/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 07:57:35,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 07:57:35,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 07:57:35,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 07:57:35,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 07:57:35,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 07:57:35,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 07:57:35,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 07:57:35,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 07:57:35,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 07:57:35,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 07:57:35,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 07:57:35,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 07:57:35,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 07:57:35,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 07:57:35,068 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 07:57:35,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 07:57:35,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 07:57:35,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 07:57:35,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 07:57:35,080 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 07:57:35,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 07:57:35,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 07:57:35,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 07:57:35,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-16 07:57:35,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-16 07:57:35,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-16 07:57:35,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-16 07:57:35,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-16 07:57:35,089 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-16 07:57:35,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 07:57:35,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 07:57:35,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 07:57:35,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 07:57:35,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 07:57:35,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 07:57:35,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 07:57:35,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 07:57:35,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 07:57:35,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 07:57:35,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 07:57:35,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 07:57:35,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 07:57:35,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 07:57:35,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 07:57:35,119 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 07:57:35,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 07:57:35,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 07:57:35,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 07:57:35,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 07:57:35,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 07:57:35,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 07:57:35,121 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 07:57:35,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 07:57:35,121 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 07:57:35,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 07:57:35,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 07:57:35,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 07:57:35,122 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 07:57:35,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 07:57:35,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 07:57:35,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 07:57:35,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 07:57:35,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 07:57:35,122 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 07:57:35,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 07:57:35,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 07:57:35,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 07:57:35,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 07:57:35,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 07:57:35,408 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 07:57:35,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i [2021-04-16 07:57:35,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6742f3e4c/32a0b55972f8495e8f4463d95683e1ec/FLAG641e5ee7e [2021-04-16 07:57:35,926 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 07:57:35,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i [2021-04-16 07:57:35,932 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6742f3e4c/32a0b55972f8495e8f4463d95683e1ec/FLAG641e5ee7e [2021-04-16 07:57:36,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6742f3e4c/32a0b55972f8495e8f4463d95683e1ec [2021-04-16 07:57:36,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 07:57:36,342 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 07:57:36,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 07:57:36,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 07:57:36,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 07:57:36,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:57:36" (1/1) ... [2021-04-16 07:57:36,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3981e6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:36, skipping insertion in model container [2021-04-16 07:57:36,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:57:36" (1/1) ... [2021-04-16 07:57:36,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 07:57:36,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 07:57:36,476 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-04-16 07:57:36,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:57:36,490 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 07:57:36,500 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-04-16 07:57:36,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:57:36,513 INFO L208 MainTranslator]: Completed translation [2021-04-16 07:57:36,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:36 WrapperNode [2021-04-16 07:57:36,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 07:57:36,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 07:57:36,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 07:57:36,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 07:57:36,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:36" (1/1) ... [2021-04-16 07:57:36,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:36" (1/1) ... [2021-04-16 07:57:36,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:36" (1/1) ... [2021-04-16 07:57:36,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:36" (1/1) ... [2021-04-16 07:57:36,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:36" (1/1) ... [2021-04-16 07:57:36,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:36" (1/1) ... [2021-04-16 07:57:36,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:36" (1/1) ... [2021-04-16 07:57:36,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 07:57:36,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 07:57:36,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 07:57:36,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 07:57:36,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:36" (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 [2021-04-16 07:57:36,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 07:57:36,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 07:57:36,655 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 07:57:36,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 07:57:36,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 07:57:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 07:57:36,655 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-04-16 07:57:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-04-16 07:57:36,656 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 07:57:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 07:57:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 07:57:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-04-16 07:57:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 07:57:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 07:57:36,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 07:57:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 07:57:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 07:57:36,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 07:57:36,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 07:57:36,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 07:57:36,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 07:57:36,954 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 07:57:36,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:57:36 BoogieIcfgContainer [2021-04-16 07:57:36,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 07:57:36,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 07:57:36,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 07:57:36,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 07:57:36,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 07:57:36" (1/3) ... [2021-04-16 07:57:36,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5739cde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:57:36, skipping insertion in model container [2021-04-16 07:57:36,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:57:36" (2/3) ... [2021-04-16 07:57:36,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5739cde0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:57:36, skipping insertion in model container [2021-04-16 07:57:36,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:57:36" (3/3) ... [2021-04-16 07:57:36,962 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.i [2021-04-16 07:57:36,979 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 07:57:36,983 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 07:57:37,012 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 07:57:37,029 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 07:57:37,029 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 07:57:37,029 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 07:57:37,029 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 07:57:37,029 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 07:57:37,029 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 07:57:37,030 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 07:57:37,030 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 07:57:37,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 07:57:37,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 07:57:37,047 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:57:37,048 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:57:37,048 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:57:37,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:57:37,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1005951186, now seen corresponding path program 1 times [2021-04-16 07:57:37,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:57:37,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459239519] [2021-04-16 07:57:37,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:57:37,115 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:57:37,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:37,205 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,206 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:37,208 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,208 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-04-16 07:57:37,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:37,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:57:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:57:37,251 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:57:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:57:37,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459239519] [2021-04-16 07:57:37,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:57:37,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 07:57:37,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431424535] [2021-04-16 07:57:37,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 07:57:37,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:57:37,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 07:57:37,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 07:57:37,275 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:57:37,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:57:37,387 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-04-16 07:57:37,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 07:57:37,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-04-16 07:57:37,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:57:37,393 INFO L225 Difference]: With dead ends: 34 [2021-04-16 07:57:37,393 INFO L226 Difference]: Without dead ends: 15 [2021-04-16 07:57:37,396 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-04-16 07:57:37,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-04-16 07:57:37,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-04-16 07:57:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:57:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-04-16 07:57:37,435 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-04-16 07:57:37,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:57:37,436 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-04-16 07:57:37,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:57:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-04-16 07:57:37,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 07:57:37,437 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:57:37,437 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:57:37,437 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 07:57:37,437 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:57:37,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:57:37,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1392462319, now seen corresponding path program 1 times [2021-04-16 07:57:37,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:57:37,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043686659] [2021-04-16 07:57:37,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:57:37,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,487 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 07:57:37,488 INFO L175 rdanLoopAcceleration]: Guard: Formula: (and (< v_main_~y~0_10 (+ v_main_~x~0_10 1)) (< v_main_~x~0_10 v_main_~n~0_8)) InVars {main_~y~0=v_main_~y~0_10, main_~n~0=v_main_~n~0_8, main_~x~0=v_main_~x~0_10} OutVars{main_~y~0=v_main_~y~0_10, main_~n~0=v_main_~n~0_8, main_~x~0=v_main_~x~0_10} AuxVars[] AssignedVars[] [2021-04-16 07:57:37,501 WARN L240 tifierPushTermWalker]: treesize reduction 32, result has 68.3 percent of original size [2021-04-16 07:57:37,510 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,514 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,517 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,522 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,526 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,530 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,533 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,536 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,547 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:37,550 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,551 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 07:57:37,554 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,557 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:57:37,561 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,564 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,566 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,569 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,571 WARN L245 tifierPushTermWalker]: treesize reduction 32, result has 68.3 percent of original size 61 [2021-04-16 07:57:37,609 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:57:37,611 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-04-16 07:57:37,612 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:57:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-16 07:57:37,644 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-16 07:57:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-16 07:57:37,677 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-16 07:57:37,710 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-04-16 07:57:37,710 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-04-16 07:57:37,711 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 07:57:37,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 07:57:37 BoogieIcfgContainer [2021-04-16 07:57:37,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 07:57:37,721 INFO L168 Benchmark]: Toolchain (without parser) took 1379.03 ms. Allocated memory is still 181.4 MB. Free memory was 146.9 MB in the beginning and 95.5 MB in the end (delta: 51.3 MB). Peak memory consumption was 50.7 MB. Max. memory is 8.0 GB. [2021-04-16 07:57:37,721 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 181.4 MB. Free memory is still 163.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 07:57:37,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.32 ms. Allocated memory is still 181.4 MB. Free memory was 146.7 MB in the beginning and 137.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 07:57:37,722 INFO L168 Benchmark]: Boogie Preprocessor took 22.89 ms. Allocated memory is still 181.4 MB. Free memory was 137.3 MB in the beginning and 135.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-16 07:57:37,723 INFO L168 Benchmark]: RCFGBuilder took 417.42 ms. Allocated memory is still 181.4 MB. Free memory was 135.8 MB in the beginning and 152.2 MB in the end (delta: -16.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. [2021-04-16 07:57:37,723 INFO L168 Benchmark]: TraceAbstraction took 762.83 ms. Allocated memory is still 181.4 MB. Free memory was 151.6 MB in the beginning and 95.5 MB in the end (delta: 56.1 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. [2021-04-16 07:57:37,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 181.4 MB. Free memory is still 163.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 157.32 ms. Allocated memory is still 181.4 MB. Free memory was 146.7 MB in the beginning and 137.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.89 ms. Allocated memory is still 181.4 MB. Free memory was 137.3 MB in the beginning and 135.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 417.42 ms. Allocated memory is still 181.4 MB. Free memory was 135.8 MB in the beginning and 152.2 MB in the end (delta: -16.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 762.83 ms. Allocated memory is still 181.4 MB. Free memory was 151.6 MB in the beginning and 95.5 MB in the end (delta: 56.1 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] int n = __VERIFIER_nondet_int(); [L23] COND FALSE !(!(x>=0 && x<=y && yy [L26] y++ [L24] COND FALSE !(x