/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/s4liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:50,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:50,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:50,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:46:50,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:46:50,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:46:50,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:46:50,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:46:50,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:46:50,901 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:46:50,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:46:50,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:46:50,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:50,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:50,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:50,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:50,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:50,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:50,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:50,928 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:50,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:50,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:50,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:50,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:50,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:46:50,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:50,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:50,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:50,969 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 04:46:50,996 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:50,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:51,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:51,002 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:51,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:51,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:51,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:51,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:51,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:51,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:51,004 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:51,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:51,005 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:51,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:51,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:51,006 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:51,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:51,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:51,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:51,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:51,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:51,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:51,007 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:51,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:51,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:51,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:51,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:51,434 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:51,435 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:51,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4liff.c [2021-02-24 04:46:51,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/734c538a1/e94d8f39cdaf4d69bd0b08e287f2dcce/FLAGd45a6f80d [2021-02-24 04:46:52,270 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:52,272 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s4liff.c [2021-02-24 04:46:52,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/734c538a1/e94d8f39cdaf4d69bd0b08e287f2dcce/FLAGd45a6f80d [2021-02-24 04:46:52,606 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/734c538a1/e94d8f39cdaf4d69bd0b08e287f2dcce [2021-02-24 04:46:52,613 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:52,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:52,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:52,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:52,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:52,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:52" (1/1) ... [2021-02-24 04:46:52,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a40dec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:52, skipping insertion in model container [2021-02-24 04:46:52,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:52" (1/1) ... [2021-02-24 04:46:52,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:52,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:52,840 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/s4liff.c[589,602] [2021-02-24 04:46:52,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:52,878 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:52,892 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/s4liff.c[589,602] [2021-02-24 04:46:52,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:52,920 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:52,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:52 WrapperNode [2021-02-24 04:46:52,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:52,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:52,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:52,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:52,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:52" (1/1) ... [2021-02-24 04:46:52,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:52" (1/1) ... [2021-02-24 04:46:52,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:52" (1/1) ... [2021-02-24 04:46:52,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:52" (1/1) ... [2021-02-24 04:46:52,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:52" (1/1) ... [2021-02-24 04:46:52,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:52" (1/1) ... [2021-02-24 04:46:52,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:52" (1/1) ... [2021-02-24 04:46:52,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:52,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:52,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:52,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:52,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:52" (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 04:46:53,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:53,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:53,097 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:53,097 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:53,098 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:53,098 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:53,098 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:53,099 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:53,099 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:53,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:53,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:53,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:53,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:53,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:53,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:53,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:53,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:53,819 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 04:46:53,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:53 BoogieIcfgContainer [2021-02-24 04:46:53,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:53,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:53,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:53,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:53,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:52" (1/3) ... [2021-02-24 04:46:53,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e529880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:53, skipping insertion in model container [2021-02-24 04:46:53,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:52" (2/3) ... [2021-02-24 04:46:53,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e529880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:53, skipping insertion in model container [2021-02-24 04:46:53,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:53" (3/3) ... [2021-02-24 04:46:53,831 INFO L111 eAbstractionObserver]: Analyzing ICFG s4liff.c [2021-02-24 04:46:53,839 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:53,845 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:53,867 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:53,895 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:53,895 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:53,896 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:53,896 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:53,896 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:53,896 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:53,896 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:53,897 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-24 04:46:53,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 04:46:53,927 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:53,928 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] [2021-02-24 04:46:53,928 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:53,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:53,935 INFO L82 PathProgramCache]: Analyzing trace with hash -276473570, now seen corresponding path program 1 times [2021-02-24 04:46:53,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:53,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480223683] [2021-02-24 04:46:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:54,045 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:54,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:54,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:54,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:54,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:54,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:54,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:54,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:54,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:54,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:54,392 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 04:46:54,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480223683] [2021-02-24 04:46:54,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:54,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:54,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525755034] [2021-02-24 04:46:54,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:54,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:54,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:54,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:54,426 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2021-02-24 04:46:54,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:54,757 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2021-02-24 04:46:54,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:54,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-24 04:46:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:54,773 INFO L225 Difference]: With dead ends: 131 [2021-02-24 04:46:54,774 INFO L226 Difference]: Without dead ends: 64 [2021-02-24 04:46:54,783 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 04:46:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-24 04:46:54,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-24 04:46:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-24 04:46:54,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-02-24 04:46:54,866 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 38 [2021-02-24 04:46:54,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:54,867 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-02-24 04:46:54,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:54,868 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-02-24 04:46:54,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 04:46:54,872 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:54,872 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] [2021-02-24 04:46:54,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:54,874 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:54,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1119969012, now seen corresponding path program 1 times [2021-02-24 04:46:54,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:54,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011453066] [2021-02-24 04:46:54,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:54,892 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:55,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:55,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:55,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:55,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:55,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:55,055 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:55,072 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:55,073 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:55,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:55,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:55,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:55,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 04:46:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:55,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:55,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:55,172 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 04:46:55,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011453066] [2021-02-24 04:46:55,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:55,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:55,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430231918] [2021-02-24 04:46:55,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:55,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:55,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:55,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:55,177 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 5 states. [2021-02-24 04:46:55,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:55,549 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2021-02-24 04:46:55,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:55,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-24 04:46:55,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:55,552 INFO L225 Difference]: With dead ends: 120 [2021-02-24 04:46:55,553 INFO L226 Difference]: Without dead ends: 89 [2021-02-24 04:46:55,554 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 04:46:55,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-24 04:46:55,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2021-02-24 04:46:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-24 04:46:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-02-24 04:46:55,577 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 38 [2021-02-24 04:46:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:55,577 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-02-24 04:46:55,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:55,578 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-02-24 04:46:55,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-24 04:46:55,584 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:55,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:55,585 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:55,585 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:55,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1778519661, now seen corresponding path program 1 times [2021-02-24 04:46:55,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:55,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [204225246] [2021-02-24 04:46:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:55,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:55,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:55,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:55,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:55,651 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-24 04:46:55,667 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-24 04:46:55,674 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-24 04:46:55,677 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-24 04:46:55,678 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:55,742 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:55,823 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:55,892 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:46:55,892 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:55,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:46:55,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:55 BoogieIcfgContainer [2021-02-24 04:46:55,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:55,920 INFO L168 Benchmark]: Toolchain (without parser) took 3304.38 ms. Allocated memory was 173.0 MB in the beginning and 220.2 MB in the end (delta: 47.2 MB). Free memory was 148.9 MB in the beginning and 162.2 MB in the end (delta: -13.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,921 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 173.0 MB. Free memory was 146.0 MB in the beginning and 145.9 MB in the end (delta: 100.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:55,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.83 ms. Allocated memory is still 173.0 MB. Free memory was 148.0 MB in the beginning and 137.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,923 INFO L168 Benchmark]: Boogie Preprocessor took 51.93 ms. Allocated memory is still 173.0 MB. Free memory was 137.7 MB in the beginning and 136.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,930 INFO L168 Benchmark]: RCFGBuilder took 845.81 ms. Allocated memory is still 173.0 MB. Free memory was 136.0 MB in the beginning and 150.8 MB in the end (delta: -14.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,931 INFO L168 Benchmark]: TraceAbstraction took 2095.18 ms. Allocated memory was 173.0 MB in the beginning and 220.2 MB in the end (delta: 47.2 MB). Free memory was 150.2 MB in the beginning and 162.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 35.8 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:55,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 173.0 MB. Free memory was 146.0 MB in the beginning and 145.9 MB in the end (delta: 100.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 290.83 ms. Allocated memory is still 173.0 MB. Free memory was 148.0 MB in the beginning and 137.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.93 ms. Allocated memory is still 173.0 MB. Free memory was 137.7 MB in the beginning and 136.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 845.81 ms. Allocated memory is still 173.0 MB. Free memory was 136.0 MB in the beginning and 150.8 MB in the end (delta: -14.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2095.18 ms. Allocated memory was 173.0 MB in the beginning and 220.2 MB in the end (delta: 47.2 MB). Free memory was 150.2 MB in the beginning and 162.2 MB in the end (delta: -11.9 MB). Peak memory consumption was 35.8 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] sum[0] = N [L32] i=0 [L32] COND TRUE i