/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/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:46:45,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:46:45,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:46:45,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:46:45,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:46:45,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:46:45,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:46:45,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:46:45,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:46:45,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:46:45,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:46:45,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:46:45,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:46:45,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:46:45,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:46:45,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:46:45,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:46:45,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:46:45,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:46:45,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:46:45,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:46:45,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:46:45,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:46:45,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:46:45,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:46:45,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:46:45,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:46:45,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:46:45,401 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 18:46:45,428 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:46:45,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:46:45,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:46:45,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:46:45,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:46:45,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:46:45,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:46:45,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:46:45,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:46:45,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:46:45,437 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:46:45,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:46:45,437 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:46:45,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:46:45,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:46:45,438 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:46:45,438 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:46:45,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:46:45,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:46:45,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:46:45,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:46:45,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:46:45,440 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:46:45,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:46:45,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:46:45,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:46:45,966 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:46:45,967 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:46:45,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2021-02-23 18:46:46,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a35f1dc12/8dd020cec78645d1870e7fa452f32f7f/FLAG5ff418383 [2021-02-23 18:46:46,641 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:46:46,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condnf.c [2021-02-23 18:46:46,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a35f1dc12/8dd020cec78645d1870e7fa452f32f7f/FLAG5ff418383 [2021-02-23 18:46:47,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a35f1dc12/8dd020cec78645d1870e7fa452f32f7f [2021-02-23 18:46:47,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:46:47,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:46:47,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:47,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:46:47,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:46:47,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:47" (1/1) ... [2021-02-23 18:46:47,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@467cc3bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:47, skipping insertion in model container [2021-02-23 18:46:47,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:47" (1/1) ... [2021-02-23 18:46:47,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:46:47,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:46:47,268 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/condnf.c[589,602] [2021-02-23 18:46:47,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:47,322 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:46:47,341 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/condnf.c[589,602] [2021-02-23 18:46:47,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:47,392 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:46:47,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:47 WrapperNode [2021-02-23 18:46:47,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:47,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:46:47,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:46:47,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:46:47,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:47" (1/1) ... [2021-02-23 18:46:47,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:47" (1/1) ... [2021-02-23 18:46:47,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:47" (1/1) ... [2021-02-23 18:46:47,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:47" (1/1) ... [2021-02-23 18:46:47,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:47" (1/1) ... [2021-02-23 18:46:47,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:47" (1/1) ... [2021-02-23 18:46:47,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:47" (1/1) ... [2021-02-23 18:46:47,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:46:47,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:46:47,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:46:47,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:46:47,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:47" (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 18:46:47,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:46:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:46:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:46:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:46:47,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:46:47,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:46:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:46:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:46:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:46:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:46:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:46:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:46:47,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:46:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:46:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:46:47,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:46:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:46:47,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:46:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:46:47,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:46:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:46:47,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:46:48,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:46:48,177 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:46:48,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:48 BoogieIcfgContainer [2021-02-23 18:46:48,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:46:48,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:46:48,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:46:48,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:46:48,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:46:47" (1/3) ... [2021-02-23 18:46:48,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d99d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:48, skipping insertion in model container [2021-02-23 18:46:48,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:47" (2/3) ... [2021-02-23 18:46:48,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d99d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:48, skipping insertion in model container [2021-02-23 18:46:48,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:48" (3/3) ... [2021-02-23 18:46:48,190 INFO L111 eAbstractionObserver]: Analyzing ICFG condnf.c [2021-02-23 18:46:48,198 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:46:48,203 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:46:48,225 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:46:48,256 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:46:48,256 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:46:48,256 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:46:48,256 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:46:48,256 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:46:48,257 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:46:48,257 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:46:48,257 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:46:48,275 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2021-02-23 18:46:48,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 18:46:48,287 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:48,288 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] [2021-02-23 18:46:48,288 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:48,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:48,296 INFO L82 PathProgramCache]: Analyzing trace with hash -407844847, now seen corresponding path program 1 times [2021-02-23 18:46:48,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:48,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627192366] [2021-02-23 18:46:48,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:48,394 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:48,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:48,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:48,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:48,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:48,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:48,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:48,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:48,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:48,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:48,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:48,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:48,779 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 18:46:48,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627192366] [2021-02-23 18:46:48,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:48,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:46:48,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464614744] [2021-02-23 18:46:48,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:46:48,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:48,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:46:48,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:46:48,810 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2021-02-23 18:46:49,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:49,062 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions. [2021-02-23 18:46:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:46:49,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-23 18:46:49,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:49,073 INFO L225 Difference]: With dead ends: 113 [2021-02-23 18:46:49,074 INFO L226 Difference]: Without dead ends: 60 [2021-02-23 18:46:49,078 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 18:46:49,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-02-23 18:46:49,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-02-23 18:46:49,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-23 18:46:49,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-02-23 18:46:49,143 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 36 [2021-02-23 18:46:49,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:49,144 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-02-23 18:46:49,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:46:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-02-23 18:46:49,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 18:46:49,146 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:49,146 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] [2021-02-23 18:46:49,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:46:49,147 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:49,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:49,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1753803708, now seen corresponding path program 1 times [2021-02-23 18:46:49,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:49,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745956486] [2021-02-23 18:46:49,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:49,151 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:49,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:49,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:49,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:49,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:49,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:49,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:49,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:49,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:49,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:49,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:49,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:49,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:49,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:49,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:49,322 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 18:46:49,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745956486] [2021-02-23 18:46:49,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:49,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:46:49,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712260218] [2021-02-23 18:46:49,323 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:46:49,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:49,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:46:49,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:46:49,328 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 5 states. [2021-02-23 18:46:49,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:49,810 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2021-02-23 18:46:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:46:49,811 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-23 18:46:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:49,821 INFO L225 Difference]: With dead ends: 110 [2021-02-23 18:46:49,821 INFO L226 Difference]: Without dead ends: 83 [2021-02-23 18:46:49,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:46:49,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-23 18:46:49,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 62. [2021-02-23 18:46:49,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-23 18:46:49,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-02-23 18:46:49,862 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 36 [2021-02-23 18:46:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:49,867 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-02-23 18:46:49,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:46:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-02-23 18:46:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 18:46:49,871 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:49,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:49,872 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:46:49,873 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:49,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:49,874 INFO L82 PathProgramCache]: Analyzing trace with hash 146462172, now seen corresponding path program 1 times [2021-02-23 18:46:49,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:49,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923268206] [2021-02-23 18:46:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:49,911 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:49,920 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:50,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:50,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:50,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:50,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:50,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:50,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:50,086 WARN L141 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-02-23 18:46:50,087 WARN L147 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size 15 [2021-02-23 18:46:50,115 WARN L141 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size [2021-02-23 18:46:50,119 WARN L147 QuantifierPusher]: treesize reduction 9, result has 79.5 percent of original size 35 [2021-02-23 18:46:50,163 WARN L141 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size [2021-02-23 18:46:50,164 WARN L147 QuantifierPusher]: treesize reduction 9, result has 55.0 percent of original size 11 [2021-02-23 18:46:50,185 WARN L141 QuantifierPusher]: treesize reduction 17, result has 67.3 percent of original size [2021-02-23 18:46:50,187 WARN L147 QuantifierPusher]: treesize reduction 17, result has 67.3 percent of original size 35 [2021-02-23 18:46:50,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:50,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:50,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:50,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:46:50,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:50,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:46:50,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:50,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:50,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:50,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:50,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:50,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:50,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:50,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:50,341 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:50,352 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 18:46:50,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923268206] [2021-02-23 18:46:50,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:50,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-23 18:46:50,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263476641] [2021-02-23 18:46:50,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-23 18:46:50,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:50,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-23 18:46:50,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-23 18:46:50,356 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 11 states. [2021-02-23 18:46:51,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:51,138 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2021-02-23 18:46:51,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-23 18:46:51,139 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2021-02-23 18:46:51,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:51,141 INFO L225 Difference]: With dead ends: 116 [2021-02-23 18:46:51,141 INFO L226 Difference]: Without dead ends: 114 [2021-02-23 18:46:51,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-02-23 18:46:51,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-02-23 18:46:51,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 78. [2021-02-23 18:46:51,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-23 18:46:51,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2021-02-23 18:46:51,164 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 51 [2021-02-23 18:46:51,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:51,165 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2021-02-23 18:46:51,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-23 18:46:51,165 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2021-02-23 18:46:51,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 18:46:51,167 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:51,167 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] [2021-02-23 18:46:51,167 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:46:51,168 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:51,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:51,168 INFO L82 PathProgramCache]: Analyzing trace with hash -904490591, now seen corresponding path program 1 times [2021-02-23 18:46:51,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:51,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462059188] [2021-02-23 18:46:51,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:51,174 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:51,176 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:46:51,231 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:46:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:46:51,295 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:46:51,344 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:46:51,345 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:46:51,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:46:51,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:46:51 BoogieIcfgContainer [2021-02-23 18:46:51,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:46:51,373 INFO L168 Benchmark]: Toolchain (without parser) took 4337.43 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 127.6 MB in the beginning and 87.4 MB in the end (delta: 40.1 MB). Peak memory consumption was 84.3 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:51,374 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:46:51,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.30 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 116.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:51,381 INFO L168 Benchmark]: Boogie Preprocessor took 93.77 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:51,381 INFO L168 Benchmark]: RCFGBuilder took 688.25 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 126.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:51,383 INFO L168 Benchmark]: TraceAbstraction took 3188.73 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 126.2 MB in the beginning and 87.4 MB in the end (delta: 38.7 MB). Peak memory consumption was 83.3 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:51,386 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 340.30 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 116.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 93.77 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 688.25 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 126.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3188.73 ms. Allocated memory was 151.0 MB in the beginning and 194.0 MB in the end (delta: 43.0 MB). Free memory was 126.2 MB in the beginning and 87.4 MB in the end (delta: 38.7 MB). Peak memory consumption was 83.3 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] int *a = malloc(sizeof(int)*N); [L30] i=0 [L30] COND TRUE i N [L38] EXPR a[i] [L38] a[i] = a[i] [L35] i++ [L35] COND FALSE !(i