/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/volatile_alias.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:04,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:04,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:04,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:04,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:04,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:04,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:04,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:04,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:04,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:04,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:04,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:04,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:04,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:04,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:04,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:04,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:04,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:04,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:04,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:04,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:04,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:04,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:04,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:04,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:04,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:04,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:04,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:04,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:05,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:05,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:05,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:05,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:05,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:05,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:05,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:05,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:05,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:05,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:05,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:05,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:05,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:05:05,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:05,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:05,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:05,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:05,080 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:05,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:05,080 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:05,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:05,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:05,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:05,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:05,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:05,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:05,085 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:05,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:05,085 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:05,085 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:05,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:05,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:05,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:05,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:05,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:05,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:05,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:05,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:05,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:05,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:05,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:05,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:05,089 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:05:05,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:05,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:05,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:05,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:05,582 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:05,583 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-09-25 10:05:05,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/161d24605/a1590b63916d47f68b403c07dc4ed0cd/FLAG5a717df17 [2020-09-25 10:05:06,180 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:06,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-09-25 10:05:06,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/161d24605/a1590b63916d47f68b403c07dc4ed0cd/FLAG5a717df17 [2020-09-25 10:05:06,565 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/161d24605/a1590b63916d47f68b403c07dc4ed0cd [2020-09-25 10:05:06,579 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:06,585 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:06,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:06,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:06,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:06,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:06" (1/1) ... [2020-09-25 10:05:06,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@937f2cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:06, skipping insertion in model container [2020-09-25 10:05:06,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:06" (1/1) ... [2020-09-25 10:05:06,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:06,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:06,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:06,897 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:06,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:06,946 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:06,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:06 WrapperNode [2020-09-25 10:05:06,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:06,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:06,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:06,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:06,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:06" (1/1) ... [2020-09-25 10:05:06,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:06" (1/1) ... [2020-09-25 10:05:07,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:06" (1/1) ... [2020-09-25 10:05:07,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:06" (1/1) ... [2020-09-25 10:05:07,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:06" (1/1) ... [2020-09-25 10:05:07,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:06" (1/1) ... [2020-09-25 10:05:07,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:06" (1/1) ... [2020-09-25 10:05:07,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:07,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:07,119 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:07,119 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:07,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:06" (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 [2020-09-25 10:05:07,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:07,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:07,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 10:05:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 10:05:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:05:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:05:07,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:07,475 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:07,476 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 10:05:07,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:07 BoogieIcfgContainer [2020-09-25 10:05:07,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:07,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:07,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:07,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:07,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:06" (1/3) ... [2020-09-25 10:05:07,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a01e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:07, skipping insertion in model container [2020-09-25 10:05:07,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:06" (2/3) ... [2020-09-25 10:05:07,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a01e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:07, skipping insertion in model container [2020-09-25 10:05:07,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:07" (3/3) ... [2020-09-25 10:05:07,513 INFO L109 eAbstractionObserver]: Analyzing ICFG volatile_alias.i [2020-09-25 10:05:07,542 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:07,555 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:05:07,580 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:05:07,613 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:07,613 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:07,614 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:07,614 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:07,614 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:07,614 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:07,614 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:07,614 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:07,635 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 10:05:07,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 10:05:07,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:07,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:07,644 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:07,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:07,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1049886255, now seen corresponding path program 1 times [2020-09-25 10:05:07,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:07,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642320453] [2020-09-25 10:05:07,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:07,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:08,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:08,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 10:05:08,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:08,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-25 10:05:08,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:08,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:08,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:05:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 10:05:08,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:05:08,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:05:08,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:08,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:08,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:08,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:08,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:05:08,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:08,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:08,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:08,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:05:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:08,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642320453] [2020-09-25 10:05:08,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:08,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 10:05:08,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731247531] [2020-09-25 10:05:08,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:05:08,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:08,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:05:08,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:05:08,424 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 8 states. [2020-09-25 10:05:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:08,609 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2020-09-25 10:05:08,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 10:05:08,612 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-09-25 10:05:08,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:08,621 INFO L225 Difference]: With dead ends: 34 [2020-09-25 10:05:08,621 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:05:08,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:05:08,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:05:08,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:05:08,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:05:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:05:08,655 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-25 10:05:08,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:08,655 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:05:08,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:05:08,655 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:05:08,656 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:05:08,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:08,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:05:08,720 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 10:05:08,720 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 10:05:08,720 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:05:08,721 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|)) [2020-09-25 10:05:08,721 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:05:08,721 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:05:08,722 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:05:08,722 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:05:08,722 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:05:08,722 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-09-25 10:05:08,723 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 6 16) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 10:05:08,723 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 6 16) no Hoare annotation was computed. [2020-09-25 10:05:08,723 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 10:05:08,723 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 6 16) no Hoare annotation was computed. [2020-09-25 10:05:08,723 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 10:05:08,723 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 10:05:08,724 INFO L268 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-09-25 10:05:08,724 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 10:05:08,724 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-25 10:05:08,724 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 10:05:08,724 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-25 10:05:08,724 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 10:05:08,725 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-25 10:05:08,725 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-25 10:05:08,725 INFO L268 CegarLoopResult]: For program point L12-5(lines 12 14) no Hoare annotation was computed. [2020-09-25 10:05:08,725 INFO L268 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-09-25 10:05:08,725 INFO L268 CegarLoopResult]: For program point L8-3(line 8) no Hoare annotation was computed. [2020-09-25 10:05:08,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:05:08 BoogieIcfgContainer [2020-09-25 10:05:08,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:05:08,737 INFO L168 Benchmark]: Toolchain (without parser) took 2155.19 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 101.2 MB in the beginning and 112.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:08,738 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:05:08,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.28 ms. Allocated memory is still 146.3 MB. Free memory was 100.5 MB in the beginning and 91.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:08,740 INFO L168 Benchmark]: Boogie Preprocessor took 169.06 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 91.1 MB in the beginning and 182.5 MB in the end (delta: -91.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:08,741 INFO L168 Benchmark]: RCFGBuilder took 364.27 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 169.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:08,742 INFO L168 Benchmark]: TraceAbstraction took 1235.27 ms. Allocated memory is still 204.5 MB. Free memory was 169.1 MB in the beginning and 112.2 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2020-09-25 10:05:08,746 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 119.7 MB in the beginning and 119.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 362.28 ms. Allocated memory is still 146.3 MB. Free memory was 100.5 MB in the beginning and 91.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.06 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 91.1 MB in the beginning and 182.5 MB in the end (delta: -91.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 364.27 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 169.7 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1235.27 ms. Allocated memory is still 204.5 MB. Free memory was 169.1 MB in the beginning and 112.2 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 10 SDslu, 52 SDs, 0 SdLazy, 52 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 15 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1258 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...