/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:35:25,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:35:25,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:35:25,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:35:25,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:35:25,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:35:25,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:35:25,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:35:25,961 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:35:25,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:35:25,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:35:25,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:35:25,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:35:25,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:35:25,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:35:25,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:35:25,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:35:25,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:35:25,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:35:25,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:35:25,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:35:25,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:35:25,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:35:25,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:35:26,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:35:26,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:35:26,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:35:26,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:35:26,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:35:26,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:35:26,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:35:26,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:35:26,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:35:26,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:35:26,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:35:26,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:35:26,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:35:26,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:35:26,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:35:26,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:35:26,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:35:26,014 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 [2020-09-21 12:35:26,047 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:35:26,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:35:26,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:35:26,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:35:26,049 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:35:26,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:35:26,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:35:26,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:35:26,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:35:26,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:35:26,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:35:26,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:35:26,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:35:26,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:35:26,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:35:26,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:35:26,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:35:26,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:35:26,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:35:26,053 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:35:26,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:35:26,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:35:26,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:35:26,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:35:26,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:35:26,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:35:26,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:35:26,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:35:26,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:35:26,055 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:35:26,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:35:26,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:35:26,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:35:26,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:35:26,572 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:35:26,574 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2020-09-21 12:35:26,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4a82bdef/caf39b30d7fa438a96de03a74b3db83b/FLAGf56952dff [2020-09-21 12:35:27,169 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:35:27,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/lu.cmp.c [2020-09-21 12:35:27,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4a82bdef/caf39b30d7fa438a96de03a74b3db83b/FLAGf56952dff [2020-09-21 12:35:27,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4a82bdef/caf39b30d7fa438a96de03a74b3db83b [2020-09-21 12:35:27,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:35:27,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:35:27,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:35:27,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:35:27,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:35:27,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:35:27" (1/1) ... [2020-09-21 12:35:27,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53afdaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:27, skipping insertion in model container [2020-09-21 12:35:27,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:35:27" (1/1) ... [2020-09-21 12:35:27,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:35:27,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:35:27,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:35:27,920 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:35:28,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:35:28,104 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:35:28,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:28 WrapperNode [2020-09-21 12:35:28,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:35:28,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:35:28,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:35:28,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:35:28,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:28" (1/1) ... [2020-09-21 12:35:28,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:28" (1/1) ... [2020-09-21 12:35:28,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:28" (1/1) ... [2020-09-21 12:35:28,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:28" (1/1) ... [2020-09-21 12:35:28,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:28" (1/1) ... [2020-09-21 12:35:28,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:28" (1/1) ... [2020-09-21 12:35:28,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:28" (1/1) ... [2020-09-21 12:35:28,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:35:28,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:35:28,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:35:28,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:35:28,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:28" (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 [2020-09-21 12:35:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:35:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:35:28,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:35:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2020-09-21 12:35:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:35:28,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2020-09-21 12:35:28,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:35:28,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:35:28,257 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2020-09-21 12:35:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2020-09-21 12:35:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:35:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-21 12:35:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-21 12:35:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:35:28,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:35:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:35:28,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:35:28,773 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:35:28,773 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-09-21 12:35:28,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:35:28 BoogieIcfgContainer [2020-09-21 12:35:28,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:35:28,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:35:28,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:35:28,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:35:28,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:35:27" (1/3) ... [2020-09-21 12:35:28,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6133de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:35:28, skipping insertion in model container [2020-09-21 12:35:28,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:28" (2/3) ... [2020-09-21 12:35:28,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6133de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:35:28, skipping insertion in model container [2020-09-21 12:35:28,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:35:28" (3/3) ... [2020-09-21 12:35:28,788 INFO L109 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2020-09-21 12:35:28,798 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:35:28,810 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:35:28,831 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:35:28,858 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:35:28,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:35:28,859 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:35:28,859 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:35:28,859 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:35:28,859 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:35:28,859 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:35:28,859 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:35:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-09-21 12:35:28,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 12:35:28,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:28,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:28,891 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:28,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:28,898 INFO L82 PathProgramCache]: Analyzing trace with hash 406725423, now seen corresponding path program 1 times [2020-09-21 12:35:28,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:28,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268608866] [2020-09-21 12:35:28,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:29,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:29,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:29,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:29,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:35:29,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:35:29,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-09-21 12:35:29,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:35:29,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:29,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-21 12:35:29,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:29,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:29,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:29,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:29,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:29,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:35:29,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:29,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:29,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:29,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:35:29,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268608866] [2020-09-21 12:35:29,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:29,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:35:29,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481682292] [2020-09-21 12:35:29,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:35:29,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:29,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:35:29,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:35:29,606 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 3 states. [2020-09-21 12:35:29,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:29,864 INFO L93 Difference]: Finished difference Result 127 states and 191 transitions. [2020-09-21 12:35:29,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:35:29,867 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-21 12:35:29,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:29,881 INFO L225 Difference]: With dead ends: 127 [2020-09-21 12:35:29,881 INFO L226 Difference]: Without dead ends: 24 [2020-09-21 12:35:29,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:35:29,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-21 12:35:29,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-09-21 12:35:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-09-21 12:35:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-09-21 12:35:29,966 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2020-09-21 12:35:29,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:29,967 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-09-21 12:35:29,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:35:29,968 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-09-21 12:35:29,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 12:35:29,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:29,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:29,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:35:29,969 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:29,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:29,970 INFO L82 PathProgramCache]: Analyzing trace with hash 394719650, now seen corresponding path program 1 times [2020-09-21 12:35:29,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:29,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115528710] [2020-09-21 12:35:29,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:30,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:30,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:30,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:30,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:35:30,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:35:30,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-09-21 12:35:30,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:30,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:35:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:30,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:35:30,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:30,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:30,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:30,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:30,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:30,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:30,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:35:30,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:30,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:30,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:30,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:35:30,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115528710] [2020-09-21 12:35:30,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:30,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:35:30,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216699460] [2020-09-21 12:35:30,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:35:30,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:30,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:35:30,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:35:30,509 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-09-21 12:35:30,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:30,741 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-09-21 12:35:30,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:35:30,742 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-21 12:35:30,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:30,743 INFO L225 Difference]: With dead ends: 40 [2020-09-21 12:35:30,743 INFO L226 Difference]: Without dead ends: 26 [2020-09-21 12:35:30,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:35:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-21 12:35:30,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2020-09-21 12:35:30,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-21 12:35:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-09-21 12:35:30,753 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2020-09-21 12:35:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:30,754 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-09-21 12:35:30,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:35:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-09-21 12:35:30,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 12:35:30,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:30,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:30,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:35:30,756 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:30,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:30,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1180233829, now seen corresponding path program 1 times [2020-09-21 12:35:30,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:30,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122938488] [2020-09-21 12:35:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:30,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:30,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:30,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:31,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:31,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:31,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 12:35:31,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:35:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-09-21 12:35:31,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:35:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 12:35:31,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:31,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:31,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:31,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:31,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:31,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:31,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:35:31,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:31,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:31,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:35:31,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122938488] [2020-09-21 12:35:31,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:31,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:35:31,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110331754] [2020-09-21 12:35:31,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:35:31,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:31,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:35:31,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:35:31,521 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2020-09-21 12:35:31,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:31,748 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-21 12:35:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:35:31,749 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-21 12:35:31,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:31,750 INFO L225 Difference]: With dead ends: 50 [2020-09-21 12:35:31,750 INFO L226 Difference]: Without dead ends: 35 [2020-09-21 12:35:31,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:35:31,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-21 12:35:31,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24. [2020-09-21 12:35:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-21 12:35:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-09-21 12:35:31,759 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 16 [2020-09-21 12:35:31,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:31,759 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-09-21 12:35:31,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:35:31,760 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-09-21 12:35:31,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 12:35:31,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:31,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:31,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:35:31,761 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:31,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:31,762 INFO L82 PathProgramCache]: Analyzing trace with hash -370887203, now seen corresponding path program 1 times [2020-09-21 12:35:31,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:31,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245377040] [2020-09-21 12:35:31,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:31,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:31,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:31,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:32,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:32,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:32,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:32,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 12:35:32,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:35:32,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-09-21 12:35:32,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:35:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:32,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:35:32,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:32,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:32,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:32,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:32,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:32,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:32,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:35:32,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:32,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:32,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 18 [2020-09-21 12:35:32,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:35:32,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245377040] [2020-09-21 12:35:32,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:32,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:35:32,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491181362] [2020-09-21 12:35:32,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:35:32,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:32,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:35:32,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:35:32,610 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-09-21 12:35:32,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:32,866 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-09-21 12:35:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:35:32,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-21 12:35:32,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:32,868 INFO L225 Difference]: With dead ends: 37 [2020-09-21 12:35:32,869 INFO L226 Difference]: Without dead ends: 35 [2020-09-21 12:35:32,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:35:32,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-21 12:35:32,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-09-21 12:35:32,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-21 12:35:32,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-09-21 12:35:32,878 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 16 [2020-09-21 12:35:32,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:32,879 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-09-21 12:35:32,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:35:32,879 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-09-21 12:35:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 12:35:32,881 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:32,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:32,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:35:32,881 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:32,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:32,882 INFO L82 PathProgramCache]: Analyzing trace with hash 442817577, now seen corresponding path program 1 times [2020-09-21 12:35:32,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:32,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697555833] [2020-09-21 12:35:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:32,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:33,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:33,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:33,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:33,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:33,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:33,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:35:33,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:35:33,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-09-21 12:35:33,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:33,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:35:33,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:33,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:35:33,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:33,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:33,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:34,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:34,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:34,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:34,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:35:34,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:34,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:34,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:34,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:34,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:34,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:35:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:34,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:34,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:34,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:35:34,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:34,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:35:34,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:34,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:34,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:35:34,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:34,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:35:34,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697555833] [2020-09-21 12:35:34,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:34,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:35:34,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171893736] [2020-09-21 12:35:34,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:35:34,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:34,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:35:34,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:35:34,022 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-09-21 12:35:34,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:34,206 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2020-09-21 12:35:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:35:34,206 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-21 12:35:34,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:34,210 INFO L225 Difference]: With dead ends: 66 [2020-09-21 12:35:34,210 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 12:35:34,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:35:34,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 12:35:34,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-21 12:35:34,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 12:35:34,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-09-21 12:35:34,219 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 29 [2020-09-21 12:35:34,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:34,219 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-09-21 12:35:34,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:35:34,220 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-09-21 12:35:34,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 12:35:34,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:34,221 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:34,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:35:34,221 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:34,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:34,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1798981815, now seen corresponding path program 2 times [2020-09-21 12:35:34,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:34,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902072631] [2020-09-21 12:35:34,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:34,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:34,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:34,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:34,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:34,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:35,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:35,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 12:35:35,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:35:35,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:35:35,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:35:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:35,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:35:35,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:35,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:35,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:35,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:35,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:35,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:35,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:35:35,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:35,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:35,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:35,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:35,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 12:35:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:35,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:35,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:35,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:35:35,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:35,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:35:35,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:35:35,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:35,376 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 12:35:35,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902072631] [2020-09-21 12:35:35,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:35,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:35:35,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242608137] [2020-09-21 12:35:35,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:35:35,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:35,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:35:35,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:35:35,379 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 7 states. [2020-09-21 12:35:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:35,587 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2020-09-21 12:35:35,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:35:35,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-09-21 12:35:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:35,589 INFO L225 Difference]: With dead ends: 78 [2020-09-21 12:35:35,589 INFO L226 Difference]: Without dead ends: 54 [2020-09-21 12:35:35,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:35:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-21 12:35:35,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-09-21 12:35:35,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-21 12:35:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-21 12:35:35,598 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 37 [2020-09-21 12:35:35,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:35,598 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-21 12:35:35,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:35:35,599 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-21 12:35:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 12:35:35,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:35,600 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:35,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:35:35,601 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:35,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1724935017, now seen corresponding path program 3 times [2020-09-21 12:35:35,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:35,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229670548] [2020-09-21 12:35:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:35,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:35,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:35,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:36,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:36,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:36,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:36,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 12:35:36,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:35:36,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:35:36,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:36,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:35:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:35:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:36,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:36,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:36,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:36,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:36,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:36,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:35:36,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:36,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:36,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:35:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:36,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:36,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:36,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:35:36,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:36,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:35:36,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:36,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:36,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:35:36,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 36 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-21 12:35:36,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229670548] [2020-09-21 12:35:36,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:36,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:35:36,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277651615] [2020-09-21 12:35:36,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:35:36,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:36,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:35:36,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:35:36,838 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 7 states. [2020-09-21 12:35:37,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:37,239 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2020-09-21 12:35:37,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:35:37,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-09-21 12:35:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:37,241 INFO L225 Difference]: With dead ends: 102 [2020-09-21 12:35:37,241 INFO L226 Difference]: Without dead ends: 79 [2020-09-21 12:35:37,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:35:37,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-21 12:35:37,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 57. [2020-09-21 12:35:37,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-21 12:35:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-09-21 12:35:37,259 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 45 [2020-09-21 12:35:37,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:37,261 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-09-21 12:35:37,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:35:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-09-21 12:35:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 12:35:37,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:37,264 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:37,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:35:37,264 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:37,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:37,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1466769579, now seen corresponding path program 4 times [2020-09-21 12:35:37,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:37,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446767312] [2020-09-21 12:35:37,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:37,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:37,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:37,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:37,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:38,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:38,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 12:35:38,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:35:38,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-21 12:35:38,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:35:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:38,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:35:38,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:38,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:38,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:38,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:38,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:38,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:38,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:35:38,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:38,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:38,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:38,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:38,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:38,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:35:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:38,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:38,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:38,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:35:38,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:38,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:35:38,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:35:38,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:38,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:38,414 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 46 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-21 12:35:38,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446767312] [2020-09-21 12:35:38,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:38,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:35:38,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863577472] [2020-09-21 12:35:38,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:35:38,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:38,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:35:38,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:35:38,423 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 8 states. [2020-09-21 12:35:38,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:38,669 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2020-09-21 12:35:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:35:38,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-09-21 12:35:38,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:38,671 INFO L225 Difference]: With dead ends: 108 [2020-09-21 12:35:38,672 INFO L226 Difference]: Without dead ends: 71 [2020-09-21 12:35:38,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:35:38,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-21 12:35:38,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-09-21 12:35:38,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-21 12:35:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-09-21 12:35:38,682 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 45 [2020-09-21 12:35:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:38,683 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-09-21 12:35:38,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:35:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-09-21 12:35:38,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 12:35:38,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:38,684 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:38,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:35:38,685 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:38,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:38,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1213447371, now seen corresponding path program 5 times [2020-09-21 12:35:38,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:38,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279715127] [2020-09-21 12:35:38,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:38,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:38,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:38,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:39,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:39,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:39,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 12:35:39,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:35:39,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-21 12:35:39,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:39,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:35:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:39,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-21 12:35:39,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:39,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:39,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:39,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:39,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:39,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:35:39,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:39,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:39,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:39,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-21 12:35:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:39,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:39,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:39,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:35:39,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:35:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:39,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:35:39,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 3 proven. 101 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-21 12:35:39,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279715127] [2020-09-21 12:35:39,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:39,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:35:39,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069090944] [2020-09-21 12:35:39,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:35:39,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:39,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:35:39,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:35:39,861 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 9 states. [2020-09-21 12:35:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:40,112 INFO L93 Difference]: Finished difference Result 120 states and 140 transitions. [2020-09-21 12:35:40,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:35:40,112 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-09-21 12:35:40,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:40,113 INFO L225 Difference]: With dead ends: 120 [2020-09-21 12:35:40,113 INFO L226 Difference]: Without dead ends: 79 [2020-09-21 12:35:40,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:35:40,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-21 12:35:40,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-09-21 12:35:40,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-21 12:35:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-09-21 12:35:40,123 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 53 [2020-09-21 12:35:40,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:40,123 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-09-21 12:35:40,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:35:40,124 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-09-21 12:35:40,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:35:40,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:40,125 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 8, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:40,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:35:40,125 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:40,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:40,125 INFO L82 PathProgramCache]: Analyzing trace with hash -97930773, now seen corresponding path program 6 times [2020-09-21 12:35:40,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:40,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727867029] [2020-09-21 12:35:40,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:40,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:40,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:40,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:40,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:40,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:41,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:41,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:35:41,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:35:41,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:35:41,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:35:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:41,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-21 12:35:41,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:41,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:41,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:41,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:41,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:41,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:35:41,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:41,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:41,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:41,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 12:35:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:41,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:41,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:41,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:35:41,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:35:41,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:41,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:35:41,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:41,329 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 3 proven. 156 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-09-21 12:35:41,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727867029] [2020-09-21 12:35:41,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:41,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:35:41,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563061519] [2020-09-21 12:35:41,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:35:41,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:41,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:35:41,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:35:41,331 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 10 states. [2020-09-21 12:35:41,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:41,582 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2020-09-21 12:35:41,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:35:41,583 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-09-21 12:35:41,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:41,584 INFO L225 Difference]: With dead ends: 126 [2020-09-21 12:35:41,584 INFO L226 Difference]: Without dead ends: 81 [2020-09-21 12:35:41,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2020-09-21 12:35:41,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-21 12:35:41,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-21 12:35:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-21 12:35:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2020-09-21 12:35:41,604 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 61 [2020-09-21 12:35:41,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:41,604 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2020-09-21 12:35:41,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:35:41,604 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2020-09-21 12:35:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-21 12:35:41,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:41,605 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:41,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:35:41,608 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:41,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:41,609 INFO L82 PathProgramCache]: Analyzing trace with hash -618561525, now seen corresponding path program 7 times [2020-09-21 12:35:41,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:41,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70732395] [2020-09-21 12:35:41,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:41,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:41,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:41,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:41,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:42,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:42,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:42,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:42,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-21 12:35:42,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:35:42,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-21 12:35:42,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:35:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-21 12:35:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:42,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:42,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:42,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:42,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:42,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:35:42,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:42,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:42,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:42,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:35:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:42,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:42,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:42,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:35:42,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:42,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:35:42,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:35:42,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 159 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-09-21 12:35:42,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70732395] [2020-09-21 12:35:42,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:42,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:35:42,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925376698] [2020-09-21 12:35:42,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:35:42,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:42,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:35:42,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:35:42,852 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand 7 states. [2020-09-21 12:35:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:43,067 INFO L93 Difference]: Finished difference Result 109 states and 127 transitions. [2020-09-21 12:35:43,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:35:43,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-09-21 12:35:43,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:43,069 INFO L225 Difference]: With dead ends: 109 [2020-09-21 12:35:43,070 INFO L226 Difference]: Without dead ends: 107 [2020-09-21 12:35:43,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:35:43,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-21 12:35:43,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2020-09-21 12:35:43,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-21 12:35:43,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-09-21 12:35:43,091 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 69 [2020-09-21 12:35:43,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:43,092 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-09-21 12:35:43,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:35:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-09-21 12:35:43,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-21 12:35:43,093 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:43,093 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 16, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:43,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:35:43,097 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:43,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:43,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1650306840, now seen corresponding path program 8 times [2020-09-21 12:35:43,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:43,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67183028] [2020-09-21 12:35:43,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:43,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:43,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:43,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:43,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:43,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:44,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:44,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-21 12:35:44,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:35:44,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:35:44,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:35:44,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:44,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-09-21 12:35:44,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:44,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:44,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:44,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:44,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:44,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:44,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:35:44,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 12:35:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:44,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:44,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:44,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:35:44,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:44,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:35:44,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:44,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:44,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:35:44,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:44,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 12:35:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:44,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:44,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:35:44,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:44,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:35:44,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:44,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:44,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:44,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:35:44,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 4 proven. 316 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2020-09-21 12:35:44,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67183028] [2020-09-21 12:35:44,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:44,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:35:44,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296131663] [2020-09-21 12:35:44,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:35:44,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:44,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:35:44,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:35:44,318 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 7 states. [2020-09-21 12:35:44,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:44,494 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2020-09-21 12:35:44,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:35:44,495 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2020-09-21 12:35:44,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:44,495 INFO L225 Difference]: With dead ends: 105 [2020-09-21 12:35:44,496 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:35:44,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:35:44,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:35:44,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:35:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:35:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:35:44,497 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2020-09-21 12:35:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:44,498 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:35:44,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:35:44,498 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:35:44,498 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:35:44,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:35:44,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:35:44,856 INFO L271 CegarLoopResult]: At program point L118(line 118) the Hoare annotation is: true [2020-09-21 12:35:44,856 INFO L268 CegarLoopResult]: For program point L118-1(line 118) no Hoare annotation was computed. [2020-09-21 12:35:44,856 INFO L268 CegarLoopResult]: For program point L127-2(lines 127 133) no Hoare annotation was computed. [2020-09-21 12:35:44,856 INFO L271 CegarLoopResult]: At program point L127-3(lines 127 133) the Hoare annotation is: true [2020-09-21 12:35:44,856 INFO L268 CegarLoopResult]: For program point L119-2(lines 119 126) no Hoare annotation was computed. [2020-09-21 12:35:44,856 INFO L271 CegarLoopResult]: At program point L119-3(lines 119 126) the Hoare annotation is: true [2020-09-21 12:35:44,857 INFO L268 CegarLoopResult]: For program point L119-4(lines 119 126) no Hoare annotation was computed. [2020-09-21 12:35:44,857 INFO L268 CegarLoopResult]: For program point L144-2(lines 144 150) no Hoare annotation was computed. [2020-09-21 12:35:44,857 INFO L271 CegarLoopResult]: At program point L144-3(lines 144 150) the Hoare annotation is: true [2020-09-21 12:35:44,857 INFO L268 CegarLoopResult]: For program point L144-4(lines 144 150) no Hoare annotation was computed. [2020-09-21 12:35:44,857 INFO L268 CegarLoopResult]: For program point L136-2(lines 136 142) no Hoare annotation was computed. [2020-09-21 12:35:44,857 INFO L271 CegarLoopResult]: At program point L136-3(lines 136 142) the Hoare annotation is: true [2020-09-21 12:35:44,857 INFO L268 CegarLoopResult]: For program point L136-4(lines 136 142) no Hoare annotation was computed. [2020-09-21 12:35:44,858 INFO L268 CegarLoopResult]: For program point ludcmpEXIT(lines 109 153) no Hoare annotation was computed. [2020-09-21 12:35:44,858 INFO L264 CegarLoopResult]: At program point ludcmpENTRY(lines 109 153) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-21 12:35:44,858 INFO L268 CegarLoopResult]: For program point ludcmpFINAL(lines 109 153) no Hoare annotation was computed. [2020-09-21 12:35:44,858 INFO L268 CegarLoopResult]: For program point L130-2(lines 130 131) no Hoare annotation was computed. [2020-09-21 12:35:44,858 INFO L271 CegarLoopResult]: At program point L130-3(lines 130 131) the Hoare annotation is: true [2020-09-21 12:35:44,858 INFO L268 CegarLoopResult]: For program point L130-4(lines 130 131) no Hoare annotation was computed. [2020-09-21 12:35:44,858 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-09-21 12:35:44,859 INFO L268 CegarLoopResult]: For program point L122-1(lines 122 124) no Hoare annotation was computed. [2020-09-21 12:35:44,859 INFO L268 CegarLoopResult]: For program point L147-2(lines 147 148) no Hoare annotation was computed. [2020-09-21 12:35:44,859 INFO L271 CegarLoopResult]: At program point L147-3(lines 147 148) the Hoare annotation is: true [2020-09-21 12:35:44,859 INFO L268 CegarLoopResult]: For program point L147-4(lines 147 148) no Hoare annotation was computed. [2020-09-21 12:35:44,859 INFO L268 CegarLoopResult]: For program point L139-2(lines 139 140) no Hoare annotation was computed. [2020-09-21 12:35:44,859 INFO L271 CegarLoopResult]: At program point L139-3(lines 139 140) the Hoare annotation is: true [2020-09-21 12:35:44,860 INFO L268 CegarLoopResult]: For program point L139-4(lines 139 140) no Hoare annotation was computed. [2020-09-21 12:35:44,860 INFO L268 CegarLoopResult]: For program point L123-2(lines 123 124) no Hoare annotation was computed. [2020-09-21 12:35:44,860 INFO L271 CegarLoopResult]: At program point L123-3(lines 123 124) the Hoare annotation is: true [2020-09-21 12:35:44,860 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-09-21 12:35:44,860 INFO L268 CegarLoopResult]: For program point L116-2(lines 116 134) no Hoare annotation was computed. [2020-09-21 12:35:44,860 INFO L271 CegarLoopResult]: At program point L116-3(lines 116 134) the Hoare annotation is: true [2020-09-21 12:35:44,860 INFO L268 CegarLoopResult]: For program point L116-4(lines 116 134) no Hoare annotation was computed. [2020-09-21 12:35:44,860 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:35:44,862 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#x~0.offset| |old(~#x~0.offset)|) (= |old(#memory_real)| |#memory_real|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |old(#length)| |#length|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-21 12:35:44,862 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:35:44,862 INFO L268 CegarLoopResult]: For program point L78(lines 78 79) no Hoare annotation was computed. [2020-09-21 12:35:44,862 INFO L268 CegarLoopResult]: For program point L78-2(lines 78 79) no Hoare annotation was computed. [2020-09-21 12:35:44,863 INFO L268 CegarLoopResult]: For program point fabsEXIT(lines 74 81) no Hoare annotation was computed. [2020-09-21 12:35:44,863 INFO L271 CegarLoopResult]: At program point fabsENTRY(lines 74 81) the Hoare annotation is: true [2020-09-21 12:35:44,864 INFO L268 CegarLoopResult]: For program point fabsFINAL(lines 74 81) no Hoare annotation was computed. [2020-09-21 12:35:44,864 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:35:44,864 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 12:35:44,864 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:35:44,864 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:35:44,864 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-09-21 12:35:44,864 INFO L268 CegarLoopResult]: For program point L97-2(line 97) no Hoare annotation was computed. [2020-09-21 12:35:44,865 INFO L268 CegarLoopResult]: For program point L91-2(lines 91 102) no Hoare annotation was computed. [2020-09-21 12:35:44,865 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 83 107) no Hoare annotation was computed. [2020-09-21 12:35:44,865 INFO L264 CegarLoopResult]: At program point L91-3(lines 91 102) the Hoare annotation is: (and (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-21 12:35:44,865 INFO L271 CegarLoopResult]: At program point L91-4(lines 91 102) the Hoare annotation is: true [2020-09-21 12:35:44,865 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 83 107) no Hoare annotation was computed. [2020-09-21 12:35:44,866 INFO L268 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2020-09-21 12:35:44,866 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-09-21 12:35:44,866 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 83 107) the Hoare annotation is: (and (= |old(#memory_real)| |#memory_real|) (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-21 12:35:44,866 INFO L268 CegarLoopResult]: For program point L94-2(lines 94 99) no Hoare annotation was computed. [2020-09-21 12:35:44,867 INFO L264 CegarLoopResult]: At program point L94-3(lines 94 99) the Hoare annotation is: (and (< main_~i~0 50) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-21 12:35:44,867 INFO L264 CegarLoopResult]: At program point L94-4(lines 94 99) the Hoare annotation is: (and (< main_~i~0 50) (<= main_~n~0 5) (<= 5 main_~n~0)) [2020-09-21 12:35:44,867 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-21 12:35:44,867 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-21 12:35:44,867 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-21 12:35:44,867 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-21 12:35:44,868 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-21 12:35:44,868 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-21 12:35:44,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:35:44 BoogieIcfgContainer [2020-09-21 12:35:44,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:35:44,900 INFO L168 Benchmark]: Toolchain (without parser) took 17369.12 ms. Allocated memory was 147.8 MB in the beginning and 346.0 MB in the end (delta: 198.2 MB). Free memory was 102.6 MB in the beginning and 260.6 MB in the end (delta: -158.0 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:44,901 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:35:44,902 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.05 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.9 MB in the beginning and 181.7 MB in the end (delta: -79.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:44,903 INFO L168 Benchmark]: Boogie Preprocessor took 67.71 ms. Allocated memory is still 204.5 MB. Free memory was 181.7 MB in the beginning and 179.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:44,905 INFO L168 Benchmark]: RCFGBuilder took 604.99 ms. Allocated memory is still 204.5 MB. Free memory was 179.1 MB in the beginning and 151.4 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:44,911 INFO L168 Benchmark]: TraceAbstraction took 16110.89 ms. Allocated memory was 204.5 MB in the beginning and 346.0 MB in the end (delta: 141.6 MB). Free memory was 151.4 MB in the beginning and 260.6 MB in the end (delta: -109.2 MB). Peak memory consumption was 32.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:44,916 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 577.05 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 101.9 MB in the beginning and 181.7 MB in the end (delta: -79.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.71 ms. Allocated memory is still 204.5 MB. Free memory was 181.7 MB in the beginning and 179.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 604.99 ms. Allocated memory is still 204.5 MB. Free memory was 179.1 MB in the beginning and 151.4 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16110.89 ms. Allocated memory was 204.5 MB in the beginning and 346.0 MB in the end (delta: 141.6 MB). Free memory was 151.4 MB in the beginning and 260.6 MB in the end (delta: -109.2 MB). Peak memory consumption was 32.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 116]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: (i < 50 && n <= 5) && 5 <= n - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 144]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 123]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: n <= 5 && 5 <= n - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 15.6s, OverallIterations: 12, TraceHistogramMax: 18, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 236 SDtfs, 278 SDslu, 355 SDs, 0 SdLazy, 839 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 163 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred 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, 70 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 60 PreInvPairs, 109 NumberOfFragments, 96 HoareAnnotationTreeSize, 60 FomulaSimplifications, 1447 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 21 FomulaSimplificationsInter, 172 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 497 NumberOfCodeBlocks, 497 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 485 ConstructedInterpolants, 0 QuantifiedInterpolants, 96514 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 724/1522 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...