/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:35:41,858 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:35:41,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:35:41,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:35:41,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:35:41,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:35:41,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:35:41,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:35:41,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:35:41,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:35:41,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:35:41,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:35:41,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:35:41,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:35:41,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:35:41,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:35:41,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:35:41,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:35:41,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:35:41,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:35:41,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:35:41,914 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:35:41,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:35:41,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:35:41,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:35:41,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:35:41,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:35:41,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:35:41,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:35:41,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:35:41,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:35:41,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:35:41,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:35:41,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:35:41,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:35:41,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:35:41,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:35:41,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:35:41,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:35:41,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:35:41,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:35:41,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:35:41,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:35:41,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:35:41,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:35:41,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:35:41,960 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:35:41,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:35:41,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:35:41,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:35:41,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:35:41,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:35:41,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:35:41,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:35:41,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:35:41,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:35:41,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:35:41,963 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:35:41,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:35:41,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:35:41,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:35:41,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:35:41,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:35:41,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:35:41,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:35:41,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:35:41,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:35:41,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:35:41,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:35:41,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:35:41,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:35:41,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:35:42,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:35:42,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:35:42,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:35:42,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:35:42,547 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:35:42,548 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2020-09-21 12:35:42,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96b70fe49/ce4cca5998c2491c80cdb7f65e8dded5/FLAG89c75f4e3 [2020-09-21 12:35:43,207 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:35:43,208 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2020-09-21 12:35:43,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96b70fe49/ce4cca5998c2491c80cdb7f65e8dded5/FLAG89c75f4e3 [2020-09-21 12:35:43,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96b70fe49/ce4cca5998c2491c80cdb7f65e8dded5 [2020-09-21 12:35:43,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:35:43,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:35:43,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:35:43,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:35:43,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:35:43,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:35:43" (1/1) ... [2020-09-21 12:35:43,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cbeb4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:43, skipping insertion in model container [2020-09-21 12:35:43,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:35:43" (1/1) ... [2020-09-21 12:35:43,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:35:43,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:35:43,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:35:43,883 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:35:43,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:35:43,917 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:35:43,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:43 WrapperNode [2020-09-21 12:35:43,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:35:43,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:35:43,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:35:43,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:35:44,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:43" (1/1) ... [2020-09-21 12:35:44,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:43" (1/1) ... [2020-09-21 12:35:44,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:43" (1/1) ... [2020-09-21 12:35:44,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:43" (1/1) ... [2020-09-21 12:35:44,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:43" (1/1) ... [2020-09-21 12:35:44,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:43" (1/1) ... [2020-09-21 12:35:44,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:43" (1/1) ... [2020-09-21 12:35:44,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:35:44,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:35:44,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:35:44,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:35:44,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:35:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:35:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:35:44,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:35:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2020-09-21 12:35:44,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:35:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:35:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:35:44,126 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2020-09-21 12:35:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:35:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:35:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:35:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:35:44,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:35:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:35:44,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:35:44,457 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:35:44,458 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 12:35:44,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:35:44 BoogieIcfgContainer [2020-09-21 12:35:44,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:35:44,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:35:44,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:35:44,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:35:44,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:35:43" (1/3) ... [2020-09-21 12:35:44,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5037f131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:35:44, skipping insertion in model container [2020-09-21 12:35:44,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:35:43" (2/3) ... [2020-09-21 12:35:44,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5037f131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:35:44, skipping insertion in model container [2020-09-21 12:35:44,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:35:44" (3/3) ... [2020-09-21 12:35:44,486 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2020-09-21 12:35:44,498 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:35:44,510 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:35:44,534 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:35:44,563 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:35:44,563 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:35:44,563 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:35:44,563 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:35:44,564 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:35:44,564 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:35:44,564 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:35:44,564 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:35:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-09-21 12:35:44,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:35:44,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:44,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:44,593 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:44,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:44,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1626450083, now seen corresponding path program 1 times [2020-09-21 12:35:44,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:44,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186291382] [2020-09-21 12:35:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:44,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:45,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:45,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 12:35:45,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-09-21 12:35:45,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:35:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:45,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:35:45,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:35:45,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:45,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:45,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:45,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:35:45,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:45,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:45,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:45,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:35:45,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186291382] [2020-09-21 12:35:45,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:45,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:35:45,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681290575] [2020-09-21 12:35:45,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:35:45,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:45,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:35:45,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:35:45,443 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 8 states. [2020-09-21 12:35:45,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:45,792 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2020-09-21 12:35:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:35:45,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-09-21 12:35:45,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:45,807 INFO L225 Difference]: With dead ends: 55 [2020-09-21 12:35:45,808 INFO L226 Difference]: Without dead ends: 26 [2020-09-21 12:35:45,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:35:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-21 12:35:45,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-09-21 12:35:45,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-21 12:35:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-09-21 12:35:45,885 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2020-09-21 12:35:45,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:45,886 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-09-21 12:35:45,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:35:45,886 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-09-21 12:35:45,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 12:35:45,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:45,888 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:45,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:35:45,889 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:45,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:45,889 INFO L82 PathProgramCache]: Analyzing trace with hash -519824651, now seen corresponding path program 1 times [2020-09-21 12:35:45,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:45,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837583857] [2020-09-21 12:35:45,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:45,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:46,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:46,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:46,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:35:46,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:35:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-09-21 12:35:46,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:46,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:35:46,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:46,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:35:46,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:35:46,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:46,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:46,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:46,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:46,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:46,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:35:46,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:46,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:46,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:46,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:46,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:46,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:35:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:46,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:46,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:46,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:35:46,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:46,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:35:46,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:46,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:35:46,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:46,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:35:46,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837583857] [2020-09-21 12:35:46,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:35:46,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:35:46,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434074935] [2020-09-21 12:35:46,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:35:46,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:46,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:35:46,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:35:46,786 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states. [2020-09-21 12:35:47,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:47,140 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-09-21 12:35:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:35:47,140 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-09-21 12:35:47,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:47,142 INFO L225 Difference]: With dead ends: 36 [2020-09-21 12:35:47,142 INFO L226 Difference]: Without dead ends: 34 [2020-09-21 12:35:47,144 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:35:47,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-21 12:35:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-21 12:35:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 12:35:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-21 12:35:47,155 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2020-09-21 12:35:47,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:47,155 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-21 12:35:47,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:35:47,156 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-21 12:35:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 12:35:47,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:35:47,157 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:35:47,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:35:47,158 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:35:47,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:35:47,158 INFO L82 PathProgramCache]: Analyzing trace with hash -2027370867, now seen corresponding path program 2 times [2020-09-21 12:35:47,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:35:47,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040759609] [2020-09-21 12:35:47,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:35:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:47,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:47,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:47,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 12:35:47,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:35:47,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-09-21 12:35:47,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:35:47,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:35:47,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:35:47,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:47,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:35:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:47,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:47,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:47,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:35:47,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:47,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:35:47,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:47,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:35:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:47,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:35:47,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:47,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:35:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:47,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:47,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:47,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:35:47,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:47,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:35:47,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:47,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:47,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:35:47,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:35:47,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 12:35:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:35:47,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:35:47,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:35:47,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:35:47,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:35:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:35:47,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:35:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:35:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:35:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:35:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:35:47,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-21 12:35:47,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040759609] [2020-09-21 12:35:47,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:35:47,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:35:47,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063158240] [2020-09-21 12:35:47,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:35:47,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:35:47,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:35:47,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:35:47,924 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2020-09-21 12:35:48,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:35:48,101 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-09-21 12:35:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:35:48,101 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-09-21 12:35:48,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:35:48,102 INFO L225 Difference]: With dead ends: 35 [2020-09-21 12:35:48,102 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 12:35:48,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:35:48,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 12:35:48,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 12:35:48,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 12:35:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 12:35:48,105 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-09-21 12:35:48,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:35:48,105 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 12:35:48,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:35:48,105 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 12:35:48,105 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 12:35:48,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:35:48,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 12:35:48,527 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 30 [2020-09-21 12:35:48,531 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:35:48,531 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~tmp~0.base |old(~tmp~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(#valid)| |#valid|)) [2020-09-21 12:35:48,531 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:35:48,532 INFO L271 CegarLoopResult]: At program point glob2ENTRY(lines 14 25) the Hoare annotation is: true [2020-09-21 12:35:48,532 INFO L268 CegarLoopResult]: For program point glob2EXIT(lines 14 25) no Hoare annotation was computed. [2020-09-21 12:35:48,532 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (= ~tmp~0.base glob2_~p~0.base)) (.cse1 (+ |glob2_#in~pathbuf.offset| 4))) (or (and (<= glob2_~p~0.offset ~tmp~0.offset) .cse0 (<= glob2_~pathlim.offset glob2_~p~0.offset)) (and (= glob2_~p~0.offset 0) (<= glob2_~pathlim.offset (+ glob2_~p~0.offset 4)) .cse0) (not (<= |glob2_#in~pathlim.offset| .cse1)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (= |glob2_#in~pathbuf.offset| 0)) (not (<= .cse1 ~tmp~0.offset)))) [2020-09-21 12:35:48,532 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-21 12:35:48,533 INFO L268 CegarLoopResult]: For program point L18-2(lines 18 22) no Hoare annotation was computed. [2020-09-21 12:35:48,533 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 22) the Hoare annotation is: (let ((.cse0 (= ~tmp~0.base glob2_~p~0.base)) (.cse1 (+ |glob2_#in~pathbuf.offset| 4))) (or (and (<= glob2_~p~0.offset ~tmp~0.offset) .cse0 (<= glob2_~pathlim.offset glob2_~p~0.offset)) (and (= glob2_~p~0.offset 0) (<= glob2_~pathlim.offset (+ glob2_~p~0.offset 4)) .cse0) (not (<= |glob2_#in~pathlim.offset| .cse1)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (= |glob2_#in~pathbuf.offset| 0)) (<= (+ glob2_~pathlim.offset 4) glob2_~p~0.offset) (not (<= .cse1 ~tmp~0.offset)))) [2020-09-21 12:35:48,533 INFO L268 CegarLoopResult]: For program point L18-4(lines 18 22) no Hoare annotation was computed. [2020-09-21 12:35:48,533 INFO L268 CegarLoopResult]: For program point glob2FINAL(lines 14 25) no Hoare annotation was computed. [2020-09-21 12:35:48,533 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 12:35:48,534 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 12:35:48,534 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 12:35:48,534 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 12:35:48,534 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 27 38) the Hoare annotation is: (and (= |old(~tmp~0.base)| ~tmp~0.base) (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(#valid)| |#valid|)) [2020-09-21 12:35:48,534 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 38) no Hoare annotation was computed. [2020-09-21 12:35:48,535 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 38) no Hoare annotation was computed. [2020-09-21 12:35:48,535 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (+ |main_~#pathbuf~0.offset| 4))) (and (<= main_~bound~0.offset .cse0) (<= .cse0 ~tmp~0.offset) (= ~tmp~0.base |main_~#pathbuf~0.base|) (= |main_~#pathbuf~0.offset| 0))) [2020-09-21 12:35:48,535 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-09-21 12:35:48,535 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-21 12:35:48,535 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-21 12:35:48,536 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-21 12:35:48,536 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-21 12:35:48,536 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-21 12:35:48,536 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-21 12:35:48,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:35:48 BoogieIcfgContainer [2020-09-21 12:35:48,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:35:48,564 INFO L168 Benchmark]: Toolchain (without parser) took 5011.28 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 103.7 MB in the beginning and 203.1 MB in the end (delta: -99.4 MB). Peak memory consumption was 112.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:48,566 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-21 12:35:48,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.05 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 93.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:48,568 INFO L168 Benchmark]: Boogie Preprocessor took 126.85 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 93.4 MB in the beginning and 179.7 MB in the end (delta: -86.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:48,569 INFO L168 Benchmark]: RCFGBuilder took 417.91 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 165.2 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:48,570 INFO L168 Benchmark]: TraceAbstraction took 4088.37 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 164.5 MB in the beginning and 203.1 MB in the end (delta: -38.6 MB). Peak memory consumption was 111.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:35:48,574 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 359.05 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 93.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.85 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 93.4 MB in the beginning and 179.7 MB in the end (delta: -86.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 417.91 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 165.2 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4088.37 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 164.5 MB in the beginning and 203.1 MB in the end (delta: -38.6 MB). Peak memory consumption was 111.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (((((((p <= tmp && tmp == p) && pathlim <= p) || ((p == 0 && pathlim <= p + 4) && tmp == p)) || !(pathlim <= pathbuf + 4)) || !(tmp == pathbuf)) || !(pathbuf == 0)) || pathlim + 4 <= p) || !(pathbuf + 4 <= tmp) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 82 SDslu, 93 SDs, 0 SdLazy, 235 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 138 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 291 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 5348 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 18/20 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...