13 23:19:37,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:37,963 INFO L225 Difference]: With dead ends: 117 [2020-10-13 23:19:37,964 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 23:19:37,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:19:37,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 23:19:37,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2020-10-13 23:19:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 23:19:37,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2020-10-13 23:19:37,982 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 53 [2020-10-13 23:19:37,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:37,982 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2020-10-13 23:19:37,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:19:37,982 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2020-10-13 23:19:37,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 23:19:37,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:37,984 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:19:37,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:19:37,985 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:37,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:37,985 INFO L82 PathProgramCache]: Analyzing trace with hash 651914848, now seen corresponding path program 4 times [2020-10-13 23:19:37,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:37,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1594512452] [2020-10-13 23:19:37,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:38,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:38,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:38,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:38,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:42,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:43,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:43,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 23:19:43,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 23:19:43,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:19:43,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:43,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:19:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:43,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 23:19:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:43,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:43,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:43,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:43,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:43,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:43,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:43,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:43,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:43,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:43,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:43,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:43,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:43,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:19:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:43,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:43,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:43,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:43,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:43,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:19:43,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:43,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:19:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:43,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:19:43,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:43,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:19:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:43,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:43,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:43,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:43,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:43,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:43,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:19:43,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:43,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:43,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:19:43,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:43,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:19:43,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:19:43,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 23:19:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:43,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:43,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:43,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:43,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:43,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:19:43,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:43,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:19:43,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:43,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-13 23:19:43,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1594512452] [2020-10-13 23:19:43,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:43,115 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:19:43,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262886005] [2020-10-13 23:19:43,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:19:43,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:43,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:19:43,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:19:43,117 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand 9 states. [2020-10-13 23:19:43,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:43,336 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2020-10-13 23:19:43,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:19:43,337 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-13 23:19:43,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:43,339 INFO L225 Difference]: With dead ends: 128 [2020-10-13 23:19:43,339 INFO L226 Difference]: Without dead ends: 91 [2020-10-13 23:19:43,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:19:43,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-13 23:19:43,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2020-10-13 23:19:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 23:19:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 103 transitions. [2020-10-13 23:19:43,356 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 103 transitions. Word has length 53 [2020-10-13 23:19:43,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:43,356 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 103 transitions. [2020-10-13 23:19:43,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:19:43,356 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 103 transitions. [2020-10-13 23:19:43,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 23:19:43,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:43,358 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:19:43,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:19:43,359 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:43,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:43,359 INFO L82 PathProgramCache]: Analyzing trace with hash -213267264, now seen corresponding path program 5 times [2020-10-13 23:19:43,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:43,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138576327] [2020-10-13 23:19:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:43,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:43,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:48,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:48,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 23:19:48,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:19:48,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-13 23:19:48,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:48,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:48,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:19:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:48,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 23:19:48,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:48,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:48,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:48,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:48,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:48,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:48,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:48,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:48,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:48,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:48,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:48,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 23:19:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:48,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:48,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:48,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:48,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:48,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:48,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 23:19:48,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:48,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:19:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:48,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:19:48,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:48,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-13 23:19:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:48,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:48,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:48,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 23:19:48,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 23:19:48,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:48,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:19:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:19:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:48,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-13 23:19:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:48,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:48,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:48,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:19:48,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:48,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:19:48,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:48,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:19:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:19:48,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 23:19:48,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 23:19:48,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138576327] [2020-10-13 23:19:48,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:48,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:19:48,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753964102] [2020-10-13 23:19:48,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:19:48,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:48,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:19:48,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:19:48,526 INFO L87 Difference]: Start difference. First operand 86 states and 103 transitions. Second operand 11 states. [2020-10-13 23:19:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:48,944 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2020-10-13 23:19:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:19:48,945 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-10-13 23:19:48,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:48,946 INFO L225 Difference]: With dead ends: 112 [2020-10-13 23:19:48,947 INFO L226 Difference]: Without dead ends: 45 [2020-10-13 23:19:48,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:19:48,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-13 23:19:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2020-10-13 23:19:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-13 23:19:48,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-13 23:19:48,954 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 53 [2020-10-13 23:19:48,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:48,955 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-13 23:19:48,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:19:48,955 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-13 23:19:48,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 23:19:48,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:48,956 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:19:48,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:19:48,956 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:48,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:48,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1567108546, now seen corresponding path program 6 times [2020-10-13 23:19:48,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:48,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565968431] [2020-10-13 23:19:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:48,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:48,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:48,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:49,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:53,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:53,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-13 23:19:53,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:19:53,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:19:53,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:53,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:53,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:19:53,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:53,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 23:19:53,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:54,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:19:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:54,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:54,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:54,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:19:54,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:54,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:19:54,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:54,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:54,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:54,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:54,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:54,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:54,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:19:54,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:54,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:54,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:54,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:54,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:19:54,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:54,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:19:54,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:54,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:19:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:54,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 23:19:54,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:19:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:54,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:54,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:54,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:54,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:19:54,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:19:54,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:19:54,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:54,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:19:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:19:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 23:19:54,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:54,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-13 23:19:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:54,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:54,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:54,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:19:54,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:19:54,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:19:54,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:54,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:19:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 23:19:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:19:54,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:19:54,088 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-10-13 23:19:54,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565968431] [2020-10-13 23:19:54,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:19:54,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:19:54,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72469495] [2020-10-13 23:19:54,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:19:54,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:19:54,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:19:54,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:19:54,090 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 9 states. [2020-10-13 23:19:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:19:54,277 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-10-13 23:19:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:19:54,279 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-13 23:19:54,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:19:54,280 INFO L225 Difference]: With dead ends: 57 [2020-10-13 23:19:54,280 INFO L226 Difference]: Without dead ends: 40 [2020-10-13 23:19:54,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:19:54,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-13 23:19:54,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-13 23:19:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 23:19:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-13 23:19:54,287 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 59 [2020-10-13 23:19:54,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:19:54,287 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-13 23:19:54,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:19:54,288 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-13 23:19:54,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 23:19:54,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:19:54,289 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:19:54,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:19:54,289 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:19:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:19:54,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1973054432, now seen corresponding path program 7 times [2020-10-13 23:19:54,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:19:54,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340600922] [2020-10-13 23:19:54,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:19:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:19:54,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:54,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:56,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:57,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:58,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:59,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:19:59,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:19:59,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 23:19:59,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:19:59,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5232 [2020-10-13 23:19:59,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:19:59,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:19:59,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-13 23:19:59,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:19:59,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-13 23:19:59,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:00,066 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2020-10-13 23:20:00,263 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 31 [2020-10-13 23:20:00,569 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2020-10-13 23:20:00,865 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2020-10-13 23:20:03,258 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2020-10-13 23:20:03,582 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 65 [2020-10-13 23:20:03,784 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-13 23:20:04,017 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-13 23:20:04,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:20:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:04,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:04,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:04,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:20:04,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:04,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:20:04,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:04,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:20:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:04,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:20:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:04,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:20:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:04,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:04,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:04,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:04,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:20:04,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:20:04,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-13 23:20:04,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:04,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:20:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:04,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:20:04,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:20:05,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:20:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:05,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:05,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:05,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:05,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:20:05,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:20:05,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 457 [2020-10-13 23:20:05,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:05,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:05,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:20:05,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:05,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:20:05,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:06,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:20:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:20:06,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:20:06,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:20:06,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:20:06,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:20:06,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-13 23:20:06,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:20:06,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:20:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:20:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:20:06,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:20:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:20:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 1 proven. 103 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-13 23:20:07,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340600922] [2020-10-13 23:20:07,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:20:07,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 23:20:07,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889492611] [2020-10-13 23:20:07,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 23:20:07,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:20:07,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 23:20:07,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=743, Unknown=1, NotChecked=0, Total=812 [2020-10-13 23:20:07,060 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 29 states. [2020-10-13 23:20:07,755 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 91 [2020-10-13 23:20:09,909 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2020-10-13 23:20:10,427 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 58 [2020-10-13 23:20:10,689 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-13 23:20:11,338 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-10-13 23:20:13,806 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-13 23:20:22,807 WARN L193 SmtUtils]: Spent 6.69 s on a formula simplification. DAG size of input: 107 DAG size of output: 102 [2020-10-13 23:20:23,109 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-13 23:20:23,750 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 103 [2020-10-13 23:20:34,608 WARN L193 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 185 DAG size of output: 139 [2020-10-13 23:20:35,106 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-10-13 23:20:37,505 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-10-13 23:20:38,318 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 98 [2020-10-13 23:20:38,978 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2020-10-13 23:20:46,491 WARN L193 SmtUtils]: Spent 6.73 s on a formula simplification. DAG size of input: 180 DAG size of output: 137 [2020-10-13 23:21:00,585 WARN L193 SmtUtils]: Spent 6.02 s on a formula simplification. DAG size of input: 188 DAG size of output: 142 [2020-10-13 23:21:15,239 WARN L193 SmtUtils]: Spent 10.18 s on a formula simplification. DAG size of input: 183 DAG size of output: 140 [2020-10-13 23:21:25,526 WARN L193 SmtUtils]: Spent 7.79 s on a formula simplification. DAG size of input: 189 DAG size of output: 144 [2020-10-13 23:21:30,720 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification. DAG size of input: 185 DAG size of output: 142 [2020-10-13 23:21:43,821 WARN L193 SmtUtils]: Spent 6.85 s on a formula simplification. DAG size of input: 148 DAG size of output: 108 [2020-10-13 23:21:44,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:44,108 INFO L93 Difference]: Finished difference Result 117 states and 138 transitions. [2020-10-13 23:21:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-13 23:21:44,110 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 61 [2020-10-13 23:21:44,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:44,112 INFO L225 Difference]: With dead ends: 117 [2020-10-13 23:21:44,113 INFO L226 Difference]: Without dead ends: 111 [2020-10-13 23:21:44,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 13 SyntacticMatches, 6 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 82.9s TimeCoverageRelationStatistics Valid=387, Invalid=4031, Unknown=4, NotChecked=0, Total=4422 [2020-10-13 23:21:44,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-13 23:21:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 86. [2020-10-13 23:21:44,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-13 23:21:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 107 transitions. [2020-10-13 23:21:44,139 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 107 transitions. Word has length 61 [2020-10-13 23:21:44,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:44,140 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 107 transitions. [2020-10-13 23:21:44,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 23:21:44,141 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 107 transitions. [2020-10-13 23:21:44,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 23:21:44,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:44,142 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:21:44,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:21:44,143 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:44,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:44,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1266294562, now seen corresponding path program 8 times [2020-10-13 23:21:44,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:44,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087472512] [2020-10-13 23:21:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:44,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:44,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:49,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:49,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 23:21:49,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:21:49,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:21:49,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:49,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:21:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:21:49,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 23:21:49,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:49,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:49,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:49,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:49,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:49,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:49,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:49,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:49,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:49,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:49,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:49,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-13 23:21:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:49,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:49,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:49,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:49,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:21:49,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:49,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:21:49,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:49,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:21:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:49,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 23:21:49,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:49,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 23:21:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:49,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:49,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:49,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:21:49,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:49,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:21:49,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:49,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:21:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 23:21:49,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:49,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:21:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:49,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:49,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:49,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:21:49,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:21:49,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:49,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:21:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:21:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:21:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:49,378 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 79 proven. 16 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-13 23:21:49,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087472512] [2020-10-13 23:21:49,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:49,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:21:49,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263125476] [2020-10-13 23:21:49,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:21:49,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:49,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:21:49,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:21:49,381 INFO L87 Difference]: Start difference. First operand 86 states and 107 transitions. Second operand 13 states. [2020-10-13 23:21:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:50,044 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2020-10-13 23:21:50,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 23:21:50,046 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 63 [2020-10-13 23:21:50,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:50,048 INFO L225 Difference]: With dead ends: 137 [2020-10-13 23:21:50,048 INFO L226 Difference]: Without dead ends: 82 [2020-10-13 23:21:50,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:21:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-13 23:21:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-13 23:21:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 23:21:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2020-10-13 23:21:50,061 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 63 [2020-10-13 23:21:50,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:50,062 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2020-10-13 23:21:50,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:21:50,062 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2020-10-13 23:21:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-13 23:21:50,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:50,063 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:21:50,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:21:50,064 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:50,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:50,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1818893280, now seen corresponding path program 9 times [2020-10-13 23:21:50,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:50,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781873954] [2020-10-13 23:21:50,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:50,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:50,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:50,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:51,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:51,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:55,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 23:21:55,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:21:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:21:55,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:55,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:21:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:21:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-13 23:21:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:55,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:21:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:55,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:55,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:21:55,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:55,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:21:55,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:55,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:55,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:55,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:55,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:55,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:55,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 23:21:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:55,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:55,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:21:55,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:55,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 23:21:55,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:55,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:21:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 23:21:55,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:55,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:21:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:55,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:21:55,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:21:55,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 23:21:55,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:55,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:21:55,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:21:55,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 23:21:55,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:55,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-13 23:21:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:21:55,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:21:55,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:21:55,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:21:55,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:21:55,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:21:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:21:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:21:55,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:21:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:21:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-13 23:21:55,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781873954] [2020-10-13 23:21:55,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:21:55,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:21:55,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695615783] [2020-10-13 23:21:55,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:21:55,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:21:55,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:21:55,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:21:55,224 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand 11 states. [2020-10-13 23:21:55,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:21:55,514 INFO L93 Difference]: Finished difference Result 122 states and 137 transitions. [2020-10-13 23:21:55,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:21:55,516 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-13 23:21:55,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:21:55,517 INFO L225 Difference]: With dead ends: 122 [2020-10-13 23:21:55,517 INFO L226 Difference]: Without dead ends: 85 [2020-10-13 23:21:55,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:21:55,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-13 23:21:55,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-13 23:21:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-13 23:21:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2020-10-13 23:21:55,530 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 65 [2020-10-13 23:21:55,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:21:55,531 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2020-10-13 23:21:55,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:21:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2020-10-13 23:21:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-13 23:21:55,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:21:55,532 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:21:55,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:21:55,532 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:21:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:21:55,533 INFO L82 PathProgramCache]: Analyzing trace with hash 517038718, now seen corresponding path program 10 times [2020-10-13 23:21:55,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:21:55,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522403261] [2020-10-13 23:21:55,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:21:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:21:55,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:55,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:56,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:56,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:21:56,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:00,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:00,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 23:22:00,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 23:22:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-13 23:22:00,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:00,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:22:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:22:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-13 23:22:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:00,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:22:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:00,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:00,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:00,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:22:00,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:22:00,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:00,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:22:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:00,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:22:00,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:00,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-13 23:22:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:00,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:00,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:00,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:22:00,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:00,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 23:22:00,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:00,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:00,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:22:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:00,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 23:22:00,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:00,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-13 23:22:00,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:00,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:00,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:00,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:00,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 23:22:00,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:22:00,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-13 23:22:00,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:00,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:00,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:22:00,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:22:00,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 23:22:00,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:00,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-13 23:22:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:00,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:00,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 23:22:00,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:22:00,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 23:22:00,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:00,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:22:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 23:22:00,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:22:00,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:22:00,815 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 44 proven. 79 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2020-10-13 23:22:00,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522403261] [2020-10-13 23:22:00,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:22:00,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:22:00,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852543133] [2020-10-13 23:22:00,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:22:00,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:22:00,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:22:00,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:22:00,817 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 13 states. [2020-10-13 23:22:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:22:01,631 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2020-10-13 23:22:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:22:01,633 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-13 23:22:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:22:01,634 INFO L225 Difference]: With dead ends: 121 [2020-10-13 23:22:01,634 INFO L226 Difference]: Without dead ends: 55 [2020-10-13 23:22:01,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:22:01,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-13 23:22:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2020-10-13 23:22:01,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-13 23:22:01,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-13 23:22:01,643 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 67 [2020-10-13 23:22:01,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:22:01,644 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-13 23:22:01,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:22:01,644 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-13 23:22:01,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 23:22:01,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:22:01,645 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:22:01,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:22:01,645 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:22:01,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:22:01,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1946275326, now seen corresponding path program 11 times [2020-10-13 23:22:01,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:22:01,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796316078] [2020-10-13 23:22:01,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:22:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:22:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:02,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:06,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:22:07,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:22:07,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 23:22:07,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:22:07,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5887 [2020-10-13 23:22:07,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:22:07,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:22:07,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-13 23:22:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:22:07,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-13 23:22:07,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0