/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/modnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:15:54,294 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:15:54,297 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:15:54,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:15:54,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:15:54,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:15:54,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:15:54,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:15:54,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:15:54,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:15:54,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:15:54,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:15:54,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:15:54,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:15:54,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:15:54,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:15:54,405 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:15:54,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:15:54,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:15:54,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:15:54,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:15:54,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:15:54,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:15:54,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:15:54,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:15:54,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:15:54,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:15:54,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:15:54,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:15:54,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:15:54,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:15:54,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:15:54,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:15:54,455 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:15:54,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:15:54,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:15:54,456 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:15:54,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:15:54,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:15:54,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:15:54,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:15:54,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:15:54,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:15:54,457 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:15:54,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:15:54,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:15:54,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:15:54,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:15:54,951 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:15:54,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modnf.c [2021-02-24 00:15:55,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d54bf9168/48ad8a8653bf4d96bc8deafb553ac400/FLAG92886b5da [2021-02-24 00:15:55,719 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:15:55,720 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/modnf.c [2021-02-24 00:15:55,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d54bf9168/48ad8a8653bf4d96bc8deafb553ac400/FLAG92886b5da [2021-02-24 00:15:55,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d54bf9168/48ad8a8653bf4d96bc8deafb553ac400 [2021-02-24 00:15:55,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:15:55,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:15:55,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:55,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:15:55,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:15:55,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:55" (1/1) ... [2021-02-24 00:15:55,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c3aaab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:55, skipping insertion in model container [2021-02-24 00:15:55,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:55" (1/1) ... [2021-02-24 00:15:55,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:15:55,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:15:55,962 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/modnf.c[588,601] [2021-02-24 00:15:55,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:55,996 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:15:56,010 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/modnf.c[588,601] [2021-02-24 00:15:56,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:56,038 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:15:56,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56 WrapperNode [2021-02-24 00:15:56,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:56,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:15:56,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:15:56,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:15:56,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (1/1) ... [2021-02-24 00:15:56,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:15:56,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:15:56,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:15:56,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:15:56,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (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 00:15:56,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:15:56,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:15:56,227 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:15:56,227 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:15:56,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:15:56,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:15:56,228 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:15:56,229 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:15:56,229 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:15:56,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:15:56,230 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:15:56,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:15:56,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:15:56,231 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:15:56,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:15:56,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:15:56,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:15:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:15:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:15:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:15:56,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:15:56,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:15:56,820 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:15:56,820 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 00:15:56,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:56 BoogieIcfgContainer [2021-02-24 00:15:56,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:15:56,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:15:56,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:15:56,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:15:56,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:15:55" (1/3) ... [2021-02-24 00:15:56,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314dd66c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:56, skipping insertion in model container [2021-02-24 00:15:56,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:56" (2/3) ... [2021-02-24 00:15:56,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314dd66c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:56, skipping insertion in model container [2021-02-24 00:15:56,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:56" (3/3) ... [2021-02-24 00:15:56,837 INFO L111 eAbstractionObserver]: Analyzing ICFG modnf.c [2021-02-24 00:15:56,849 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:15:56,854 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:15:56,878 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:15:56,915 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:15:56,915 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:15:56,915 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:15:56,915 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:15:56,915 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:15:56,916 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:15:56,916 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:15:56,916 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:15:56,940 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2021-02-24 00:15:56,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:15:56,956 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:56,957 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 00:15:56,958 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:56,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:56,968 INFO L82 PathProgramCache]: Analyzing trace with hash -774145788, now seen corresponding path program 1 times [2021-02-24 00:15:56,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:56,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615730904] [2021-02-24 00:15:56,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:57,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:57,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:57,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:57,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:57,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:57,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:57,439 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 00:15:57,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615730904] [2021-02-24 00:15:57,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:57,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:15:57,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022942239] [2021-02-24 00:15:57,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:15:57,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:57,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:15:57,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:15:57,467 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2021-02-24 00:15:57,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:57,689 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2021-02-24 00:15:57,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:15:57,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-24 00:15:57,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:57,700 INFO L225 Difference]: With dead ends: 111 [2021-02-24 00:15:57,701 INFO L226 Difference]: Without dead ends: 57 [2021-02-24 00:15:57,705 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 00:15:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-02-24 00:15:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-02-24 00:15:57,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-24 00:15:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2021-02-24 00:15:57,828 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 38 [2021-02-24 00:15:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:57,829 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2021-02-24 00:15:57,829 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:15:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2021-02-24 00:15:57,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:15:57,835 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:57,835 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 00:15:57,835 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:15:57,836 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:57,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:57,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1387502767, now seen corresponding path program 1 times [2021-02-24 00:15:57,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:57,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481910591] [2021-02-24 00:15:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:57,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:57,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:15:57,948 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,949 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:15:57,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:57,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:58,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:58,012 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:58,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:58,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:58,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:58,025 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 00:15:58,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481910591] [2021-02-24 00:15:58,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:58,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:15:58,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525358915] [2021-02-24 00:15:58,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:15:58,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:58,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:15:58,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:15:58,031 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2021-02-24 00:15:58,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:58,346 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2021-02-24 00:15:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:15:58,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-24 00:15:58,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:58,356 INFO L225 Difference]: With dead ends: 97 [2021-02-24 00:15:58,357 INFO L226 Difference]: Without dead ends: 75 [2021-02-24 00:15:58,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:15:58,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-02-24 00:15:58,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2021-02-24 00:15:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2021-02-24 00:15:58,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2021-02-24 00:15:58,412 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 38 [2021-02-24 00:15:58,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:58,413 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2021-02-24 00:15:58,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:15:58,413 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2021-02-24 00:15:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-24 00:15:58,415 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:58,415 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] [2021-02-24 00:15:58,416 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:15:58,416 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:58,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:58,417 INFO L82 PathProgramCache]: Analyzing trace with hash 388403656, now seen corresponding path program 1 times [2021-02-24 00:15:58,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:58,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002726002] [2021-02-24 00:15:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:58,442 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-24 00:15:58,442 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 00:15:58,442 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:15:58,447 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:15:58,464 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 00:15:58,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:15:58 BoogieIcfgContainer [2021-02-24 00:15:58,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:15:58,467 INFO L168 Benchmark]: Toolchain (without parser) took 2703.29 ms. Allocated memory is still 168.8 MB. Free memory was 145.6 MB in the beginning and 59.1 MB in the end (delta: 86.5 MB). Peak memory consumption was 87.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:58,468 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 168.8 MB. Free memory is still 141.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:15:58,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.58 ms. Allocated memory is still 168.8 MB. Free memory was 144.5 MB in the beginning and 134.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:58,470 INFO L168 Benchmark]: Boogie Preprocessor took 57.07 ms. Allocated memory is still 168.8 MB. Free memory was 134.0 MB in the beginning and 132.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:58,471 INFO L168 Benchmark]: RCFGBuilder took 724.37 ms. Allocated memory is still 168.8 MB. Free memory was 132.4 MB in the beginning and 148.8 MB in the end (delta: -16.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:58,472 INFO L168 Benchmark]: TraceAbstraction took 1637.04 ms. Allocated memory is still 168.8 MB. Free memory was 148.8 MB in the beginning and 59.1 MB in the end (delta: 89.7 MB). Peak memory consumption was 89.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:58,477 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 168.8 MB. Free memory is still 141.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.58 ms. Allocated memory is still 168.8 MB. Free memory was 144.5 MB in the beginning and 134.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.07 ms. Allocated memory is still 168.8 MB. Free memory was 134.0 MB in the beginning and 132.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 724.37 ms. Allocated memory is still 168.8 MB. Free memory was 132.4 MB in the beginning and 148.8 MB in the end (delta: -16.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1637.04 ms. Allocated memory is still 168.8 MB. Free memory was 148.8 MB in the beginning and 59.1 MB in the end (delta: 89.7 MB). Peak memory consumption was 89.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible 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] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i