/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/eqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:46:50,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:46:50,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:46:50,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:46:50,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:46:50,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:46:50,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:46:50,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:46:50,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:46:50,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:46:50,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:46:50,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:46:50,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:46:50,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:46:50,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:46:50,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:46:50,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:46:50,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:46:50,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:46:50,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:46:50,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:46:50,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:46:50,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:46:50,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:46:50,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:46:50,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:46:50,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:46:50,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:46:50,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:46:50,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:46:50,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:46:50,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:46:50,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:46:50,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:46:50,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:46:50,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:46:50,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:46:50,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:46:50,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:46:50,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:46:50,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:46:50,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:46:50,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:46:50,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:46:50,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:46:50,274 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:46:50,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:46:50,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:46:50,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:46:50,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:46:50,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:46:50,277 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:46:50,278 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:46:50,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:46:50,278 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:46:50,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:46:50,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:46:50,279 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:46:50,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:46:50,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:46:50,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:46:50,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:46:50,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:46:50,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:46:50,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:46:50,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:46:50,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:46:50,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:46:50,700 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:46:50,701 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:46:50,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn4f.c [2021-02-23 18:46:50,772 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65d79fec/26090b88e26c4cb182a4e2e2afb555e2/FLAGeaf39e120 [2021-02-23 18:46:51,399 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:46:51,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn4f.c [2021-02-23 18:46:51,409 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65d79fec/26090b88e26c4cb182a4e2e2afb555e2/FLAGeaf39e120 [2021-02-23 18:46:51,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a65d79fec/26090b88e26c4cb182a4e2e2afb555e2 [2021-02-23 18:46:51,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:46:51,746 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:46:51,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:51,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:46:51,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:46:51,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:51" (1/1) ... [2021-02-23 18:46:51,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2945c2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:51, skipping insertion in model container [2021-02-23 18:46:51,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:51" (1/1) ... [2021-02-23 18:46:51,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:46:51,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:46:51,925 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/eqn4f.c[588,601] [2021-02-23 18:46:51,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:51,955 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:46:51,968 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/eqn4f.c[588,601] [2021-02-23 18:46:51,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:51,996 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:46:51,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:51 WrapperNode [2021-02-23 18:46:51,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:51,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:46:51,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:46:51,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:46:52,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:51" (1/1) ... [2021-02-23 18:46:52,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:51" (1/1) ... [2021-02-23 18:46:52,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:51" (1/1) ... [2021-02-23 18:46:52,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:51" (1/1) ... [2021-02-23 18:46:52,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:51" (1/1) ... [2021-02-23 18:46:52,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:51" (1/1) ... [2021-02-23 18:46:52,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:51" (1/1) ... [2021-02-23 18:46:52,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:46:52,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:46:52,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:46:52,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:46:52,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:51" (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 [2021-02-23 18:46:52,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:46:52,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:46:52,149 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:46:52,149 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:46:52,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:46:52,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:46:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:46:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:46:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:46:52,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:46:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:46:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:46:52,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:46:52,152 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:46:52,153 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:46:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:46:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:46:52,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:46:52,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:46:52,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:46:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:46:52,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:46:52,522 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:46:52,522 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:46:52,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:52 BoogieIcfgContainer [2021-02-23 18:46:52,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:46:52,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:46:52,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:46:52,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:46:52,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:46:51" (1/3) ... [2021-02-23 18:46:52,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e25acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:52, skipping insertion in model container [2021-02-23 18:46:52,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:51" (2/3) ... [2021-02-23 18:46:52,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e25acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:52, skipping insertion in model container [2021-02-23 18:46:52,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:52" (3/3) ... [2021-02-23 18:46:52,539 INFO L111 eAbstractionObserver]: Analyzing ICFG eqn4f.c [2021-02-23 18:46:52,547 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:46:52,552 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:46:52,586 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:46:52,612 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:46:52,612 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:46:52,612 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:46:52,612 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:46:52,612 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:46:52,613 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:46:52,613 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:46:52,613 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:46:52,631 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2021-02-23 18:46:52,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 18:46:52,642 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:52,643 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] [2021-02-23 18:46:52,643 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:52,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:52,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1792706489, now seen corresponding path program 1 times [2021-02-23 18:46:52,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:52,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029037783] [2021-02-23 18:46:52,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:52,742 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:52,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:52,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:52,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:52,980 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:53,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:53,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:53,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:53,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:53,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:53,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:53,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029037783] [2021-02-23 18:46:53,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:53,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:46:53,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196477782] [2021-02-23 18:46:53,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:46:53,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:53,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:46:53,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:46:53,156 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 3 states. [2021-02-23 18:46:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:53,318 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2021-02-23 18:46:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:46:53,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2021-02-23 18:46:53,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:53,330 INFO L225 Difference]: With dead ends: 115 [2021-02-23 18:46:53,330 INFO L226 Difference]: Without dead ends: 61 [2021-02-23 18:46:53,334 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 [2021-02-23 18:46:53,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-23 18:46:53,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-23 18:46:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-23 18:46:53,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-02-23 18:46:53,390 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 40 [2021-02-23 18:46:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:53,391 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-02-23 18:46:53,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:46:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-02-23 18:46:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-23 18:46:53,393 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:53,394 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] [2021-02-23 18:46:53,394 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:46:53,394 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:53,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1320562932, now seen corresponding path program 1 times [2021-02-23 18:46:53,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:53,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796972219] [2021-02-23 18:46:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:53,400 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:53,428 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-23 18:46:53,428 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:46:53,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:46:53,450 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-23 18:46:53,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:46:53 BoogieIcfgContainer [2021-02-23 18:46:53,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:46:53,452 INFO L168 Benchmark]: Toolchain (without parser) took 1717.42 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 81.9 MB in the end (delta: 44.9 MB). Peak memory consumption was 45.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:53,453 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:46:53,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.19 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:53,455 INFO L168 Benchmark]: Boogie Preprocessor took 39.53 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:53,456 INFO L168 Benchmark]: RCFGBuilder took 486.49 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 129.6 MB in the end (delta: -15.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:53,457 INFO L168 Benchmark]: TraceAbstraction took 924.68 ms. Allocated memory is still 151.0 MB. Free memory was 129.6 MB in the beginning and 81.9 MB in the end (delta: 47.7 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:53,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 249.19 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 115.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.53 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 486.49 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 129.6 MB in the end (delta: -15.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 924.68 ms. Allocated memory is still 151.0 MB. Free memory was 129.6 MB in the beginning and 81.9 MB in the end (delta: 47.7 MB). Peak memory consumption was 48.2 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] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] a[0] = 8 [L32] b[0] = 0 [L33] i=1 [L33] COND FALSE !(i