/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/trex03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 00:22:09,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 00:22:09,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 00:22:09,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-22 00:22:09,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-22 00:22:09,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-22 00:22:09,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-22 00:22:09,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-22 00:22:09,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-22 00:22:09,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-22 00:22:09,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-22 00:22:09,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-22 00:22:09,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 00:22:09,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 00:22:09,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 00:22:09,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 00:22:09,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 00:22:09,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 00:22:09,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 00:22:09,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 00:22:09,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 00:22:09,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 00:22:09,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 00:22:10,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 00:22:10,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-22 00:22:10,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-22 00:22:10,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-22 00:22:10,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-22 00:22:10,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-22 00:22:10,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-22 00:22:10,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-22 00:22:10,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-22 00:22:10,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-22 00:22:10,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-22 00:22:10,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-22 00:22:10,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-22 00:22:10,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-22 00:22:10,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-22 00:22:10,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 00:22:10,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 00:22:10,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 00:22:10,042 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-22 00:22:10,064 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 00:22:10,065 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 00:22:10,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 00:22:10,069 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 00:22:10,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 00:22:10,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 00:22:10,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 00:22:10,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 00:22:10,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 00:22:10,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 00:22:10,072 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 00:22:10,073 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 00:22:10,073 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 00:22:10,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 00:22:10,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 00:22:10,074 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 00:22:10,074 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 00:22:10,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 00:22:10,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 00:22:10,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 00:22:10,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 00:22:10,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 00:22:10,076 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-22 00:22:10,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 00:22:10,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 00:22:10,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 00:22:10,513 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 00:22:10,514 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 00:22:10,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-1.c [2021-02-22 00:22:10,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfcc187b6/ca8568b48ec3412a97d931416f1e1c91/FLAGcb83655f4 [2021-02-22 00:22:11,278 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 00:22:11,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c [2021-02-22 00:22:11,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfcc187b6/ca8568b48ec3412a97d931416f1e1c91/FLAGcb83655f4 [2021-02-22 00:22:11,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfcc187b6/ca8568b48ec3412a97d931416f1e1c91 [2021-02-22 00:22:11,684 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 00:22:11,695 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 00:22:11,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 00:22:11,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 00:22:11,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 00:22:11,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:22:11" (1/1) ... [2021-02-22 00:22:11,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40688e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:11, skipping insertion in model container [2021-02-22 00:22:11,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 12:22:11" (1/1) ... [2021-02-22 00:22:11,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 00:22:11,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 00:22:11,885 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c[320,333] [2021-02-22 00:22:11,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:22:11,914 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 00:22:11,930 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c[320,333] [2021-02-22 00:22:11,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 00:22:11,956 INFO L208 MainTranslator]: Completed translation [2021-02-22 00:22:11,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:11 WrapperNode [2021-02-22 00:22:11,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 00:22:11,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 00:22:11,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 00:22:11,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 00:22:11,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:11" (1/1) ... [2021-02-22 00:22:11,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:11" (1/1) ... [2021-02-22 00:22:11,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:11" (1/1) ... [2021-02-22 00:22:11,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:11" (1/1) ... [2021-02-22 00:22:11,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:11" (1/1) ... [2021-02-22 00:22:11,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:11" (1/1) ... [2021-02-22 00:22:11,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:11" (1/1) ... [2021-02-22 00:22:12,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 00:22:12,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 00:22:12,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 00:22:12,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 00:22:12,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-22 00:22:12,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 00:22:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 00:22:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 00:22:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 00:22:12,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 00:22:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 00:22:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 00:22:12,129 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 00:22:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 00:22:12,130 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 00:22:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-22 00:22:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-22 00:22:12,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 00:22:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 00:22:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 00:22:12,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 00:22:12,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 00:22:12,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 00:22:12,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 00:22:12,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 00:22:12,703 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-22 00:22:12,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:22:12 BoogieIcfgContainer [2021-02-22 00:22:12,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 00:22:12,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 00:22:12,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 00:22:12,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 00:22:12,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 12:22:11" (1/3) ... [2021-02-22 00:22:12,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bcd4f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:22:12, skipping insertion in model container [2021-02-22 00:22:12,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 12:22:11" (2/3) ... [2021-02-22 00:22:12,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bcd4f28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 12:22:12, skipping insertion in model container [2021-02-22 00:22:12,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 12:22:12" (3/3) ... [2021-02-22 00:22:12,715 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2021-02-22 00:22:12,723 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 00:22:12,728 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 00:22:12,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 00:22:12,776 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 00:22:12,777 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 00:22:12,777 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-22 00:22:12,777 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 00:22:12,777 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 00:22:12,777 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 00:22:12,777 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 00:22:12,778 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 00:22:12,795 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2021-02-22 00:22:12,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-22 00:22:12,806 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 00:22:12,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 00:22:12,807 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 00:22:12,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 00:22:12,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1945788113, now seen corresponding path program 1 times [2021-02-22 00:22:12,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 00:22:12,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397241488] [2021-02-22 00:22:12,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 00:22:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 00:22:12,957 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 00:22:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 00:22:12,997 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 00:22:13,053 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 00:22:13,054 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 00:22:13,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 00:22:13,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 12:22:13 BoogieIcfgContainer [2021-02-22 00:22:13,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 00:22:13,096 INFO L168 Benchmark]: Toolchain (without parser) took 1408.76 ms. Allocated memory is still 151.0 MB. Free memory was 127.5 MB in the beginning and 113.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2021-02-22 00:22:13,097 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 00:22:13,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.24 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 00:22:13,100 INFO L168 Benchmark]: Boogie Preprocessor took 42.74 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 00:22:13,101 INFO L168 Benchmark]: RCFGBuilder took 703.67 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 131.5 MB in the end (delta: -16.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2021-02-22 00:22:13,103 INFO L168 Benchmark]: TraceAbstraction took 386.19 ms. Allocated memory is still 151.0 MB. Free memory was 131.1 MB in the beginning and 113.8 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-22 00:22:13,108 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 126.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.24 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.74 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 703.67 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 131.5 MB in the end (delta: -16.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 386.19 ms. Allocated memory is still 151.0 MB. Free memory was 131.1 MB in the beginning and 113.8 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=1, x1=1] [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=0, x1=1, x2=0] [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); VAL [__VERIFIER_nondet_uint()=1, x1=1, x2=0, x3=1] [L18] unsigned int d1=1, d2=1, d3=1; VAL [d1=1, d2=1, d3=1, x1=1, x2=0, x3=1] [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); VAL [__VERIFIER_nondet_bool()=20, c1=20, d1=1, d2=1, d3=1, x1=1, x2=0, x3=1] [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); VAL [__VERIFIER_nondet_bool()=21, c1=20, c2=21, d1=1, d2=1, d3=1, x1=1, x2=0, x3=1] [L21] COND FALSE !(x1>0 && x2>0 && x3>0) VAL [c1=20, c2=21, d1=1, d2=1, d3=1, x1=1, x2=0, x3=1] [L30] CALL __VERIFIER_assert(x1==0 && x2==0 && x3==0) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 incorrect! Received shutdown request...