/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:02:49,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:02:49,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:02:49,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:02:49,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:02:49,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:02:49,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:02:49,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:02:49,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:02:49,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:02:49,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:02:49,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:02:49,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:02:49,944 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:02:49,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:02:49,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:02:49,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:02:49,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:02:49,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:02:49,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:02:49,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:02:49,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:02:49,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:02:49,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:02:49,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:02:49,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:02:49,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:02:49,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:02:49,977 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:02:49,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:02:49,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:02:49,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:02:49,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:02:49,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:02:49,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:02:49,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:02:49,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:02:49,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:02:49,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:02:49,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:02:49,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:02:49,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:02:50,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:02:50,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:02:50,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:02:50,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:02:50,045 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:02:50,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:02:50,046 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:02:50,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:02:50,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:02:50,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:02:50,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:02:50,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:02:50,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:02:50,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:02:50,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:02:50,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:02:50,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:02:50,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:02:50,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:02:50,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:02:50,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:02:50,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:02:50,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:02:50,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:02:50,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:02:50,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:02:50,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:02:50,052 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:02:50,052 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:02:50,052 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 08:02:50,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:02:50,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:02:50,559 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:02:50,561 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:02:50,561 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:02:50,563 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2020-09-25 08:02:50,651 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c973e3cf0/c1e90e358a2f42d881a228b844c90184/FLAGed31bfc6d [2020-09-25 08:02:51,173 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:02:51,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2020-09-25 08:02:51,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c973e3cf0/c1e90e358a2f42d881a228b844c90184/FLAGed31bfc6d [2020-09-25 08:02:51,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c973e3cf0/c1e90e358a2f42d881a228b844c90184 [2020-09-25 08:02:51,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:02:51,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:02:51,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:02:51,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:02:51,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:02:51,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:02:51" (1/1) ... [2020-09-25 08:02:51,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fa97df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:51, skipping insertion in model container [2020-09-25 08:02:51,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:02:51" (1/1) ... [2020-09-25 08:02:51,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:02:51,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:02:51,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:02:51,812 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:02:51,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:02:51,859 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:02:51,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:51 WrapperNode [2020-09-25 08:02:51,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:02:51,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:02:51,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:02:51,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:02:51,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:51" (1/1) ... [2020-09-25 08:02:51,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:51" (1/1) ... [2020-09-25 08:02:51,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:51" (1/1) ... [2020-09-25 08:02:51,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:51" (1/1) ... [2020-09-25 08:02:51,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:51" (1/1) ... [2020-09-25 08:02:51,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:51" (1/1) ... [2020-09-25 08:02:51,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:51" (1/1) ... [2020-09-25 08:02:51,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:02:51,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:02:51,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:02:51,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:02:51,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:02:52,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:02:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:02:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 08:02:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:02:52,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:02:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:02:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:02:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 08:02:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:02:52,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:02:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:02:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:02:52,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:02:52,293 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:02:52,294 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 08:02:52,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:02:52 BoogieIcfgContainer [2020-09-25 08:02:52,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:02:52,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:02:52,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:02:52,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:02:52,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:02:51" (1/3) ... [2020-09-25 08:02:52,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c52dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:02:52, skipping insertion in model container [2020-09-25 08:02:52,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:02:51" (2/3) ... [2020-09-25 08:02:52,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c52dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:02:52, skipping insertion in model container [2020-09-25 08:02:52,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:02:52" (3/3) ... [2020-09-25 08:02:52,328 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005b.i [2020-09-25 08:02:52,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:02:52,365 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:02:52,401 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:02:52,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:02:52,434 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:02:52,434 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:02:52,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:02:52,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:02:52,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:02:52,435 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:02:52,435 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:02:52,460 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-25 08:02:52,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 08:02:52,467 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:52,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:52,469 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:52,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:52,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1930258608, now seen corresponding path program 1 times [2020-09-25 08:02:52,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:52,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133681839] [2020-09-25 08:02:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:52,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:52,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:52,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:02:52,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:52,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 08:02:52,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:52,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 08:02:52,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:52,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:02:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:52,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:52,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:52,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:52,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:52,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:02:52,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:52,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:52,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:52,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:52,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:52,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:02:52,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133681839] [2020-09-25 08:02:52,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:52,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 08:02:52,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101316185] [2020-09-25 08:02:52,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 08:02:52,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:52,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 08:02:52,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 08:02:52,754 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-09-25 08:02:52,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:52,788 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-09-25 08:02:52,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 08:02:52,790 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-09-25 08:02:52,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:52,802 INFO L225 Difference]: With dead ends: 48 [2020-09-25 08:02:52,802 INFO L226 Difference]: Without dead ends: 22 [2020-09-25 08:02:52,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 08:02:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-25 08:02:52,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-25 08:02:52,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 08:02:52,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-09-25 08:02:52,857 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2020-09-25 08:02:52,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:52,857 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-09-25 08:02:52,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 08:02:52,858 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-09-25 08:02:52,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 08:02:52,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:52,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:52,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:02:52,859 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:52,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:52,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1900705936, now seen corresponding path program 1 times [2020-09-25 08:02:52,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:52,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659225382] [2020-09-25 08:02:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:52,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:52,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:52,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 08:02:52,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:52,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 08:02:52,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:52,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:52,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:52,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:02:52,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:02:52,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:02:52,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:52,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:52,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:52,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:52,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:52,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:02:52,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:52,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:52,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:52,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:02:52,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659225382] [2020-09-25 08:02:52,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:52,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:02:52,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956130446] [2020-09-25 08:02:52,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:02:52,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:52,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:02:52,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:02:52,994 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 3 states. [2020-09-25 08:02:53,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:53,018 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2020-09-25 08:02:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:02:53,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-25 08:02:53,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:53,021 INFO L225 Difference]: With dead ends: 29 [2020-09-25 08:02:53,021 INFO L226 Difference]: Without dead ends: 24 [2020-09-25 08:02:53,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:02:53,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-25 08:02:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-09-25 08:02:53,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 08:02:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-09-25 08:02:53,029 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-09-25 08:02:53,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:53,030 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-09-25 08:02:53,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:02:53,030 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-09-25 08:02:53,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 08:02:53,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:53,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:53,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:02:53,032 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:53,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1024587775, now seen corresponding path program 1 times [2020-09-25 08:02:53,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:53,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592580887] [2020-09-25 08:02:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:53,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 08:02:53,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:02:53,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-25 08:02:53,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:02:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:02:53,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:02:53,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:02:53,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:53,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:53,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:02:53,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:53,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:53,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:53,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:53,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:02:53,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592580887] [2020-09-25 08:02:53,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:02:53,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 08:02:53,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205511244] [2020-09-25 08:02:53,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:02:53,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:53,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:02:53,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:02:53,456 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2020-09-25 08:02:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:53,496 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-09-25 08:02:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 08:02:53,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-25 08:02:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:53,498 INFO L225 Difference]: With dead ends: 36 [2020-09-25 08:02:53,498 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 08:02:53,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:02:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 08:02:53,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-09-25 08:02:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 08:02:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 08:02:53,506 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2020-09-25 08:02:53,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:53,507 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 08:02:53,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:02:53,507 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 08:02:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 08:02:53,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:53,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:53,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:02:53,509 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:53,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:53,509 INFO L82 PathProgramCache]: Analyzing trace with hash 713803248, now seen corresponding path program 2 times [2020-09-25 08:02:53,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:53,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530935037] [2020-09-25 08:02:53,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 08:02:53,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:02:53,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-25 08:02:53,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:02:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 08:02:53,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 08:02:53,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:02:53,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:53,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:53,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:53,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:53,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:53,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:02:53,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:53,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:53,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:53,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:53,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:53,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:02:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 08:02:53,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530935037] [2020-09-25 08:02:53,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:02:53,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:02:53,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963763172] [2020-09-25 08:02:53,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:02:53,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:53,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:02:53,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:02:53,962 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 3 states. [2020-09-25 08:02:54,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:54,004 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-09-25 08:02:54,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:02:54,006 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-09-25 08:02:54,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:54,007 INFO L225 Difference]: With dead ends: 48 [2020-09-25 08:02:54,007 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 08:02:54,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:02:54,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 08:02:54,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-09-25 08:02:54,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 08:02:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 08:02:54,022 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 25 [2020-09-25 08:02:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:54,023 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 08:02:54,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:02:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 08:02:54,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 08:02:54,026 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:54,026 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:54,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:02:54,028 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:54,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:54,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1729554991, now seen corresponding path program 1 times [2020-09-25 08:02:54,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:54,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404788149] [2020-09-25 08:02:54,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:54,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:54,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:54,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:54,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:54,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:54,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:54,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:54,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:02:54,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:02:54,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-09-25 08:02:54,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:54,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:02:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:02:54,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:02:54,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:55,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:55,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:55,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:55,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:55,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:02:55,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:55,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:55,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:55,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:55,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:02:55,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404788149] [2020-09-25 08:02:55,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:02:55,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 08:02:55,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346836211] [2020-09-25 08:02:55,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:02:55,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:55,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:02:55,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:02:55,032 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 5 states. [2020-09-25 08:02:55,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:55,087 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 08:02:55,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:02:55,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-25 08:02:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:55,093 INFO L225 Difference]: With dead ends: 44 [2020-09-25 08:02:55,093 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 08:02:55,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:02:55,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 08:02:55,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2020-09-25 08:02:55,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 08:02:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 08:02:55,108 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 27 [2020-09-25 08:02:55,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:55,108 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 08:02:55,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:02:55,109 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 08:02:55,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 08:02:55,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:55,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:55,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:02:55,111 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:55,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:55,111 INFO L82 PathProgramCache]: Analyzing trace with hash -373902912, now seen corresponding path program 2 times [2020-09-25 08:02:55,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:55,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144450200] [2020-09-25 08:02:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:55,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:55,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:57,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:02:57,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 08:02:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2276 [2020-09-25 08:02:57,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:57,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:02:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:02:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:02:57,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:57,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:02:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:57,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:02:57,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:02:57,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:02:57,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:02:57,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:02:57,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:02:57,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:02:57,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:02:57,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:02:57,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:02:57,455 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:02:57,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144450200] [2020-09-25 08:02:57,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:02:57,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 08:02:57,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402077016] [2020-09-25 08:02:57,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:02:57,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:02:57,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:02:57,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:02:57,458 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 6 states. [2020-09-25 08:02:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:02:57,504 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-09-25 08:02:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:02:57,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-09-25 08:02:57,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:02:57,506 INFO L225 Difference]: With dead ends: 51 [2020-09-25 08:02:57,506 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 08:02:57,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:02:57,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 08:02:57,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-09-25 08:02:57,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 08:02:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-09-25 08:02:57,515 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 32 [2020-09-25 08:02:57,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:02:57,516 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-09-25 08:02:57,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:02:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-09-25 08:02:57,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 08:02:57,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:02:57,517 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:02:57,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:02:57,518 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:02:57,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:02:57,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1102447409, now seen corresponding path program 3 times [2020-09-25 08:02:57,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:02:57,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457513955] [2020-09-25 08:02:57,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:02:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:02:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:57,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:02:58,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:01,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:01,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 08:03:01,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-09-25 08:03:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4319 [2020-09-25 08:03:01,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:01,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:03:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:03:01,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:03:01,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:01,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:01,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:01,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:01,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:01,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:01,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:01,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:01,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:01,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:01,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:01,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:01,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:03:01,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457513955] [2020-09-25 08:03:01,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:01,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:03:01,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735240236] [2020-09-25 08:03:01,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:03:01,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:01,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:03:01,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:03:01,921 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 7 states. [2020-09-25 08:03:01,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:01,977 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2020-09-25 08:03:01,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:03:01,978 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-09-25 08:03:01,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:01,979 INFO L225 Difference]: With dead ends: 58 [2020-09-25 08:03:01,979 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 08:03:01,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:03:01,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 08:03:01,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-09-25 08:03:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 08:03:01,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-09-25 08:03:01,988 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 37 [2020-09-25 08:03:01,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:01,988 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-09-25 08:03:01,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:03:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-09-25 08:03:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 08:03:01,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:01,990 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:01,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:03:01,991 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:01,991 INFO L82 PathProgramCache]: Analyzing trace with hash -492420320, now seen corresponding path program 4 times [2020-09-25 08:03:01,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:01,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619567951] [2020-09-25 08:03:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:02,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:03,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:04,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:04,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:04,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:04,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:04,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:05,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:07,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:03:07,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 32 [2020-09-25 08:03:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:03:07,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:07,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:03:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:03:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:03:07,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:07,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:07,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:07,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:07,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:07,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:03:07,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:07,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:07,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:07,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:03:07,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619567951] [2020-09-25 08:03:07,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:07,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:03:07,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529606025] [2020-09-25 08:03:07,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:03:07,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:07,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:03:07,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:03:07,091 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 8 states. [2020-09-25 08:03:07,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:07,164 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2020-09-25 08:03:07,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:03:07,167 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-09-25 08:03:07,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:07,169 INFO L225 Difference]: With dead ends: 65 [2020-09-25 08:03:07,169 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 08:03:07,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:03:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 08:03:07,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-09-25 08:03:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-25 08:03:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2020-09-25 08:03:07,186 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 42 [2020-09-25 08:03:07,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:07,186 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2020-09-25 08:03:07,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:03:07,186 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2020-09-25 08:03:07,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 08:03:07,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:07,189 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:07,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:03:07,193 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:07,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:07,194 INFO L82 PathProgramCache]: Analyzing trace with hash 356403055, now seen corresponding path program 5 times [2020-09-25 08:03:07,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:07,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031080709] [2020-09-25 08:03:07,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:07,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:07,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:08,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:12,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 08:03:12,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 44 [2020-09-25 08:03:12,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 08:03:12,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:12,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:03:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:03:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 08:03:12,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:12,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:12,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:12,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:12,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:03:12,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:12,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:12,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:12,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:12,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 08:03:12,268 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031080709] [2020-09-25 08:03:12,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:12,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 08:03:12,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057478087] [2020-09-25 08:03:12,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:03:12,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:12,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:03:12,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:03:12,276 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand 6 states. [2020-09-25 08:03:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:12,356 INFO L93 Difference]: Finished difference Result 106 states and 130 transitions. [2020-09-25 08:03:12,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:03:12,357 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-09-25 08:03:12,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:12,357 INFO L225 Difference]: With dead ends: 106 [2020-09-25 08:03:12,358 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 08:03:12,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:03:12,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 08:03:12,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-09-25 08:03:12,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 08:03:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2020-09-25 08:03:12,371 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 47 [2020-09-25 08:03:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:12,371 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2020-09-25 08:03:12,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:03:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2020-09-25 08:03:12,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 08:03:12,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:12,374 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:12,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:03:12,375 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:12,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:12,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1018486162, now seen corresponding path program 6 times [2020-09-25 08:03:12,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:12,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691331781] [2020-09-25 08:03:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:12,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:12,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:14,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:14,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 08:03:14,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:03:14,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1893 [2020-09-25 08:03:14,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:14,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:14,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:03:14,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:03:14,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 08:03:14,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:14,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:14,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:14,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:14,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:14,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:14,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:14,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:14,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:03:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 08:03:14,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691331781] [2020-09-25 08:03:14,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:14,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:03:14,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782118216] [2020-09-25 08:03:14,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:03:14,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:14,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:03:14,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:03:14,354 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand 7 states. [2020-09-25 08:03:14,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:14,450 INFO L93 Difference]: Finished difference Result 108 states and 132 transitions. [2020-09-25 08:03:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:03:14,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-09-25 08:03:14,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:14,451 INFO L225 Difference]: With dead ends: 108 [2020-09-25 08:03:14,451 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 08:03:14,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:03:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 08:03:14,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-09-25 08:03:14,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 08:03:14,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 75 transitions. [2020-09-25 08:03:14,460 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 75 transitions. Word has length 49 [2020-09-25 08:03:14,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:14,460 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 75 transitions. [2020-09-25 08:03:14,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:03:14,460 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 75 transitions. [2020-09-25 08:03:14,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:03:14,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:14,461 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:14,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:03:14,462 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:14,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:14,462 INFO L82 PathProgramCache]: Analyzing trace with hash 562903469, now seen corresponding path program 7 times [2020-09-25 08:03:14,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:14,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319066391] [2020-09-25 08:03:14,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:14,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:14,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:14,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:14,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:14,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:14,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:14,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:15,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:15,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:17,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:17,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 08:03:17,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 08:03:17,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3441 [2020-09-25 08:03:17,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:17,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:03:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:03:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 08:03:17,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:03:17,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:17,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:17,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:17,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:17,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:17,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:17,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 08:03:17,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319066391] [2020-09-25 08:03:17,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:03:17,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 08:03:17,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114852593] [2020-09-25 08:03:17,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:03:17,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:17,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:03:17,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:03:17,992 INFO L87 Difference]: Start difference. First operand 63 states and 75 transitions. Second operand 8 states. [2020-09-25 08:03:18,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:18,132 INFO L93 Difference]: Finished difference Result 110 states and 134 transitions. [2020-09-25 08:03:18,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:03:18,133 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-25 08:03:18,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:18,134 INFO L225 Difference]: With dead ends: 110 [2020-09-25 08:03:18,134 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 08:03:18,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:03:18,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 08:03:18,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-09-25 08:03:18,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 08:03:18,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2020-09-25 08:03:18,142 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 51 [2020-09-25 08:03:18,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:18,142 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2020-09-25 08:03:18,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:03:18,143 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2020-09-25 08:03:18,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 08:03:18,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:03:18,144 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:03:18,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:03:18,144 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:03:18,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:03:18,144 INFO L82 PathProgramCache]: Analyzing trace with hash -140083924, now seen corresponding path program 8 times [2020-09-25 08:03:18,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:03:18,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514407736] [2020-09-25 08:03:18,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:03:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:18,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:19,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:22,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:22,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 08:03:22,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 08:03:22,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4831 [2020-09-25 08:03:22,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:22,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:22,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:03:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 08:03:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:03:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:23,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:03:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:03:23,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:03:23,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:03:23,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:03:23,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:03:23,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:03:23,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:03:23,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:03:23,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:03:23,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:03:23,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:03:23,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:03:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-09-25 08:03:23,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514407736] [2020-09-25 08:03:23,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:03:23,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:03:23,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930091862] [2020-09-25 08:03:23,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:03:23,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:03:23,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:03:23,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:03:23,030 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 5 states. [2020-09-25 08:03:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:03:23,048 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2020-09-25 08:03:23,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:03:23,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-09-25 08:03:23,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:03:23,049 INFO L225 Difference]: With dead ends: 100 [2020-09-25 08:03:23,049 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 08:03:23,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:03:23,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 08:03:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 08:03:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 08:03:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 08:03:23,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-09-25 08:03:23,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:03:23,051 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 08:03:23,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:03:23,051 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 08:03:23,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 08:03:23,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:03:23,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 08:03:23,164 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 08:03:23,164 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 08:03:23,164 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 08:03:23,164 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 08:03:23,165 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 08:03:23,165 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 08:03:23,165 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 08:03:23,165 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 08:03:23,165 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 08:03:23,165 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 08:03:23,165 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 08:03:23,166 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 08:03:23,166 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 30) no Hoare annotation was computed. [2020-09-25 08:03:23,166 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 08:03:23,166 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 08:03:23,166 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 08:03:23,166 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 08:03:23,167 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 30) no Hoare annotation was computed. [2020-09-25 08:03:23,167 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 30) the Hoare annotation is: true [2020-09-25 08:03:23,167 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 08:03:23,167 INFO L264 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (= main_~k~0 4) [2020-09-25 08:03:23,167 INFO L264 CegarLoopResult]: At program point L24-3(lines 18 27) the Hoare annotation is: (or (= main_~k~0 4) (and (<= main_~i~0 0) (<= (+ main_~j~0 100) 0))) [2020-09-25 08:03:23,167 INFO L264 CegarLoopResult]: At program point L20-2(lines 20 22) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2020-09-25 08:03:23,168 INFO L268 CegarLoopResult]: For program point L20-3(lines 20 22) no Hoare annotation was computed. [2020-09-25 08:03:23,168 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 08:03:23,168 INFO L264 CegarLoopResult]: At program point L18-2(lines 18 27) the Hoare annotation is: (= main_~k~0 4) [2020-09-25 08:03:23,168 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 08:03:23,168 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 08:03:23,168 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 08:03:23,169 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 08:03:23,169 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 08:03:23,169 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 08:03:23,169 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 08:03:23,169 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 08:03:23,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:03:23 BoogieIcfgContainer [2020-09-25 08:03:23,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:03:23,198 INFO L168 Benchmark]: Toolchain (without parser) took 31665.46 ms. Allocated memory was 140.5 MB in the beginning and 406.8 MB in the end (delta: 266.3 MB). Free memory was 104.5 MB in the beginning and 149.0 MB in the end (delta: -44.4 MB). Peak memory consumption was 221.9 MB. Max. memory is 7.1 GB. [2020-09-25 08:03:23,199 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:03:23,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.87 ms. Allocated memory is still 140.5 MB. Free memory was 103.8 MB in the beginning and 94.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 08:03:23,200 INFO L168 Benchmark]: Boogie Preprocessor took 36.90 ms. Allocated memory is still 140.5 MB. Free memory was 94.2 MB in the beginning and 92.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:03:23,201 INFO L168 Benchmark]: RCFGBuilder took 402.75 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 169.9 MB in the end (delta: -77.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:03:23,202 INFO L168 Benchmark]: TraceAbstraction took 30877.94 ms. Allocated memory was 203.4 MB in the beginning and 406.8 MB in the end (delta: 203.4 MB). Free memory was 169.3 MB in the beginning and 149.0 MB in the end (delta: 20.3 MB). Peak memory consumption was 223.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:03:23,206 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 322.87 ms. Allocated memory is still 140.5 MB. Free memory was 103.8 MB in the beginning and 94.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.90 ms. Allocated memory is still 140.5 MB. Free memory was 94.2 MB in the beginning and 92.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.75 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 169.9 MB in the end (delta: -77.3 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30877.94 ms. Allocated memory was 203.4 MB in the beginning and 406.8 MB in the end (delta: 203.4 MB). Free memory was 169.3 MB in the beginning and 149.0 MB in the end (delta: 20.3 MB). Peak memory consumption was 223.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: k == 4 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: k == 4 || i <= 1 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: k == 4 || (i <= 0 && j + 100 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 30.6s, OverallIterations: 12, TraceHistogramMax: 6, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 264 SDtfs, 123 SDslu, 614 SDs, 0 SdLazy, 252 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 21 PreInvPairs, 45 NumberOfFragments, 31 HoareAnnotationTreeSize, 21 FomulaSimplifications, 207 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 37 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 29.2s InterpolantComputationTime, 413 NumberOfCodeBlocks, 413 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 401 ConstructedInterpolants, 0 QuantifiedInterpolants, 44419 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 341/540 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...