/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/array-fpi/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:09,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:09,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:09,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:09,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:09,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:09,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:09,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:09,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:09,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:09,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:09,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:09,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:10,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:10,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:10,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:10,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:10,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:10,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:10,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:10,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:10,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:10,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:10,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:10,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:46:10,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:10,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:10,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:10,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:46:10,104 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:10,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:10,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:10,110 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:10,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:10,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:10,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:10,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:10,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:10,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:10,113 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:10,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:10,113 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:10,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:10,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:10,114 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:10,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:10,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:10,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:10,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:10,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:10,115 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:10,116 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:10,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:10,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:10,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:10,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:10,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:10,640 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:10,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2021-02-24 04:46:10,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb55de5bc/268a21c65e5f4af2ac83d8c068ce7bc9/FLAG81fe7a05e [2021-02-24 04:46:11,420 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:11,420 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs1f.c [2021-02-24 04:46:11,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb55de5bc/268a21c65e5f4af2ac83d8c068ce7bc9/FLAG81fe7a05e [2021-02-24 04:46:11,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb55de5bc/268a21c65e5f4af2ac83d8c068ce7bc9 [2021-02-24 04:46:11,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:11,800 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:11,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:11,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:11,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:11,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:11" (1/1) ... [2021-02-24 04:46:11,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272696ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:11, skipping insertion in model container [2021-02-24 04:46:11,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:11" (1/1) ... [2021-02-24 04:46:11,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:11,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:11,991 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs1f.c[588,601] [2021-02-24 04:46:12,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:12,024 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:12,039 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs1f.c[588,601] [2021-02-24 04:46:12,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:12,069 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:12,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:12 WrapperNode [2021-02-24 04:46:12,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:12,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:12,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:12,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:12,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:12" (1/1) ... [2021-02-24 04:46:12,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:12" (1/1) ... [2021-02-24 04:46:12,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:12" (1/1) ... [2021-02-24 04:46:12,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:12" (1/1) ... [2021-02-24 04:46:12,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:12" (1/1) ... [2021-02-24 04:46:12,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:12" (1/1) ... [2021-02-24 04:46:12,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:12" (1/1) ... [2021-02-24 04:46:12,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:12,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:12,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:12,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:12,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:12" (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 [2021-02-24 04:46:12,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:12,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:12,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:12,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:12,241 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:12,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:12,242 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:12,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:12,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:12,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:12,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:12,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:12,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:12,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:12,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:12,734 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-24 04:46:12,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:12 BoogieIcfgContainer [2021-02-24 04:46:12,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:12,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:12,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:12,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:12,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:11" (1/3) ... [2021-02-24 04:46:12,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa59168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:12, skipping insertion in model container [2021-02-24 04:46:12,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:12" (2/3) ... [2021-02-24 04:46:12,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa59168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:12, skipping insertion in model container [2021-02-24 04:46:12,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:12" (3/3) ... [2021-02-24 04:46:12,746 INFO L111 eAbstractionObserver]: Analyzing ICFG brs1f.c [2021-02-24 04:46:12,753 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:12,759 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:12,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:12,806 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:12,806 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:12,807 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:12,807 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:12,807 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:12,807 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:12,807 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:12,808 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:12,827 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2021-02-24 04:46:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 04:46:12,839 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:12,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:12,841 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:12,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:12,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1589495831, now seen corresponding path program 1 times [2021-02-24 04:46:12,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:12,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702518360] [2021-02-24 04:46:12,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:12,952 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:13,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:13,113 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,114 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:13,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:13,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:13,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:13,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:13,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702518360] [2021-02-24 04:46:13,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:13,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:13,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625394234] [2021-02-24 04:46:13,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:13,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:13,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:13,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:13,282 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2021-02-24 04:46:13,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:13,510 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2021-02-24 04:46:13,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:13,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-02-24 04:46:13,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:13,522 INFO L225 Difference]: With dead ends: 106 [2021-02-24 04:46:13,523 INFO L226 Difference]: Without dead ends: 51 [2021-02-24 04:46:13,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:13,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-24 04:46:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-02-24 04:46:13,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-24 04:46:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-02-24 04:46:13,587 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 35 [2021-02-24 04:46:13,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:13,588 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-02-24 04:46:13,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:13,588 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2021-02-24 04:46:13,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 04:46:13,590 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:13,590 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:13,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:13,591 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:13,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1961847080, now seen corresponding path program 1 times [2021-02-24 04:46:13,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:13,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2112814834] [2021-02-24 04:46:13,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:13,596 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:13,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:13,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:13,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:13,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:13,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:13,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:13,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:13,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:13,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2112814834] [2021-02-24 04:46:13,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:13,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:13,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932785615] [2021-02-24 04:46:13,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:13,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:13,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:13,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:13,868 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2021-02-24 04:46:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:14,165 INFO L93 Difference]: Finished difference Result 78 states and 84 transitions. [2021-02-24 04:46:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:14,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2021-02-24 04:46:14,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:14,168 INFO L225 Difference]: With dead ends: 78 [2021-02-24 04:46:14,169 INFO L226 Difference]: Without dead ends: 60 [2021-02-24 04:46:14,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 04:46:14,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-02-24 04:46:14,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-02-24 04:46:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-02-24 04:46:14,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-02-24 04:46:14,187 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 35 [2021-02-24 04:46:14,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:14,188 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-02-24 04:46:14,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-02-24 04:46:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-24 04:46:14,190 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:14,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:14,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:14,190 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:14,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:14,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2023038414, now seen corresponding path program 1 times [2021-02-24 04:46:14,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:14,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488439019] [2021-02-24 04:46:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:14,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:14,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:14,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:14,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-24 04:46:14,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:14,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:14,283 WARN L141 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size [2021-02-24 04:46:14,297 WARN L147 QuantifierPusher]: treesize reduction 9, result has 67.9 percent of original size 19 [2021-02-24 04:46:14,303 WARN L141 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size [2021-02-24 04:46:14,310 WARN L147 QuantifierPusher]: treesize reduction 2, result has 84.6 percent of original size 11 [2021-02-24 04:46:14,313 WARN L141 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size [2021-02-24 04:46:14,314 WARN L147 QuantifierPusher]: treesize reduction 25, result has 10.7 percent of original size 3 [2021-02-24 04:46:14,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:14,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:46:14,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:14,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-02-24 04:46:14,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:14,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:14,332 WARN L141 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size [2021-02-24 04:46:14,334 WARN L147 QuantifierPusher]: treesize reduction 8, result has 63.6 percent of original size 14 [2021-02-24 04:46:14,334 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-24 04:46:14,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:14,408 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:14,475 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:14,511 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:46:14,511 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:14,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:14,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:14 BoogieIcfgContainer [2021-02-24 04:46:14,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:14,534 INFO L168 Benchmark]: Toolchain (without parser) took 2744.80 ms. Allocated memory is still 155.2 MB. Free memory was 131.2 MB in the beginning and 95.1 MB in the end (delta: 36.1 MB). Peak memory consumption was 37.3 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:14,534 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:14,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.71 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 119.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:14,536 INFO L168 Benchmark]: Boogie Preprocessor took 48.85 ms. Allocated memory is still 155.2 MB. Free memory was 119.6 MB in the beginning and 118.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:14,537 INFO L168 Benchmark]: RCFGBuilder took 614.78 ms. Allocated memory is still 155.2 MB. Free memory was 118.1 MB in the beginning and 130.8 MB in the end (delta: -12.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:14,538 INFO L168 Benchmark]: TraceAbstraction took 1794.40 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 95.1 MB in the end (delta: 35.1 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:14,541 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 268.71 ms. Allocated memory is still 155.2 MB. Free memory was 130.1 MB in the beginning and 119.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.85 ms. Allocated memory is still 155.2 MB. Free memory was 119.6 MB in the beginning and 118.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 614.78 ms. Allocated memory is still 155.2 MB. Free memory was 118.1 MB in the beginning and 130.8 MB in the end (delta: -12.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1794.40 ms. Allocated memory is still 155.2 MB. Free memory was 130.3 MB in the beginning and 95.1 MB in the end (delta: 35.1 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i