/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/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:16:15,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:16:15,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:16:15,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 21:16:15,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 21:16:15,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 21:16:15,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 21:16:15,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 21:16:15,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 21:16:15,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 21:16:15,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 21:16:15,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 21:16:15,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:16:15,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:16:15,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:16:15,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:16:15,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:16:15,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:16:15,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:16:15,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:16:15,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:16:15,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:16:15,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:16:15,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:16:15,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:16:15,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:16:15,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:16:15,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:16:15,532 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 21:16:15,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:16:15,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:16:15,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:16:15,557 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:16:15,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:16:15,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:16:15,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:16:15,558 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:16:15,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:16:15,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:16:15,559 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:16:15,559 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:16:15,560 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:16:15,560 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:16:15,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:16:15,560 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:16:15,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:16:15,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:16:15,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:16:15,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:16:15,561 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:16:15,562 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:16:15,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:16:15,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:16:15,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:16:15,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:16:15,985 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:16:15,986 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:16:15,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2021-02-21 21:16:16,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85e987300/46fe37fbfd8c43e1a763bf930e4a677f/FLAG30bfa3b0c [2021-02-21 21:16:16,631 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:16:16,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condgf.c [2021-02-21 21:16:16,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85e987300/46fe37fbfd8c43e1a763bf930e4a677f/FLAG30bfa3b0c [2021-02-21 21:16:17,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85e987300/46fe37fbfd8c43e1a763bf930e4a677f [2021-02-21 21:16:17,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:16:17,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:16:17,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:17,055 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:16:17,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:16:17,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25576318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17, skipping insertion in model container [2021-02-21 21:16:17,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:16:17,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:16:17,320 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/condgf.c[589,602] [2021-02-21 21:16:17,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:17,368 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:16:17,385 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/condgf.c[589,602] [2021-02-21 21:16:17,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:16:17,432 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:16:17,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17 WrapperNode [2021-02-21 21:16:17,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:16:17,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:16:17,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:16:17,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:16:17,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (1/1) ... [2021-02-21 21:16:17,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:16:17,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:16:17,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:16:17,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:16:17,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (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 21:16:17,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:16:17,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:16:17,581 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:16:17,581 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:16:17,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:16:17,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:16:17,582 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:16:17,582 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:16:17,582 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:16:17,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:16:17,583 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:16:17,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:16:17,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:16:17,584 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 21:16:17,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:16:17,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 21:16:17,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:16:17,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:16:17,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:16:17,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:16:17,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:16:17,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:16:18,127 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:16:18,128 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 21:16:18,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:18 BoogieIcfgContainer [2021-02-21 21:16:18,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:16:18,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:16:18,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:16:18,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:16:18,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:16:17" (1/3) ... [2021-02-21 21:16:18,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d59a176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:18, skipping insertion in model container [2021-02-21 21:16:18,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:16:17" (2/3) ... [2021-02-21 21:16:18,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d59a176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:16:18, skipping insertion in model container [2021-02-21 21:16:18,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:16:18" (3/3) ... [2021-02-21 21:16:18,138 INFO L111 eAbstractionObserver]: Analyzing ICFG condgf.c [2021-02-21 21:16:18,145 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:16:18,149 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:16:18,167 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:16:18,189 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:16:18,189 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:16:18,189 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:16:18,189 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:16:18,189 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:16:18,190 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:16:18,190 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:16:18,190 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:16:18,206 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2021-02-21 21:16:18,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-21 21:16:18,217 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:18,218 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] [2021-02-21 21:16:18,218 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:18,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:18,225 INFO L82 PathProgramCache]: Analyzing trace with hash -2120485220, now seen corresponding path program 1 times [2021-02-21 21:16:18,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:18,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847093235] [2021-02-21 21:16:18,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:18,321 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:18,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:18,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:18,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,549 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 21:16:18,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847093235] [2021-02-21 21:16:18,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:18,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:16:18,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889769586] [2021-02-21 21:16:18,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:16:18,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:18,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:16:18,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:16:18,577 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 3 states. [2021-02-21 21:16:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:18,774 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2021-02-21 21:16:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:16:18,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2021-02-21 21:16:18,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:18,785 INFO L225 Difference]: With dead ends: 141 [2021-02-21 21:16:18,785 INFO L226 Difference]: Without dead ends: 72 [2021-02-21 21:16:18,789 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 21:16:18,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-02-21 21:16:18,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-02-21 21:16:18,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-02-21 21:16:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2021-02-21 21:16:18,845 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 40 [2021-02-21 21:16:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:18,845 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2021-02-21 21:16:18,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:16:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2021-02-21 21:16:18,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-21 21:16:18,848 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:18,848 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] [2021-02-21 21:16:18,848 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:16:18,849 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:18,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:18,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1012737605, now seen corresponding path program 1 times [2021-02-21 21:16:18,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:18,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345655678] [2021-02-21 21:16:18,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:18,854 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:18,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:18,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,944 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:16:18,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 21:16:18,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:18,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:19,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:16:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:19,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:19,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-21 21:16:19,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:16:19,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:16:19,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:16:19,066 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 21:16:19,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345655678] [2021-02-21 21:16:19,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:16:19,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 21:16:19,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634147300] [2021-02-21 21:16:19,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 21:16:19,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:16:19,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 21:16:19,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:16:19,071 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 5 states. [2021-02-21 21:16:19,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:16:19,462 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2021-02-21 21:16:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:16:19,462 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2021-02-21 21:16:19,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:16:19,466 INFO L225 Difference]: With dead ends: 142 [2021-02-21 21:16:19,466 INFO L226 Difference]: Without dead ends: 103 [2021-02-21 21:16:19,468 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 21:16:19,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-02-21 21:16:19,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 75. [2021-02-21 21:16:19,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2021-02-21 21:16:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2021-02-21 21:16:19,491 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 40 [2021-02-21 21:16:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:16:19,492 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2021-02-21 21:16:19,492 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 21:16:19,492 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2021-02-21 21:16:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-02-21 21:16:19,494 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:16:19,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:16:19,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:16:19,495 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:16:19,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:16:19,496 INFO L82 PathProgramCache]: Analyzing trace with hash -800271576, now seen corresponding path program 1 times [2021-02-21 21:16:19,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:16:19,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578938765] [2021-02-21 21:16:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:16:19,523 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:16:19,525 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:16:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:19,586 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:16:19,651 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:16:19,693 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:16:19,694 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:16:19,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:16:19,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:16:19 BoogieIcfgContainer [2021-02-21 21:16:19,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:16:19,715 INFO L168 Benchmark]: Toolchain (without parser) took 2679.36 ms. Allocated memory was 155.2 MB in the beginning and 189.8 MB in the end (delta: 34.6 MB). Free memory was 132.0 MB in the beginning and 127.4 MB in the end (delta: 4.5 MB). Peak memory consumption was 40.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:19,716 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:16:19,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.58 ms. Allocated memory is still 155.2 MB. Free memory was 130.8 MB in the beginning and 120.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:19,718 INFO L168 Benchmark]: Boogie Preprocessor took 43.80 ms. Allocated memory is still 155.2 MB. Free memory was 120.7 MB in the beginning and 119.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:19,719 INFO L168 Benchmark]: RCFGBuilder took 651.36 ms. Allocated memory is still 155.2 MB. Free memory was 119.0 MB in the beginning and 133.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:19,720 INFO L168 Benchmark]: TraceAbstraction took 1582.39 ms. Allocated memory was 155.2 MB in the beginning and 189.8 MB in the end (delta: 34.6 MB). Free memory was 133.4 MB in the beginning and 127.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:16:19,723 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 378.58 ms. Allocated memory is still 155.2 MB. Free memory was 130.8 MB in the beginning and 120.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.80 ms. Allocated memory is still 155.2 MB. Free memory was 120.7 MB in the beginning and 119.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 651.36 ms. Allocated memory is still 155.2 MB. Free memory was 119.0 MB in the beginning and 133.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1582.39 ms. Allocated memory was 155.2 MB in the beginning and 189.8 MB in the end (delta: 34.6 MB). Free memory was 133.4 MB in the beginning and 127.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 41.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i