/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test14.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:51:21,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:51:21,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:51:21,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:51:21,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:51:21,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:51:21,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:51:21,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:51:21,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:51:21,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:51:21,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:51:21,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:51:21,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:51:21,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:51:21,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:51:21,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:51:21,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:51:21,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:51:21,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:51:21,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:51:21,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:51:21,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:51:21,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:51:21,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:51:21,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:51:21,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:51:21,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:51:21,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:51:21,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:51:21,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:51:21,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:51:21,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:51:21,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:51:21,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:51:21,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:51:21,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:51:21,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:51:21,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:51:21,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:51:21,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:51:21,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:51:21,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:51:22,041 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:51:22,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:51:22,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:51:22,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:51:22,044 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:51:22,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:51:22,045 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:51:22,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:51:22,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:51:22,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:51:22,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:51:22,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:51:22,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:51:22,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:51:22,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:51:22,048 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:51:22,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:51:22,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:51:22,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:51:22,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:51:22,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:51:22,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:51:22,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:51:22,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:51:22,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:51:22,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:51:22,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:51:22,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:51:22,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:51:22,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:51:22,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:51:22,650 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:51:22,657 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:51:22,659 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:51:22,660 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:51:22,661 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test14.c [2020-09-24 23:51:22,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6d4e1bb3/49aeb7b6c20d4616a32f9f0092743657/FLAG1de6eed9b [2020-09-24 23:51:23,332 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:51:23,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test14.c [2020-09-24 23:51:23,340 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6d4e1bb3/49aeb7b6c20d4616a32f9f0092743657/FLAG1de6eed9b [2020-09-24 23:51:23,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6d4e1bb3/49aeb7b6c20d4616a32f9f0092743657 [2020-09-24 23:51:23,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:51:23,756 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:51:23,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:51:23,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:51:23,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:51:23,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:51:23" (1/1) ... [2020-09-24 23:51:23,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c364e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:23, skipping insertion in model container [2020-09-24 23:51:23,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:51:23" (1/1) ... [2020-09-24 23:51:23,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:51:23,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:51:24,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:51:24,074 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:51:24,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:51:24,113 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:51:24,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:24 WrapperNode [2020-09-24 23:51:24,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:51:24,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:51:24,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:51:24,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:51:24,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:24" (1/1) ... [2020-09-24 23:51:24,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:24" (1/1) ... [2020-09-24 23:51:24,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:24" (1/1) ... [2020-09-24 23:51:24,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:24" (1/1) ... [2020-09-24 23:51:24,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:24" (1/1) ... [2020-09-24 23:51:24,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:24" (1/1) ... [2020-09-24 23:51:24,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:24" (1/1) ... [2020-09-24 23:51:24,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:51:24,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:51:24,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:51:24,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:51:24,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:51:24,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:51:24,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:51:24,337 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-09-24 23:51:24,337 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:51:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:51:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:51:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 23:51:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-09-24 23:51:24,338 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:51:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:51:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 23:51:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:51:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:51:24,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:51:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:51:24,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:51:24,671 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:51:24,672 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:51:24,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:51:24 BoogieIcfgContainer [2020-09-24 23:51:24,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:51:24,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:51:24,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:51:24,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:51:24,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:51:23" (1/3) ... [2020-09-24 23:51:24,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42478110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:51:24, skipping insertion in model container [2020-09-24 23:51:24,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:24" (2/3) ... [2020-09-24 23:51:24,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42478110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:51:24, skipping insertion in model container [2020-09-24 23:51:24,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:51:24" (3/3) ... [2020-09-24 23:51:24,689 INFO L109 eAbstractionObserver]: Analyzing ICFG test14.c [2020-09-24 23:51:24,704 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:51:24,715 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:51:24,740 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:51:24,786 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:51:24,786 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:51:24,786 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:51:24,787 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:51:24,787 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:51:24,787 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:51:24,787 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:51:24,787 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:51:24,814 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 23:51:24,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 23:51:24,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:24,825 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] [2020-09-24 23:51:24,825 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:24,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:24,832 INFO L82 PathProgramCache]: Analyzing trace with hash 465652526, now seen corresponding path program 1 times [2020-09-24 23:51:24,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:24,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785916987] [2020-09-24 23:51:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:25,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:25,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:25,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:25,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 23:51:25,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:51:25,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-09-24 23:51:25,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:25,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:51:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:51:25,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 23:51:25,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:51:25,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:25,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:25,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:25,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:25,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:25,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 23:51:25,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:25,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:25,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:25,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:25,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 23:51:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:25,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:25,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:25,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:51:25,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:25,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 23:51:25,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:25,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:51:25,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:25,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:25,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785916987] [2020-09-24 23:51:25,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:25,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 23:51:25,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883096380] [2020-09-24 23:51:25,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:51:25,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:25,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:51:25,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:51:25,888 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 6 states. [2020-09-24 23:51:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:26,206 INFO L93 Difference]: Finished difference Result 83 states and 86 transitions. [2020-09-24 23:51:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:51:26,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-09-24 23:51:26,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:26,230 INFO L225 Difference]: With dead ends: 83 [2020-09-24 23:51:26,230 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 23:51:26,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:51:26,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 23:51:26,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-24 23:51:26,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 23:51:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-09-24 23:51:26,305 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 43 [2020-09-24 23:51:26,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:26,307 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-09-24 23:51:26,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:51:26,307 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-09-24 23:51:26,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 23:51:26,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:26,310 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] [2020-09-24 23:51:26,310 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:51:26,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:26,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1782210472, now seen corresponding path program 1 times [2020-09-24 23:51:26,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:26,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197811072] [2020-09-24 23:51:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:26,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:26,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:26,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:51:26,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:51:26,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-09-24 23:51:26,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:51:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 23:51:26,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:51:26,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:26,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:26,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:26,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:26,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:26,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:26,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 23:51:26,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:26,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:26,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:26,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 23:51:26,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 23:51:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:26,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:26,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:26,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:51:26,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:26,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:51:26,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:26,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:26,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:26,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:26,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:26,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197811072] [2020-09-24 23:51:26,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:26,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:51:26,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714853796] [2020-09-24 23:51:26,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:51:26,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:26,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:51:26,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:51:26,879 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 5 states. [2020-09-24 23:51:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:27,022 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-09-24 23:51:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:51:27,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-24 23:51:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:27,024 INFO L225 Difference]: With dead ends: 59 [2020-09-24 23:51:27,024 INFO L226 Difference]: Without dead ends: 51 [2020-09-24 23:51:27,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:51:27,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-24 23:51:27,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-24 23:51:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-24 23:51:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2020-09-24 23:51:27,040 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 46 [2020-09-24 23:51:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:27,041 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2020-09-24 23:51:27,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:51:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2020-09-24 23:51:27,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 23:51:27,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:27,046 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] [2020-09-24 23:51:27,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:51:27,046 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:27,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:27,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1590234488, now seen corresponding path program 1 times [2020-09-24 23:51:27,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:27,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631648599] [2020-09-24 23:51:27,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:27,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:27,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:27,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:27,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-24 23:51:27,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:51:27,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 458 [2020-09-24 23:51:27,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:27,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:51:27,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-24 23:51:27,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 23:51:27,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:27,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:27,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:27,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:27,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:27,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 23:51:27,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:27,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 23:51:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:27,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:27,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:27,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:51:27,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:27,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:51:27,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:27,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:27,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:27,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631648599] [2020-09-24 23:51:27,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:27,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:51:27,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600553691] [2020-09-24 23:51:27,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:51:27,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:27,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:51:27,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:51:27,709 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 8 states. [2020-09-24 23:51:27,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:27,939 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-09-24 23:51:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:51:27,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-09-24 23:51:27,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:27,941 INFO L225 Difference]: With dead ends: 51 [2020-09-24 23:51:27,941 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 23:51:27,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:51:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 23:51:27,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 23:51:27,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 23:51:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 23:51:27,944 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-09-24 23:51:27,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:27,944 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 23:51:27,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:51:27,945 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 23:51:27,945 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 23:51:27,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:51:27,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 23:51:28,072 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 23:51:28,072 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 23:51:28,072 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line 5) no Hoare annotation was computed. [2020-09-24 23:51:28,073 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#b~0.offset| |old(~#b~0.offset)|) (= |old(#length)| |#length|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 23:51:28,073 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 23:51:28,073 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 23:51:28,073 INFO L268 CegarLoopResult]: For program point L5-2(line 5) no Hoare annotation was computed. [2020-09-24 23:51:28,074 INFO L268 CegarLoopResult]: For program point L5-3(line 5) no Hoare annotation was computed. [2020-09-24 23:51:28,074 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 23:51:28,074 INFO L268 CegarLoopResult]: For program point get_dummyFINAL(lines 7 10) no Hoare annotation was computed. [2020-09-24 23:51:28,074 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 23:51:28,074 INFO L271 CegarLoopResult]: At program point get_dummyENTRY(lines 7 10) the Hoare annotation is: true [2020-09-24 23:51:28,074 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 23:51:28,075 INFO L268 CegarLoopResult]: For program point L9-3(line 9) no Hoare annotation was computed. [2020-09-24 23:51:28,075 INFO L268 CegarLoopResult]: For program point L9-4(line 9) no Hoare annotation was computed. [2020-09-24 23:51:28,075 INFO L268 CegarLoopResult]: For program point L9-5(line 9) no Hoare annotation was computed. [2020-09-24 23:51:28,075 INFO L268 CegarLoopResult]: For program point get_dummyEXIT(lines 7 10) no Hoare annotation was computed. [2020-09-24 23:51:28,075 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 23:51:28,075 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 23:51:28,075 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 23:51:28,076 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 23:51:28,076 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 27) no Hoare annotation was computed. [2020-09-24 23:51:28,076 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 23:51:28,076 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 23:51:28,076 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 23:51:28,076 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 23:51:28,077 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-09-24 23:51:28,077 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 23:51:28,077 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-24 23:51:28,077 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 23:51:28,077 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 23:51:28,077 INFO L268 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2020-09-24 23:51:28,077 INFO L268 CegarLoopResult]: For program point L19-7(line 19) no Hoare annotation was computed. [2020-09-24 23:51:28,078 INFO L268 CegarLoopResult]: For program point L19-8(line 19) no Hoare annotation was computed. [2020-09-24 23:51:28,078 INFO L268 CegarLoopResult]: For program point L19-9(line 19) no Hoare annotation was computed. [2020-09-24 23:51:28,078 INFO L268 CegarLoopResult]: For program point L19-10(line 19) no Hoare annotation was computed. [2020-09-24 23:51:28,078 INFO L268 CegarLoopResult]: For program point L19-11(line 19) no Hoare annotation was computed. [2020-09-24 23:51:28,078 INFO L268 CegarLoopResult]: For program point L19-12(line 19) no Hoare annotation was computed. [2020-09-24 23:51:28,078 INFO L264 CegarLoopResult]: At program point L20(lines 12 27) the Hoare annotation is: false [2020-09-24 23:51:28,079 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 23:51:28,079 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-24 23:51:28,079 INFO L268 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-09-24 23:51:28,079 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (not (= main_~pc~0.base 0)) (not (= |main_~#c~0.base| 0))) [2020-09-24 23:51:28,079 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 23:51:28,079 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 23:51:28,080 INFO L268 CegarLoopResult]: For program point L17-3(line 17) no Hoare annotation was computed. [2020-09-24 23:51:28,080 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 23:51:28,080 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 27) no Hoare annotation was computed. [2020-09-24 23:51:28,080 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 23:51:28,080 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-24 23:51:28,080 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-24 23:51:28,081 INFO L268 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-09-24 23:51:28,081 INFO L268 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-09-24 23:51:28,081 INFO L268 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-09-24 23:51:28,081 INFO L268 CegarLoopResult]: For program point L13-7(line 13) no Hoare annotation was computed. [2020-09-24 23:51:28,081 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-09-24 23:51:28,082 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 27) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-09-24 23:51:28,082 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 23:51:28,082 INFO L268 CegarLoopResult]: For program point L18(lines 18 19) no Hoare annotation was computed. [2020-09-24 23:51:28,082 INFO L268 CegarLoopResult]: For program point L18-1(lines 18 19) no Hoare annotation was computed. [2020-09-24 23:51:28,082 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 21) no Hoare annotation was computed. [2020-09-24 23:51:28,082 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 23:51:28,083 INFO L268 CegarLoopResult]: For program point L18-4(lines 18 19) no Hoare annotation was computed. [2020-09-24 23:51:28,083 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 23:51:28,083 INFO L268 CegarLoopResult]: For program point L18-5(lines 18 19) no Hoare annotation was computed. [2020-09-24 23:51:28,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:51:28 BoogieIcfgContainer [2020-09-24 23:51:28,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:51:28,113 INFO L168 Benchmark]: Toolchain (without parser) took 4354.67 ms. Allocated memory was 144.2 MB in the beginning and 253.2 MB in the end (delta: 109.1 MB). Free memory was 100.6 MB in the beginning and 174.7 MB in the end (delta: -74.1 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:28,114 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 23:51:28,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.56 ms. Allocated memory is still 144.2 MB. Free memory was 100.0 MB in the beginning and 90.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:28,120 INFO L168 Benchmark]: Boogie Preprocessor took 128.27 ms. Allocated memory was 144.2 MB in the beginning and 199.8 MB in the end (delta: 55.6 MB). Free memory was 90.3 MB in the beginning and 177.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:28,121 INFO L168 Benchmark]: RCFGBuilder took 435.87 ms. Allocated memory is still 199.8 MB. Free memory was 177.5 MB in the beginning and 158.0 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:28,125 INFO L168 Benchmark]: TraceAbstraction took 3422.63 ms. Allocated memory was 199.8 MB in the beginning and 253.2 MB in the end (delta: 53.5 MB). Free memory was 157.3 MB in the beginning and 174.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:28,134 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.56 ms. Allocated memory is still 144.2 MB. Free memory was 100.0 MB in the beginning and 90.3 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.27 ms. Allocated memory was 144.2 MB in the beginning and 199.8 MB in the end (delta: 55.6 MB). Free memory was 90.3 MB in the beginning and 177.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.87 ms. Allocated memory is still 199.8 MB. Free memory was 177.5 MB in the beginning and 158.0 MB in the end (delta: 19.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3422.63 ms. Allocated memory was 199.8 MB in the beginning and 253.2 MB in the end (delta: 53.5 MB). Free memory was 157.3 MB in the beginning and 174.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 25]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 136 SDtfs, 114 SDslu, 264 SDs, 0 SdLazy, 273 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 45 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 14553 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...