/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:55:24,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:55:24,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:55:24,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:55:24,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:55:24,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:55:24,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:55:24,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:55:24,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:55:24,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:55:24,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:55:24,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:55:24,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:55:24,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:55:24,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:55:24,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:55:24,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:55:24,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:55:24,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:55:24,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:55:24,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:55:24,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:55:24,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:55:24,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:55:24,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:55:24,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:55:24,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:55:24,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:55:24,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:55:24,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:55:24,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:55:24,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:55:24,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:55:24,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:55:24,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:55:24,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:55:24,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:55:24,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:55:24,904 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:55:24,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:55:24,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:55:24,907 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 [2020-08-21 23:55:24,933 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:55:24,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:55:24,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:55:24,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:55:24,935 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:55:24,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:55:24,935 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:55:24,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:55:24,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:55:24,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:55:24,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:55:24,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:55:24,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:55:24,937 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:55:24,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:55:24,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:55:24,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:55:24,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:55:24,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:55:24,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:55:24,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:55:24,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:55:24,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:55:24,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:55:24,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:55:24,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:55:24,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:55:24,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:55:24,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:55:24,940 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:55:25,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:55:25,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:55:25,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:55:25,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:55:25,288 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:55:25,289 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-08-21 23:55:25,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8a247648/749c6b89fc84427f9bb0e098fb79a13e/FLAGb38f8e774 [2020-08-21 23:55:25,905 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:55:25,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.p+lhb-reducer.c [2020-08-21 23:55:25,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8a247648/749c6b89fc84427f9bb0e098fb79a13e/FLAGb38f8e774 [2020-08-21 23:55:26,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8a247648/749c6b89fc84427f9bb0e098fb79a13e [2020-08-21 23:55:26,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:55:26,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:55:26,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:55:26,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:55:26,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:55:26,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:55:26" (1/1) ... [2020-08-21 23:55:26,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32b5b388 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:55:26, skipping insertion in model container [2020-08-21 23:55:26,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:55:26" (1/1) ... [2020-08-21 23:55:26,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:55:26,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:55:26,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:55:26,594 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:55:26,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:55:26,769 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:55:26,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:55:26 WrapperNode [2020-08-21 23:55:26,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:55:26,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:55:26,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:55:26,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:55:26,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:55:26" (1/1) ... [2020-08-21 23:55:26,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:55:26" (1/1) ... [2020-08-21 23:55:26,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:55:26" (1/1) ... [2020-08-21 23:55:26,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:55:26" (1/1) ... [2020-08-21 23:55:26,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:55:26" (1/1) ... [2020-08-21 23:55:26,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:55:26" (1/1) ... [2020-08-21 23:55:26,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:55:26" (1/1) ... [2020-08-21 23:55:26,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:55:26,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:55:26,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:55:26,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:55:26,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:55:26" (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 [2020-08-21 23:55:26,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:55:26,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:55:26,907 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 23:55:26,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:55:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:55:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 23:55:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 23:55:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 23:55:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:55:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:55:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:55:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:55:27,754 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:55:27,755 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 23:55:27,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:55:27 BoogieIcfgContainer [2020-08-21 23:55:27,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:55:27,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:55:27,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:55:27,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:55:27,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:55:26" (1/3) ... [2020-08-21 23:55:27,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2ea4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:55:27, skipping insertion in model container [2020-08-21 23:55:27,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:55:26" (2/3) ... [2020-08-21 23:55:27,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2ea4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:55:27, skipping insertion in model container [2020-08-21 23:55:27,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:55:27" (3/3) ... [2020-08-21 23:55:27,773 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.p+lhb-reducer.c [2020-08-21 23:55:27,783 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:55:27,791 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2020-08-21 23:55:27,805 INFO L251 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2020-08-21 23:55:27,831 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:55:27,832 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:55:27,832 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:55:27,832 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:55:27,832 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:55:27,833 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:55:27,833 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:55:27,833 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:55:27,858 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states. [2020-08-21 23:55:27,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-21 23:55:27,865 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:27,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:27,867 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:27,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:27,873 INFO L82 PathProgramCache]: Analyzing trace with hash 692755954, now seen corresponding path program 1 times [2020-08-21 23:55:27,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:27,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935769484] [2020-08-21 23:55:27,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:28,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:28,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935769484] [2020-08-21 23:55:28,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:28,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:55:28,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898043712] [2020-08-21 23:55:28,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:55:28,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:28,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:55:28,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:55:28,148 INFO L87 Difference]: Start difference. First operand 125 states. Second operand 5 states. [2020-08-21 23:55:28,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:28,815 INFO L93 Difference]: Finished difference Result 143 states and 221 transitions. [2020-08-21 23:55:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:55:28,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-08-21 23:55:28,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:28,833 INFO L225 Difference]: With dead ends: 143 [2020-08-21 23:55:28,833 INFO L226 Difference]: Without dead ends: 123 [2020-08-21 23:55:28,838 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 [2020-08-21 23:55:28,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-21 23:55:28,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 118. [2020-08-21 23:55:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-21 23:55:28,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 139 transitions. [2020-08-21 23:55:28,885 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 139 transitions. Word has length 11 [2020-08-21 23:55:28,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:28,886 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 139 transitions. [2020-08-21 23:55:28,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:55:28,886 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 139 transitions. [2020-08-21 23:55:28,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-21 23:55:28,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:28,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:28,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:55:28,888 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:28,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:28,888 INFO L82 PathProgramCache]: Analyzing trace with hash 601163, now seen corresponding path program 1 times [2020-08-21 23:55:28,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:28,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560709017] [2020-08-21 23:55:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:28,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:28,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560709017] [2020-08-21 23:55:28,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:28,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:55:28,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226944220] [2020-08-21 23:55:28,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:55:28,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:28,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:55:28,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:55:28,978 INFO L87 Difference]: Start difference. First operand 118 states and 139 transitions. Second operand 5 states. [2020-08-21 23:55:29,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:29,358 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2020-08-21 23:55:29,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:55:29,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-08-21 23:55:29,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:29,364 INFO L225 Difference]: With dead ends: 121 [2020-08-21 23:55:29,364 INFO L226 Difference]: Without dead ends: 113 [2020-08-21 23:55:29,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-08-21 23:55:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-21 23:55:29,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-08-21 23:55:29,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-21 23:55:29,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2020-08-21 23:55:29,395 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 12 [2020-08-21 23:55:29,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:29,396 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2020-08-21 23:55:29,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:55:29,396 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2020-08-21 23:55:29,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-21 23:55:29,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:29,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:29,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:55:29,402 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:29,402 INFO L82 PathProgramCache]: Analyzing trace with hash -438066310, now seen corresponding path program 1 times [2020-08-21 23:55:29,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:29,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219644397] [2020-08-21 23:55:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:29,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:29,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [219644397] [2020-08-21 23:55:29,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:29,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:55:29,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862742786] [2020-08-21 23:55:29,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:55:29,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:29,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:55:29,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:55:29,485 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand 6 states. [2020-08-21 23:55:29,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:29,844 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2020-08-21 23:55:29,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:55:29,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-08-21 23:55:29,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:29,846 INFO L225 Difference]: With dead ends: 113 [2020-08-21 23:55:29,846 INFO L226 Difference]: Without dead ends: 111 [2020-08-21 23:55:29,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:55:29,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-08-21 23:55:29,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-08-21 23:55:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-21 23:55:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2020-08-21 23:55:29,857 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 15 [2020-08-21 23:55:29,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:29,857 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2020-08-21 23:55:29,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:55:29,858 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2020-08-21 23:55:29,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 23:55:29,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:29,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:29,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:55:29,859 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:29,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:29,860 INFO L82 PathProgramCache]: Analyzing trace with hash -695150622, now seen corresponding path program 1 times [2020-08-21 23:55:29,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:29,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11964244] [2020-08-21 23:55:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:29,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:29,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11964244] [2020-08-21 23:55:29,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:29,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:55:29,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402664349] [2020-08-21 23:55:29,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:55:29,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:29,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:55:29,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:55:29,944 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand 5 states. [2020-08-21 23:55:30,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:30,267 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2020-08-21 23:55:30,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 23:55:30,268 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-21 23:55:30,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:30,271 INFO L225 Difference]: With dead ends: 111 [2020-08-21 23:55:30,272 INFO L226 Difference]: Without dead ends: 107 [2020-08-21 23:55:30,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:55:30,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-08-21 23:55:30,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-08-21 23:55:30,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-08-21 23:55:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 119 transitions. [2020-08-21 23:55:30,296 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 119 transitions. Word has length 16 [2020-08-21 23:55:30,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:30,297 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 119 transitions. [2020-08-21 23:55:30,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:55:30,297 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 119 transitions. [2020-08-21 23:55:30,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 23:55:30,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:30,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:30,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:55:30,304 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:30,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:30,304 INFO L82 PathProgramCache]: Analyzing trace with hash -61564757, now seen corresponding path program 1 times [2020-08-21 23:55:30,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:30,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653853416] [2020-08-21 23:55:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:30,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:30,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653853416] [2020-08-21 23:55:30,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:30,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:55:30,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310643384] [2020-08-21 23:55:30,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:55:30,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:30,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:55:30,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:55:30,400 INFO L87 Difference]: Start difference. First operand 107 states and 119 transitions. Second operand 6 states. [2020-08-21 23:55:30,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:30,758 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2020-08-21 23:55:30,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:55:30,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 23:55:30,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:30,761 INFO L225 Difference]: With dead ends: 125 [2020-08-21 23:55:30,761 INFO L226 Difference]: Without dead ends: 123 [2020-08-21 23:55:30,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:55:30,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-08-21 23:55:30,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2020-08-21 23:55:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-21 23:55:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2020-08-21 23:55:30,770 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 17 [2020-08-21 23:55:30,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:30,771 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2020-08-21 23:55:30,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:55:30,771 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2020-08-21 23:55:30,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 23:55:30,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:30,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:30,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:55:30,772 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:30,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:30,773 INFO L82 PathProgramCache]: Analyzing trace with hash -60025557, now seen corresponding path program 1 times [2020-08-21 23:55:30,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:30,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572464408] [2020-08-21 23:55:30,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:30,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:30,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:30,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572464408] [2020-08-21 23:55:30,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:30,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:55:30,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560167245] [2020-08-21 23:55:30,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:55:30,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:30,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:55:30,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:55:30,852 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand 6 states. [2020-08-21 23:55:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:31,166 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2020-08-21 23:55:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:55:31,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-08-21 23:55:31,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:31,168 INFO L225 Difference]: With dead ends: 105 [2020-08-21 23:55:31,169 INFO L226 Difference]: Without dead ends: 103 [2020-08-21 23:55:31,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:55:31,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-08-21 23:55:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-08-21 23:55:31,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-08-21 23:55:31,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2020-08-21 23:55:31,179 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 17 [2020-08-21 23:55:31,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:31,180 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2020-08-21 23:55:31,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:55:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2020-08-21 23:55:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 23:55:31,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:31,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:31,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:55:31,184 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:31,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:31,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1907138927, now seen corresponding path program 1 times [2020-08-21 23:55:31,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:31,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734315317] [2020-08-21 23:55:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:31,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:31,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:31,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734315317] [2020-08-21 23:55:31,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:31,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:55:31,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852522948] [2020-08-21 23:55:31,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:55:31,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:31,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:55:31,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:55:31,309 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand 6 states. [2020-08-21 23:55:31,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:31,611 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-08-21 23:55:31,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:55:31,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 23:55:31,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:31,613 INFO L225 Difference]: With dead ends: 124 [2020-08-21 23:55:31,613 INFO L226 Difference]: Without dead ends: 122 [2020-08-21 23:55:31,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:55:31,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-08-21 23:55:31,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2020-08-21 23:55:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-21 23:55:31,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2020-08-21 23:55:31,631 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 18 [2020-08-21 23:55:31,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:31,631 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2020-08-21 23:55:31,631 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:55:31,631 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2020-08-21 23:55:31,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 23:55:31,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:31,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:31,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:55:31,632 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:31,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:31,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1908504347, now seen corresponding path program 1 times [2020-08-21 23:55:31,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:31,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428938217] [2020-08-21 23:55:31,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:31,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:31,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428938217] [2020-08-21 23:55:31,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:31,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:55:31,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420286521] [2020-08-21 23:55:31,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:55:31,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:31,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:55:31,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:55:31,766 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand 6 states. [2020-08-21 23:55:32,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:32,094 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2020-08-21 23:55:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:55:32,095 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 23:55:32,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:32,096 INFO L225 Difference]: With dead ends: 116 [2020-08-21 23:55:32,096 INFO L226 Difference]: Without dead ends: 114 [2020-08-21 23:55:32,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:55:32,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-21 23:55:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2020-08-21 23:55:32,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-08-21 23:55:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2020-08-21 23:55:32,111 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 18 [2020-08-21 23:55:32,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:32,111 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2020-08-21 23:55:32,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:55:32,114 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2020-08-21 23:55:32,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 23:55:32,117 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:32,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:32,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:55:32,118 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:32,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1860789097, now seen corresponding path program 1 times [2020-08-21 23:55:32,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:32,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201951460] [2020-08-21 23:55:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:32,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:32,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:32,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201951460] [2020-08-21 23:55:32,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:32,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:55:32,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371742110] [2020-08-21 23:55:32,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:55:32,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:32,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:55:32,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:55:32,185 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand 6 states. [2020-08-21 23:55:32,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:32,481 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2020-08-21 23:55:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 23:55:32,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-21 23:55:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:32,482 INFO L225 Difference]: With dead ends: 99 [2020-08-21 23:55:32,482 INFO L226 Difference]: Without dead ends: 95 [2020-08-21 23:55:32,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:55:32,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-08-21 23:55:32,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-08-21 23:55:32,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-21 23:55:32,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-08-21 23:55:32,495 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 18 [2020-08-21 23:55:32,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:32,495 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-08-21 23:55:32,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:55:32,496 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-08-21 23:55:32,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 23:55:32,496 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:32,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:32,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:55:32,497 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:32,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:32,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1008238558, now seen corresponding path program 1 times [2020-08-21 23:55:32,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:32,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801547553] [2020-08-21 23:55:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:32,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801547553] [2020-08-21 23:55:32,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:32,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:55:32,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855835523] [2020-08-21 23:55:32,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:55:32,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:32,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:55:32,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:55:32,600 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 6 states. [2020-08-21 23:55:32,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:32,968 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2020-08-21 23:55:32,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:55:32,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-21 23:55:32,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:32,969 INFO L225 Difference]: With dead ends: 111 [2020-08-21 23:55:32,969 INFO L226 Difference]: Without dead ends: 109 [2020-08-21 23:55:32,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:55:32,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-08-21 23:55:32,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2020-08-21 23:55:32,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-08-21 23:55:32,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-08-21 23:55:32,975 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 19 [2020-08-21 23:55:32,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:32,975 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-08-21 23:55:32,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:55:32,976 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-08-21 23:55:32,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 23:55:32,976 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:32,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:32,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:55:32,977 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:32,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:32,978 INFO L82 PathProgramCache]: Analyzing trace with hash -121545016, now seen corresponding path program 1 times [2020-08-21 23:55:32,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:32,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541474461] [2020-08-21 23:55:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:33,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:33,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541474461] [2020-08-21 23:55:33,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:33,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:55:33,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439663337] [2020-08-21 23:55:33,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:55:33,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:33,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:55:33,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:55:33,026 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 5 states. [2020-08-21 23:55:33,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:33,221 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-08-21 23:55:33,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 23:55:33,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-08-21 23:55:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:33,222 INFO L225 Difference]: With dead ends: 93 [2020-08-21 23:55:33,222 INFO L226 Difference]: Without dead ends: 91 [2020-08-21 23:55:33,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:55:33,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-08-21 23:55:33,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-08-21 23:55:33,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-21 23:55:33,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2020-08-21 23:55:33,229 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 20 [2020-08-21 23:55:33,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:33,229 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2020-08-21 23:55:33,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:55:33,229 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2020-08-21 23:55:33,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 23:55:33,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:33,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:33,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 23:55:33,235 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:33,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:33,237 INFO L82 PathProgramCache]: Analyzing trace with hash 527074935, now seen corresponding path program 1 times [2020-08-21 23:55:33,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:33,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907295675] [2020-08-21 23:55:33,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:33,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:33,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907295675] [2020-08-21 23:55:33,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:33,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:55:33,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61361971] [2020-08-21 23:55:33,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:55:33,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:33,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:55:33,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:55:33,301 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 5 states. [2020-08-21 23:55:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:33,559 INFO L93 Difference]: Finished difference Result 91 states and 103 transitions. [2020-08-21 23:55:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 23:55:33,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-21 23:55:33,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:33,560 INFO L225 Difference]: With dead ends: 91 [2020-08-21 23:55:33,560 INFO L226 Difference]: Without dead ends: 58 [2020-08-21 23:55:33,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:55:33,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-21 23:55:33,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-08-21 23:55:33,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-21 23:55:33,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2020-08-21 23:55:33,563 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 21 [2020-08-21 23:55:33,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:33,563 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2020-08-21 23:55:33,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:55:33,563 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2020-08-21 23:55:33,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 23:55:33,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:33,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:33,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 23:55:33,565 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:33,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:33,566 INFO L82 PathProgramCache]: Analyzing trace with hash 2058833109, now seen corresponding path program 1 times [2020-08-21 23:55:33,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:33,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904121329] [2020-08-21 23:55:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:33,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:33,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904121329] [2020-08-21 23:55:33,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:33,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 23:55:33,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681074314] [2020-08-21 23:55:33,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 23:55:33,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:33,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 23:55:33,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:55:33,781 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 14 states. [2020-08-21 23:55:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:34,163 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-08-21 23:55:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 23:55:34,163 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-08-21 23:55:34,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:34,165 INFO L225 Difference]: With dead ends: 67 [2020-08-21 23:55:34,165 INFO L226 Difference]: Without dead ends: 65 [2020-08-21 23:55:34,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2020-08-21 23:55:34,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-08-21 23:55:34,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56. [2020-08-21 23:55:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-21 23:55:34,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-08-21 23:55:34,170 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 48 [2020-08-21 23:55:34,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:34,170 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-08-21 23:55:34,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 23:55:34,170 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-08-21 23:55:34,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-21 23:55:34,171 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:34,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:34,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 23:55:34,172 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:34,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:34,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2058819207, now seen corresponding path program 1 times [2020-08-21 23:55:34,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:34,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010774311] [2020-08-21 23:55:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:34,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:34,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:34,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010774311] [2020-08-21 23:55:34,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:34,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-21 23:55:34,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074213731] [2020-08-21 23:55:34,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-21 23:55:34,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:34,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-21 23:55:34,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:55:34,354 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 14 states. [2020-08-21 23:55:34,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:34,652 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-08-21 23:55:34,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 23:55:34,652 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 48 [2020-08-21 23:55:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:34,653 INFO L225 Difference]: With dead ends: 56 [2020-08-21 23:55:34,653 INFO L226 Difference]: Without dead ends: 54 [2020-08-21 23:55:34,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=191, Invalid=361, Unknown=0, NotChecked=0, Total=552 [2020-08-21 23:55:34,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-21 23:55:34,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-21 23:55:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-21 23:55:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2020-08-21 23:55:34,658 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 48 [2020-08-21 23:55:34,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:34,659 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2020-08-21 23:55:34,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-21 23:55:34,659 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2020-08-21 23:55:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-21 23:55:34,660 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:34,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:34,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 23:55:34,660 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:34,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:34,661 INFO L82 PathProgramCache]: Analyzing trace with hash -600679635, now seen corresponding path program 1 times [2020-08-21 23:55:34,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:34,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292127071] [2020-08-21 23:55:34,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:34,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:34,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292127071] [2020-08-21 23:55:34,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:34,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:55:34,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113534168] [2020-08-21 23:55:34,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:55:34,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:34,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:55:34,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:55:34,914 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 6 states. [2020-08-21 23:55:35,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:35,102 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-08-21 23:55:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:55:35,103 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-08-21 23:55:35,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:35,104 INFO L225 Difference]: With dead ends: 62 [2020-08-21 23:55:35,104 INFO L226 Difference]: Without dead ends: 60 [2020-08-21 23:55:35,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 17 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-21 23:55:35,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-21 23:55:35,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2020-08-21 23:55:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 23:55:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-08-21 23:55:35,107 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49 [2020-08-21 23:55:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:35,108 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-08-21 23:55:35,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:55:35,108 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-08-21 23:55:35,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-21 23:55:35,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:55:35,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:55:35,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 23:55:35,109 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:55:35,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:55:35,110 INFO L82 PathProgramCache]: Analyzing trace with hash -601110611, now seen corresponding path program 1 times [2020-08-21 23:55:35,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:55:35,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519621522] [2020-08-21 23:55:35,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:55:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:35,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:55:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:55:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:55:35,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519621522] [2020-08-21 23:55:35,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:55:35,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 23:55:35,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084575668] [2020-08-21 23:55:35,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 23:55:35,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:55:35,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 23:55:35,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 23:55:35,310 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 6 states. [2020-08-21 23:55:35,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:55:35,473 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-08-21 23:55:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 23:55:35,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-08-21 23:55:35,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:55:35,475 INFO L225 Difference]: With dead ends: 52 [2020-08-21 23:55:35,475 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 23:55:35,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 17 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:55:35,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 23:55:35,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 23:55:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 23:55:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 23:55:35,477 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-08-21 23:55:35,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:55:35,493 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 23:55:35,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 23:55:35,493 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 23:55:35,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 23:55:35,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 23:55:35,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 23:55:35,642 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-21 23:55:35,642 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_2624_0~0 |old(~__tmp_2624_0~0)|) (= ~__tmp_2624_1~0 |old(~__tmp_2624_1~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_2598~0 |old(~__return_2598~0)|) (= ~__tmp_3137_1~0 |old(~__tmp_3137_1~0)|) (= ~__tmp_3137_0~0 |old(~__tmp_3137_0~0)|)) [2020-08-21 23:55:35,643 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 23:55:35,643 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 23:55:35,643 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 23:55:35,643 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 23:55:35,643 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 23:55:35,643 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-08-21 23:55:35,643 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-21 23:55:35,643 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-08-21 23:55:35,644 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-08-21 23:55:35,644 INFO L268 CegarLoopResult]: For program point L927(lines 927 939) no Hoare annotation was computed. [2020-08-21 23:55:35,644 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 115) no Hoare annotation was computed. [2020-08-21 23:55:35,644 INFO L268 CegarLoopResult]: For program point L217(line 217) no Hoare annotation was computed. [2020-08-21 23:55:35,644 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 15 1004) no Hoare annotation was computed. [2020-08-21 23:55:35,644 INFO L268 CegarLoopResult]: For program point L663(lines 663 961) no Hoare annotation was computed. [2020-08-21 23:55:35,644 INFO L268 CegarLoopResult]: For program point L432(lines 432 983) no Hoare annotation was computed. [2020-08-21 23:55:35,645 INFO L268 CegarLoopResult]: For program point L267(line 267) no Hoare annotation was computed. [2020-08-21 23:55:35,645 INFO L268 CegarLoopResult]: For program point L647(lines 647 963) no Hoare annotation was computed. [2020-08-21 23:55:35,646 INFO L268 CegarLoopResult]: For program point L383(lines 383 986) no Hoare annotation was computed. [2020-08-21 23:55:35,646 INFO L268 CegarLoopResult]: For program point L20(lines 20 1003) no Hoare annotation was computed. [2020-08-21 23:55:35,646 INFO L268 CegarLoopResult]: For program point L466(lines 466 490) no Hoare annotation was computed. [2020-08-21 23:55:35,646 INFO L268 CegarLoopResult]: For program point L879(lines 879 905) no Hoare annotation was computed. [2020-08-21 23:55:35,646 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 917) no Hoare annotation was computed. [2020-08-21 23:55:35,646 INFO L268 CegarLoopResult]: For program point L169(lines 169 191) no Hoare annotation was computed. [2020-08-21 23:55:35,646 INFO L268 CegarLoopResult]: For program point L681(lines 681 692) no Hoare annotation was computed. [2020-08-21 23:55:35,646 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-08-21 23:55:35,647 INFO L268 CegarLoopResult]: For program point L70(lines 70 286) no Hoare annotation was computed. [2020-08-21 23:55:35,647 INFO L268 CegarLoopResult]: For program point L929(line 929) no Hoare annotation was computed. [2020-08-21 23:55:35,647 INFO L268 CegarLoopResult]: For program point L731(lines 731 955) no Hoare annotation was computed. [2020-08-21 23:55:35,647 INFO L268 CegarLoopResult]: For program point L153(lines 153 232) no Hoare annotation was computed. [2020-08-21 23:55:35,647 INFO L268 CegarLoopResult]: For program point L500(lines 500 977) no Hoare annotation was computed. [2020-08-21 23:55:35,647 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 15 1004) no Hoare annotation was computed. [2020-08-21 23:55:35,647 INFO L268 CegarLoopResult]: For program point L203(lines 203 229) no Hoare annotation was computed. [2020-08-21 23:55:35,647 INFO L268 CegarLoopResult]: For program point L715(lines 715 957) no Hoare annotation was computed. [2020-08-21 23:55:35,647 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 893) no Hoare annotation was computed. [2020-08-21 23:55:35,649 INFO L268 CegarLoopResult]: For program point L451(lines 451 980) no Hoare annotation was computed. [2020-08-21 23:55:35,649 INFO L268 CegarLoopResult]: For program point L864(lines 864 944) no Hoare annotation was computed. [2020-08-21 23:55:35,649 INFO L268 CegarLoopResult]: For program point L253(lines 253 275) no Hoare annotation was computed. [2020-08-21 23:55:35,649 INFO L268 CegarLoopResult]: For program point L534(lines 534 558) no Hoare annotation was computed. [2020-08-21 23:55:35,649 INFO L268 CegarLoopResult]: For program point L881(line 881) no Hoare annotation was computed. [2020-08-21 23:55:35,649 INFO L268 CegarLoopResult]: For program point L749(lines 749 760) no Hoare annotation was computed. [2020-08-21 23:55:35,650 INFO L268 CegarLoopResult]: For program point L171(line 171) no Hoare annotation was computed. [2020-08-21 23:55:35,650 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 205) no Hoare annotation was computed. [2020-08-21 23:55:35,650 INFO L268 CegarLoopResult]: For program point L799(lines 799 949) no Hoare annotation was computed. [2020-08-21 23:55:35,650 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-08-21 23:55:35,650 INFO L268 CegarLoopResult]: For program point L568(lines 568 971) no Hoare annotation was computed. [2020-08-21 23:55:35,650 INFO L268 CegarLoopResult]: For program point L915(lines 915 941) no Hoare annotation was computed. [2020-08-21 23:55:35,650 INFO L268 CegarLoopResult]: For program point L783(lines 783 951) no Hoare annotation was computed. [2020-08-21 23:55:35,651 INFO L268 CegarLoopResult]: For program point L205(line 205) no Hoare annotation was computed. [2020-08-21 23:55:35,651 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 929) no Hoare annotation was computed. [2020-08-21 23:55:35,651 INFO L268 CegarLoopResult]: For program point L519(lines 519 974) no Hoare annotation was computed. [2020-08-21 23:55:35,651 INFO L264 CegarLoopResult]: At program point L866(lines 24 998) the Hoare annotation is: (and (<= main_~main__t~0 main_~main__tagbuf_len~0) (<= 0 main_~main__t~0)) [2020-08-21 23:55:35,651 INFO L268 CegarLoopResult]: For program point L255(line 255) no Hoare annotation was computed. [2020-08-21 23:55:35,651 INFO L268 CegarLoopResult]: For program point L602(lines 602 626) no Hoare annotation was computed. [2020-08-21 23:55:35,651 INFO L268 CegarLoopResult]: For program point L24(lines 24 998) no Hoare annotation was computed. [2020-08-21 23:55:35,651 INFO L268 CegarLoopResult]: For program point L817(lines 817 828) no Hoare annotation was computed. [2020-08-21 23:55:35,652 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 255) no Hoare annotation was computed. [2020-08-21 23:55:35,652 INFO L268 CegarLoopResult]: For program point L636(lines 636 965) no Hoare annotation was computed. [2020-08-21 23:55:35,652 INFO L268 CegarLoopResult]: For program point L917(line 917) no Hoare annotation was computed. [2020-08-21 23:55:35,652 INFO L268 CegarLoopResult]: For program point L851(lines 851 945) no Hoare annotation was computed. [2020-08-21 23:55:35,652 INFO L268 CegarLoopResult]: For program point L141(lines 141 234) no Hoare annotation was computed. [2020-08-21 23:55:35,652 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2020-08-21 23:55:35,652 INFO L268 CegarLoopResult]: For program point L587(lines 587 968) no Hoare annotation was computed. [2020-08-21 23:55:35,652 INFO L268 CegarLoopResult]: For program point L323(lines 323 991) no Hoare annotation was computed. [2020-08-21 23:55:35,652 INFO L268 CegarLoopResult]: For program point L670(lines 670 694) no Hoare annotation was computed. [2020-08-21 23:55:35,653 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 143) no Hoare annotation was computed. [2020-08-21 23:55:35,653 INFO L268 CegarLoopResult]: For program point L307(lines 307 993) no Hoare annotation was computed. [2020-08-21 23:55:35,654 INFO L264 CegarLoopResult]: At program point L902(lines 63 997) the Hoare annotation is: (and (<= 1 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2020-08-21 23:55:35,654 INFO L268 CegarLoopResult]: For program point L704(lines 704 959) no Hoare annotation was computed. [2020-08-21 23:55:35,656 INFO L268 CegarLoopResult]: For program point L341(lines 341 352) no Hoare annotation was computed. [2020-08-21 23:55:35,656 INFO L268 CegarLoopResult]: For program point L143(line 143) no Hoare annotation was computed. [2020-08-21 23:55:35,656 INFO L268 CegarLoopResult]: For program point L655(lines 655 962) no Hoare annotation was computed. [2020-08-21 23:55:35,656 INFO L268 CegarLoopResult]: For program point L44(lines 44 54) no Hoare annotation was computed. [2020-08-21 23:55:35,657 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 267) no Hoare annotation was computed. [2020-08-21 23:55:35,657 INFO L264 CegarLoopResult]: At program point L1002(lines 20 1003) the Hoare annotation is: (or (and (= ~__tmp_2624_0~0 |old(~__tmp_2624_0~0)|) (= ~__tmp_2624_1~0 |old(~__tmp_2624_1~0)|) (= |old(~__return_2598~0)| ~__return_2598~0) (= ~__tmp_3137_1~0 |old(~__tmp_3137_1~0)|) (= ~__tmp_3137_0~0 |old(~__tmp_3137_0~0)|)) (<= 0 main_~main__t~0)) [2020-08-21 23:55:35,657 INFO L268 CegarLoopResult]: For program point L391(lines 391 985) no Hoare annotation was computed. [2020-08-21 23:55:35,657 INFO L268 CegarLoopResult]: For program point L738(lines 738 762) no Hoare annotation was computed. [2020-08-21 23:55:35,657 INFO L268 CegarLoopResult]: For program point L94(lines 94 283) no Hoare annotation was computed. [2020-08-21 23:55:35,657 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 171) no Hoare annotation was computed. [2020-08-21 23:55:35,657 INFO L268 CegarLoopResult]: For program point L375(lines 375 987) no Hoare annotation was computed. [2020-08-21 23:55:35,657 INFO L268 CegarLoopResult]: For program point L772(lines 772 953) no Hoare annotation was computed. [2020-08-21 23:55:35,657 INFO L268 CegarLoopResult]: For program point L409(lines 409 420) no Hoare annotation was computed. [2020-08-21 23:55:35,657 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2020-08-21 23:55:35,658 INFO L268 CegarLoopResult]: For program point L723(lines 723 956) no Hoare annotation was computed. [2020-08-21 23:55:35,658 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-08-21 23:55:35,658 INFO L268 CegarLoopResult]: For program point L459(lines 459 979) no Hoare annotation was computed. [2020-08-21 23:55:35,659 INFO L264 CegarLoopResult]: At program point L938(lines 856 945) the Hoare annotation is: (and (<= 9 main_~main__t~0) (<= main_~main__t~0 main_~main__tagbuf_len~0)) [2020-08-21 23:55:35,659 INFO L268 CegarLoopResult]: For program point L872(lines 872 943) no Hoare annotation was computed. [2020-08-21 23:55:35,659 INFO L268 CegarLoopResult]: For program point L806(lines 806 830) no Hoare annotation was computed. [2020-08-21 23:55:35,659 INFO L268 CegarLoopResult]: For program point L162(lines 162 231) no Hoare annotation was computed. [2020-08-21 23:55:35,659 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 34) no Hoare annotation was computed. [2020-08-21 23:55:35,659 INFO L268 CegarLoopResult]: For program point L63(lines 63 997) no Hoare annotation was computed. [2020-08-21 23:55:35,659 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 15 1004) the Hoare annotation is: (and (= ~__tmp_2624_0~0 |old(~__tmp_2624_0~0)|) (= ~__tmp_2624_1~0 |old(~__tmp_2624_1~0)|) (= |old(~__return_2598~0)| ~__return_2598~0) (= ~__tmp_3137_1~0 |old(~__tmp_3137_1~0)|) (= ~__tmp_3137_0~0 |old(~__tmp_3137_0~0)|)) [2020-08-21 23:55:35,659 INFO L268 CegarLoopResult]: For program point L443(lines 443 981) no Hoare annotation was computed. [2020-08-21 23:55:35,659 INFO L268 CegarLoopResult]: For program point L113(lines 113 121) no Hoare annotation was computed. [2020-08-21 23:55:35,659 INFO L268 CegarLoopResult]: For program point L840(lines 840 947) no Hoare annotation was computed. [2020-08-21 23:55:35,660 INFO L268 CegarLoopResult]: For program point L130(lines 130 282) no Hoare annotation was computed. [2020-08-21 23:55:35,660 INFO L268 CegarLoopResult]: For program point L477(lines 477 488) no Hoare annotation was computed. [2020-08-21 23:55:35,660 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 183) no Hoare annotation was computed. [2020-08-21 23:55:35,660 INFO L268 CegarLoopResult]: For program point L791(lines 791 950) no Hoare annotation was computed. [2020-08-21 23:55:35,660 INFO L268 CegarLoopResult]: For program point L246(lines 246 281) no Hoare annotation was computed. [2020-08-21 23:55:35,660 INFO L268 CegarLoopResult]: For program point L81(lines 81 284) no Hoare annotation was computed. [2020-08-21 23:55:35,660 INFO L268 CegarLoopResult]: For program point L527(lines 527 973) no Hoare annotation was computed. [2020-08-21 23:55:35,660 INFO L268 CegarLoopResult]: For program point L296(lines 296 995) no Hoare annotation was computed. [2020-08-21 23:55:35,660 INFO L268 CegarLoopResult]: For program point L32(lines 32 56) no Hoare annotation was computed. [2020-08-21 23:55:35,660 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2020-08-21 23:55:35,660 INFO L268 CegarLoopResult]: For program point L511(lines 511 975) no Hoare annotation was computed. [2020-08-21 23:55:35,660 INFO L268 CegarLoopResult]: For program point L891(lines 891 903) no Hoare annotation was computed. [2020-08-21 23:55:35,661 INFO L264 CegarLoopResult]: At program point L280(lines 130 282) the Hoare annotation is: (and (<= (+ main_~main__t~0 1) main_~main__tagbuf_len~0) (<= 1 main_~main__t~0)) [2020-08-21 23:55:35,661 INFO L268 CegarLoopResult]: For program point L181(lines 181 189) no Hoare annotation was computed. [2020-08-21 23:55:35,661 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-08-21 23:55:35,661 INFO L268 CegarLoopResult]: For program point L330(lines 330 354) no Hoare annotation was computed. [2020-08-21 23:55:35,661 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-08-21 23:55:35,661 INFO L268 CegarLoopResult]: For program point L545(lines 545 556) no Hoare annotation was computed. [2020-08-21 23:55:35,661 INFO L268 CegarLoopResult]: For program point L215(lines 215 227) no Hoare annotation was computed. [2020-08-21 23:55:35,661 INFO L268 CegarLoopResult]: For program point L595(lines 595 967) no Hoare annotation was computed. [2020-08-21 23:55:35,661 INFO L268 CegarLoopResult]: For program point L364(lines 364 989) no Hoare annotation was computed. [2020-08-21 23:55:35,661 INFO L268 CegarLoopResult]: For program point L265(lines 265 273) no Hoare annotation was computed. [2020-08-21 23:55:35,661 INFO L268 CegarLoopResult]: For program point L579(lines 579 969) no Hoare annotation was computed. [2020-08-21 23:55:35,661 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-08-21 23:55:35,661 INFO L268 CegarLoopResult]: For program point L893(line 893) no Hoare annotation was computed. [2020-08-21 23:55:35,662 INFO L268 CegarLoopResult]: For program point L315(lines 315 992) no Hoare annotation was computed. [2020-08-21 23:55:35,662 INFO L268 CegarLoopResult]: For program point L183(line 183) no Hoare annotation was computed. [2020-08-21 23:55:35,662 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 881) no Hoare annotation was computed. [2020-08-21 23:55:35,662 INFO L268 CegarLoopResult]: For program point L398(lines 398 422) no Hoare annotation was computed. [2020-08-21 23:55:35,663 INFO L268 CegarLoopResult]: For program point L134(lines 134 240) no Hoare annotation was computed. [2020-08-21 23:55:35,663 INFO L268 CegarLoopResult]: For program point L101(lines 101 123) no Hoare annotation was computed. [2020-08-21 23:55:35,663 INFO L268 CegarLoopResult]: For program point L613(lines 613 624) no Hoare annotation was computed. [2020-08-21 23:55:35,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:55:35 BoogieIcfgContainer [2020-08-21 23:55:35,683 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:55:35,686 INFO L168 Benchmark]: Toolchain (without parser) took 9473.00 ms. Allocated memory was 137.9 MB in the beginning and 325.6 MB in the end (delta: 187.7 MB). Free memory was 100.1 MB in the beginning and 264.4 MB in the end (delta: -164.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:55:35,687 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 23:55:35,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 556.47 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 174.8 MB in the end (delta: -74.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-08-21 23:55:35,689 INFO L168 Benchmark]: Boogie Preprocessor took 58.43 ms. Allocated memory is still 201.3 MB. Free memory was 174.8 MB in the beginning and 172.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-21 23:55:35,689 INFO L168 Benchmark]: RCFGBuilder took 934.85 ms. Allocated memory is still 201.3 MB. Free memory was 172.0 MB in the beginning and 122.4 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2020-08-21 23:55:35,690 INFO L168 Benchmark]: TraceAbstraction took 7917.99 ms. Allocated memory was 201.3 MB in the beginning and 325.6 MB in the end (delta: 124.3 MB). Free memory was 121.7 MB in the beginning and 264.4 MB in the end (delta: -142.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 23:55:35,693 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 556.47 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.9 MB in the beginning and 174.8 MB in the end (delta: -74.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.43 ms. Allocated memory is still 201.3 MB. Free memory was 174.8 MB in the beginning and 172.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 934.85 ms. Allocated memory is still 201.3 MB. Free memory was 172.0 MB in the beginning and 122.4 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7917.99 ms. Allocated memory was 201.3 MB in the beginning and 325.6 MB in the end (delta: 124.3 MB). Free memory was 121.7 MB in the beginning and 264.4 MB in the end (delta: -142.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 929]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 183]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 205]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 893]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 217]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 255]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 917]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 881]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 143]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 267]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 103]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 171]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 155]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 115]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 46]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((__tmp_2624_0 == \old(__tmp_2624_0) && __tmp_2624_1 == \old(__tmp_2624_1)) && \old(__return_2598) == __return_2598) && __tmp_3137_1 == \old(__tmp_3137_1)) && __tmp_3137_0 == \old(__tmp_3137_0)) || 0 <= main__t - InvariantResult [Line: 856]: Loop Invariant Derived loop invariant: 9 <= main__t && main__t <= main__tagbuf_len - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: main__t + 1 <= main__tagbuf_len && 1 <= main__t - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: main__t <= main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 <= main__t && main__t <= main__tagbuf_len - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 129 locations, 16 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.6s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 769 SDtfs, 2593 SDslu, 667 SDs, 0 SdLazy, 3420 SolverSat, 507 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 231 GetRequests, 58 SyntacticMatches, 36 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=0, 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, 16 MinimizatonAttempts, 92 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 87 HoareAnnotationTreeSize, 9 FomulaSimplifications, 649 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 396 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 380 ConstructedInterpolants, 0 QuantifiedInterpolants, 43150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 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...