/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:29:37,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:29:37,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:29:37,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:29:37,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:29:37,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:29:37,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:29:37,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:29:37,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:29:37,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:29:37,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:29:37,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:29:37,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:29:37,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:29:37,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:29:37,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:29:37,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:29:37,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:29:37,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:29:37,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:29:37,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:29:37,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:29:37,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:29:37,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:29:37,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:29:37,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:29:37,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:29:37,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:29:37,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:29:37,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:29:37,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:29:37,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:29:37,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:29:37,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:29:37,982 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:29:37,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:29:37,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:29:37,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:29:37,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:29:37,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:29:37,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:29:37,987 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 18:29:38,030 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:29:38,030 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:29:38,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:29:38,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:29:38,032 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:29:38,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:29:38,033 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:29:38,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:29:38,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:29:38,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:29:38,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:29:38,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:29:38,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:29:38,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:29:38,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:29:38,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:29:38,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:29:38,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:29:38,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:29:38,038 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:29:38,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:29:38,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:29:38,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:29:38,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:29:38,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:29:38,039 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:29:38,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:29:38,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:29:38,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:29:38,040 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:29:38,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:29:38,547 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:29:38,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:29:38,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:29:38,557 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:29:38,558 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-24 18:29:38,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6b08c268/b74a98a7c4cb4c4a838940fdb38a1e0b/FLAG87b0c2672 [2020-09-24 18:29:39,144 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:29:39,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-24 18:29:39,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6b08c268/b74a98a7c4cb4c4a838940fdb38a1e0b/FLAG87b0c2672 [2020-09-24 18:29:39,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a6b08c268/b74a98a7c4cb4c4a838940fdb38a1e0b [2020-09-24 18:29:39,491 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:29:39,495 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:29:39,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:29:39,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:29:39,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:29:39,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78523b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39, skipping insertion in model container [2020-09-24 18:29:39,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:29:39,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:29:39,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:29:39,781 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:29:39,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:29:39,835 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:29:39,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39 WrapperNode [2020-09-24 18:29:39,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:29:39,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:29:39,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:29:39,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:29:39,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39" (1/1) ... [2020-09-24 18:29:39,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:29:39,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:29:39,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:29:39,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:29:39,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39" (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 18:29:40,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:29:40,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:29:40,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:29:40,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:29:40,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:29:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-24 18:29:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:29:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:29:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:29:40,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:29:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:29:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:29:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:29:40,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:29:40,410 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:29:40,411 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 18:29:40,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:29:40 BoogieIcfgContainer [2020-09-24 18:29:40,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:29:40,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:29:40,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:29:40,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:29:40,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:29:39" (1/3) ... [2020-09-24 18:29:40,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6530f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:29:40, skipping insertion in model container [2020-09-24 18:29:40,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:29:39" (2/3) ... [2020-09-24 18:29:40,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6530f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:29:40, skipping insertion in model container [2020-09-24 18:29:40,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:29:40" (3/3) ... [2020-09-24 18:29:40,434 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail_tTflag_arr_one_loop.c [2020-09-24 18:29:40,445 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:29:40,454 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:29:40,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:29:40,503 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:29:40,504 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:29:40,504 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:29:40,504 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:29:40,504 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:29:40,504 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:29:40,504 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:29:40,504 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:29:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-24 18:29:40,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 18:29:40,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:40,537 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] [2020-09-24 18:29:40,538 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:40,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:40,545 INFO L82 PathProgramCache]: Analyzing trace with hash 435763839, now seen corresponding path program 1 times [2020-09-24 18:29:40,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:40,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987915118] [2020-09-24 18:29:40,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:40,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:40,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:40,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:41,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:41,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:29:41,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:29:41,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-24 18:29:41,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:41,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 18:29:41,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:41,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:29:41,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:41,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:41,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:41,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:29:41,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:41,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:29:41,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:41,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:41,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:41,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:41,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:41,246 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 18:29:41,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987915118] [2020-09-24 18:29:41,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:29:41,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:29:41,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489057866] [2020-09-24 18:29:41,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:29:41,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:41,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:29:41,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:29:41,280 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2020-09-24 18:29:41,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:41,420 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-09-24 18:29:41,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:29:41,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-09-24 18:29:41,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:41,434 INFO L225 Difference]: With dead ends: 81 [2020-09-24 18:29:41,434 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 18:29:41,439 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:29:41,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 18:29:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 18:29:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:29:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 18:29:41,490 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 27 [2020-09-24 18:29:41,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:41,490 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 18:29:41,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:29:41,491 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 18:29:41,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-24 18:29:41,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:41,492 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] [2020-09-24 18:29:41,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:29:41,493 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:41,494 INFO L82 PathProgramCache]: Analyzing trace with hash 424681587, now seen corresponding path program 1 times [2020-09-24 18:29:41,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:41,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967274364] [2020-09-24 18:29:41,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:41,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:41,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:41,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:41,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 18:29:41,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:29:41,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-24 18:29:41,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:41,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:29:41,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:29:41,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 18:29:41,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:41,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:41,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:41,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:29:41,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:41,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:29:41,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:41,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:41,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:41,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:41,887 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 18:29:41,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967274364] [2020-09-24 18:29:41,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:29:41,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:29:41,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815019167] [2020-09-24 18:29:41,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:29:41,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:41,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:29:41,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:29:41,899 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 4 states. [2020-09-24 18:29:42,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:42,034 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-09-24 18:29:42,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:29:42,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-24 18:29:42,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:42,038 INFO L225 Difference]: With dead ends: 73 [2020-09-24 18:29:42,038 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 18:29:42,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:29:42,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 18:29:42,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-09-24 18:29:42,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-24 18:29:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-24 18:29:42,050 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 27 [2020-09-24 18:29:42,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:42,050 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-24 18:29:42,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:29:42,050 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-24 18:29:42,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 18:29:42,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:29:42,052 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] [2020-09-24 18:29:42,052 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:29:42,052 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:29:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:29:42,053 INFO L82 PathProgramCache]: Analyzing trace with hash 164402036, now seen corresponding path program 1 times [2020-09-24 18:29:42,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:29:42,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564771366] [2020-09-24 18:29:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:29:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:42,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:42,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:42,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:42,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 18:29:42,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:29:42,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-24 18:29:42,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:42,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:29:42,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 18:29:42,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:29:42,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:42,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:29:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:29:42,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:29:42,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:29:42,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:29:42,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:29:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:29:42,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:29:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:29:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:29:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:29:42,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:29:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:29:42,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564771366] [2020-09-24 18:29:42,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:29:42,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:29:42,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773892475] [2020-09-24 18:29:42,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:29:42,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:29:42,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:29:42,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:29:42,509 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 5 states. [2020-09-24 18:29:42,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:29:42,623 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-24 18:29:42,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:29:42,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-24 18:29:42,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:29:42,625 INFO L225 Difference]: With dead ends: 43 [2020-09-24 18:29:42,625 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:29:42,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:29:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:29:42,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:29:42,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:29:42,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:29:42,627 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-09-24 18:29:42,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:29:42,627 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:29:42,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:29:42,628 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:29:42,628 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:29:42,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:29:42,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:29:42,687 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 18:29:42,687 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 18:29:42,688 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:29:42,688 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 18:29:42,688 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:29:42,688 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:29:42,688 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:29:42,689 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:29:42,689 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:29:42,689 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 18:29:42,689 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-24 18:29:42,689 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-24 18:29:42,690 INFO L271 CegarLoopResult]: At program point L27-2(lines 27 33) the Hoare annotation is: true [2020-09-24 18:29:42,690 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 37) no Hoare annotation was computed. [2020-09-24 18:29:42,690 INFO L271 CegarLoopResult]: At program point L27-3(lines 27 33) the Hoare annotation is: true [2020-09-24 18:29:42,690 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 18:29:42,690 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-24 18:29:42,690 INFO L268 CegarLoopResult]: For program point L19-2(line 19) no Hoare annotation was computed. [2020-09-24 18:29:42,690 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 18:29:42,691 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 18:29:42,691 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 18:29:42,691 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-09-24 18:29:42,691 INFO L268 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-09-24 18:29:42,691 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 18:29:42,691 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 18:29:42,692 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 18:29:42,692 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 18:29:42,692 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 18:29:42,692 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-24 18:29:42,692 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 18:29:42,692 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 37) no Hoare annotation was computed. [2020-09-24 18:29:42,693 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 18:29:42,693 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 37) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 18:29:42,693 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 18:29:42,693 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-24 18:29:42,693 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-24 18:29:42,694 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 18:29:42,694 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 18:29:42,694 INFO L268 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-09-24 18:29:42,694 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 18:29:42,694 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed. [2020-09-24 18:29:42,694 INFO L268 CegarLoopResult]: For program point L18-5(line 18) no Hoare annotation was computed. [2020-09-24 18:29:42,695 INFO L271 CegarLoopResult]: At program point L18-6(lines 18 20) the Hoare annotation is: true [2020-09-24 18:29:42,695 INFO L268 CegarLoopResult]: For program point L18-7(lines 18 20) no Hoare annotation was computed. [2020-09-24 18:29:42,695 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 18:29:42,695 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-24 18:29:42,695 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-24 18:29:42,695 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 18:29:42,696 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-24 18:29:42,696 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-24 18:29:42,696 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-09-24 18:29:42,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:29:42 BoogieIcfgContainer [2020-09-24 18:29:42,710 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:29:42,713 INFO L168 Benchmark]: Toolchain (without parser) took 3219.50 ms. Allocated memory was 141.6 MB in the beginning and 232.3 MB in the end (delta: 90.7 MB). Free memory was 104.7 MB in the beginning and 131.5 MB in the end (delta: -26.8 MB). Peak memory consumption was 63.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:42,714 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:29:42,715 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.23 ms. Allocated memory is still 141.6 MB. Free memory was 104.0 MB in the beginning and 94.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:42,717 INFO L168 Benchmark]: Boogie Preprocessor took 145.43 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 93.9 MB in the beginning and 183.6 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:42,717 INFO L168 Benchmark]: RCFGBuilder took 434.29 ms. Allocated memory is still 205.5 MB. Free memory was 183.6 MB in the beginning and 166.9 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:42,719 INFO L168 Benchmark]: TraceAbstraction took 2291.26 ms. Allocated memory was 205.5 MB in the beginning and 232.3 MB in the end (delta: 26.7 MB). Free memory was 166.2 MB in the beginning and 131.5 MB in the end (delta: 34.7 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2020-09-24 18:29:42,724 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 340.23 ms. Allocated memory is still 141.6 MB. Free memory was 104.0 MB in the beginning and 94.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 145.43 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 93.9 MB in the beginning and 183.6 MB in the end (delta: -89.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.29 ms. Allocated memory is still 205.5 MB. Free memory was 183.6 MB in the beginning and 166.9 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2291.26 ms. Allocated memory was 205.5 MB in the beginning and 232.3 MB in the end (delta: 26.7 MB). Free memory was 166.2 MB in the beginning and 131.5 MB in the end (delta: 34.7 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 21 SDslu, 115 SDs, 0 SdLazy, 128 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 19 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 3598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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...