/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/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:16:30,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:16:30,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:16:30,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:16:30,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:16:30,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:16:30,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:16:30,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:16:30,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:16:30,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:16:30,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:16:30,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:16:30,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:16:30,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:16:30,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:16:30,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:16:30,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:16:30,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:16:30,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:16:30,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:16:30,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:16:30,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:16:30,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:16:30,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:16:30,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:16:30,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:16:30,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:16:30,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:16:30,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:16:30,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:16:30,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:16:30,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:16:30,532 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:16:30,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:16:30,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:16:30,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:16:30,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:16:30,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:16:30,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:16:30,534 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:16:30,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:16:30,535 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:16:30,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:16:30,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:16:30,535 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:16:30,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:16:30,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:16:30,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:30,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:16:30,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:16:30,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:16:30,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:16:30,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:16:30,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:16:30,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:16:30,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:16:30,965 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:16:30,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp2f.c [2021-02-21 21:16:31,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98ec47232/ffa7dbf30e7b4e44b72fa6427b7fbba3/FLAGd2dac8631 [2021-02-21 21:16:31,654 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:16:31,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp2f.c [2021-02-21 21:16:31,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98ec47232/ffa7dbf30e7b4e44b72fa6427b7fbba3/FLAGd2dac8631 [2021-02-21 21:16:32,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98ec47232/ffa7dbf30e7b4e44b72fa6427b7fbba3 [2021-02-21 21:16:32,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:16:32,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:16:32,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:32,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:16:32,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:16:32,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:32" (1/1) ... [2021-02-21 21:16:32,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1448bddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:32, skipping insertion in model container [2021-02-21 21:16:32,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:32" (1/1) ... [2021-02-21 21:16:32,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:16:32,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:16:32,225 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/indp2f.c[589,602] [2021-02-21 21:16:32,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:32,254 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:16:32,269 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/indp2f.c[589,602] [2021-02-21 21:16:32,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:32,294 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:16:32,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:32 WrapperNode [2021-02-21 21:16:32,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:32,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:16:32,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:16:32,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:16:32,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:32" (1/1) ... [2021-02-21 21:16:32,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:32" (1/1) ... [2021-02-21 21:16:32,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:32" (1/1) ... [2021-02-21 21:16:32,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:32" (1/1) ... [2021-02-21 21:16:32,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:32" (1/1) ... [2021-02-21 21:16:32,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:32" (1/1) ... [2021-02-21 21:16:32,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:32" (1/1) ... [2021-02-21 21:16:32,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:16:32,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:16:32,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:16:32,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:16:32,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:32" (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 [2021-02-21 21:16:32,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:16:32,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:16:32,459 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:16:32,459 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:16:32,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:16:32,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:16:32,459 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:16:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:16:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:16:32,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:16:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:16:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:16:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:16:32,461 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:16:32,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:16:32,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:16:32,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:16:32,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:16:32,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:16:32,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:16:32,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:16:32,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:16:32,970 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:16:32,971 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 21:16:32,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:32 BoogieIcfgContainer [2021-02-21 21:16:32,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:16:33,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:16:33,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:16:33,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:16:33,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:16:32" (1/3) ... [2021-02-21 21:16:33,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7761f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:33, skipping insertion in model container [2021-02-21 21:16:33,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:32" (2/3) ... [2021-02-21 21:16:33,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7761f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:33, skipping insertion in model container [2021-02-21 21:16:33,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:32" (3/3) ... [2021-02-21 21:16:33,017 INFO L111 eAbstractionObserver]: Analyzing ICFG indp2f.c [2021-02-21 21:16:33,035 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:16:33,047 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:16:33,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:16:33,102 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:16:33,102 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:16:33,103 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:16:33,103 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:16:33,103 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:16:33,103 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:16:33,103 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:16:33,103 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:16:33,122 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2021-02-21 21:16:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 21:16:33,135 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:33,136 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] [2021-02-21 21:16:33,136 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:33,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:33,143 INFO L82 PathProgramCache]: Analyzing trace with hash -450027950, now seen corresponding path program 1 times [2021-02-21 21:16:33,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:33,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161927556] [2021-02-21 21:16:33,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:33,240 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:33,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:33,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:33,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:33,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:33,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:33,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:33,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:33,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:33,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:33,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:33,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161927556] [2021-02-21 21:16:33,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:33,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:16:33,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572403137] [2021-02-21 21:16:33,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:16:33,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:33,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:16:33,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:33,505 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 3 states. [2021-02-21 21:16:33,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:33,700 INFO L93 Difference]: Finished difference Result 115 states and 134 transitions. [2021-02-21 21:16:33,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:16:33,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-21 21:16:33,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:33,711 INFO L225 Difference]: With dead ends: 115 [2021-02-21 21:16:33,712 INFO L226 Difference]: Without dead ends: 61 [2021-02-21 21:16:33,716 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 [2021-02-21 21:16:33,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-21 21:16:33,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-21 21:16:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-21 21:16:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2021-02-21 21:16:33,772 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 38 [2021-02-21 21:16:33,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:33,775 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2021-02-21 21:16:33,775 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:16:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2021-02-21 21:16:33,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-21 21:16:33,777 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:33,777 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] [2021-02-21 21:16:33,777 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:16:33,778 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:33,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:33,779 INFO L82 PathProgramCache]: Analyzing trace with hash 549876134, now seen corresponding path program 1 times [2021-02-21 21:16:33,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:33,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102288211] [2021-02-21 21:16:33,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:33,783 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:33,851 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:33,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:33,853 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:33,854 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:33,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:33,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:33,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:33,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:33,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:33,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:33,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:33,935 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:33,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:33,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:16:33,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102288211] [2021-02-21 21:16:33,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:33,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:33,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229170085] [2021-02-21 21:16:33,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:33,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:33,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:33,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:33,946 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand 5 states. [2021-02-21 21:16:34,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:34,221 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2021-02-21 21:16:34,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:34,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-21 21:16:34,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:34,233 INFO L225 Difference]: With dead ends: 113 [2021-02-21 21:16:34,233 INFO L226 Difference]: Without dead ends: 83 [2021-02-21 21:16:34,237 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 [2021-02-21 21:16:34,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-21 21:16:34,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2021-02-21 21:16:34,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-21 21:16:34,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-02-21 21:16:34,287 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 38 [2021-02-21 21:16:34,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:34,291 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-02-21 21:16:34,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-02-21 21:16:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-21 21:16:34,294 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:34,294 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] [2021-02-21 21:16:34,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:16:34,294 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:34,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:34,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2050387401, now seen corresponding path program 1 times [2021-02-21 21:16:34,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:34,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286163028] [2021-02-21 21:16:34,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:34,325 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:34,327 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:34,347 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-21 21:16:34,347 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:16:34,352 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:16:34,371 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-21 21:16:34,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:16:34 BoogieIcfgContainer [2021-02-21 21:16:34,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:16:34,374 INFO L168 Benchmark]: Toolchain (without parser) took 2353.34 ms. Allocated memory was 151.0 MB in the beginning and 202.4 MB in the end (delta: 51.4 MB). Free memory was 127.7 MB in the beginning and 170.9 MB in the end (delta: -43.2 MB). Peak memory consumption was 9.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:34,375 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:16:34,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.54 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:34,377 INFO L168 Benchmark]: Boogie Preprocessor took 40.79 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:34,377 INFO L168 Benchmark]: RCFGBuilder took 659.70 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 131.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:34,378 INFO L168 Benchmark]: TraceAbstraction took 1370.04 ms. Allocated memory was 151.0 MB in the beginning and 202.4 MB in the end (delta: 51.4 MB). Free memory was 131.2 MB in the beginning and 170.9 MB in the end (delta: -39.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:34,382 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 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.54 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.79 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 659.70 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 131.7 MB in the end (delta: -16.7 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1370.04 ms. Allocated memory was 151.0 MB in the beginning and 202.4 MB in the end (delta: 51.4 MB). Free memory was 131.2 MB in the beginning and 170.9 MB in the end (delta: -39.7 MB). Peak memory consumption was 12.7 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); [L30] i=0 [L30] COND TRUE i