/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/loops/nec40.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:17:33,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:17:33,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:17:33,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:17:33,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:17:33,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:17:33,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:17:33,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:17:33,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:17:33,610 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:17:33,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:17:33,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:17:33,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:17:33,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:17:33,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:17:33,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:17:33,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:17:33,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:17:33,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:17:33,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:17:33,666 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 21:17:33,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:17:33,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:17:33,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:17:33,695 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:17:33,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:17:33,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:17:33,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:17:33,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:17:33,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:17:33,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:17:33,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:17:33,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:17:33,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:17:33,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:17:33,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:17:33,700 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:17:33,700 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:17:33,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:17:33,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:17:33,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:17:33,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:17:33,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:17:33,705 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:17:34,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:17:34,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:17:34,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:17:34,148 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:17:34,149 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:17:34,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec40.c [2021-02-21 21:17:34,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264b7f12a/a2eba011d5964823a74e95ab1e66462b/FLAG063c59478 [2021-02-21 21:17:34,815 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:17:34,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec40.c [2021-02-21 21:17:34,823 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264b7f12a/a2eba011d5964823a74e95ab1e66462b/FLAG063c59478 [2021-02-21 21:17:35,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264b7f12a/a2eba011d5964823a74e95ab1e66462b [2021-02-21 21:17:35,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:17:35,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:17:35,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:35,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:17:35,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:17:35,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:35" (1/1) ... [2021-02-21 21:17:35,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47595915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:35, skipping insertion in model container [2021-02-21 21:17:35,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:35" (1/1) ... [2021-02-21 21:17:35,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:17:35,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:17:35,403 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec40.c[317,330] [2021-02-21 21:17:35,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:35,443 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:17:35,461 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec40.c[317,330] [2021-02-21 21:17:35,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:35,501 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:17:35,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:35 WrapperNode [2021-02-21 21:17:35,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:35,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:17:35,504 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:17:35,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:17:35,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:35" (1/1) ... [2021-02-21 21:17:35,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:35" (1/1) ... [2021-02-21 21:17:35,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:35" (1/1) ... [2021-02-21 21:17:35,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:35" (1/1) ... [2021-02-21 21:17:35,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:35" (1/1) ... [2021-02-21 21:17:35,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:35" (1/1) ... [2021-02-21 21:17:35,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:35" (1/1) ... [2021-02-21 21:17:35,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:17:35,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:17:35,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:17:35,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:17:35,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:35" (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 21:17:35,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:17:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:17:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:17:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:17:35,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:17:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:17:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:17:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:17:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:17:35,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:17:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:17:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:17:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:17:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:17:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:17:35,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:17:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:17:35,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:17:36,162 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:17:36,163 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:17:36,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:36 BoogieIcfgContainer [2021-02-21 21:17:36,165 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:17:36,167 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:17:36,167 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:17:36,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:17:36,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:17:35" (1/3) ... [2021-02-21 21:17:36,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2315826a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:36, skipping insertion in model container [2021-02-21 21:17:36,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:35" (2/3) ... [2021-02-21 21:17:36,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2315826a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:36, skipping insertion in model container [2021-02-21 21:17:36,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:36" (3/3) ... [2021-02-21 21:17:36,176 INFO L111 eAbstractionObserver]: Analyzing ICFG nec40.c [2021-02-21 21:17:36,184 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:17:36,190 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:17:36,212 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:17:36,239 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:17:36,239 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:17:36,240 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:17:36,240 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:17:36,240 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:17:36,240 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:17:36,240 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:17:36,241 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:17:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2021-02-21 21:17:36,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-21 21:17:36,270 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:36,271 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] [2021-02-21 21:17:36,272 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:36,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:36,279 INFO L82 PathProgramCache]: Analyzing trace with hash -301142605, now seen corresponding path program 1 times [2021-02-21 21:17:36,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:36,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893783350] [2021-02-21 21:17:36,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:36,376 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:36,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:36,534 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:36,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:36,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:36,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:36,643 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:36,644 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:36,657 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 21:17:36,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893783350] [2021-02-21 21:17:36,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:36,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:17:36,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814225245] [2021-02-21 21:17:36,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:17:36,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:36,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:17:36,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:17:36,699 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2021-02-21 21:17:36,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:36,951 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2021-02-21 21:17:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:17:36,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2021-02-21 21:17:36,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:36,963 INFO L225 Difference]: With dead ends: 70 [2021-02-21 21:17:36,963 INFO L226 Difference]: Without dead ends: 43 [2021-02-21 21:17:36,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 21:17:36,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-02-21 21:17:37,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-02-21 21:17:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-21 21:17:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-02-21 21:17:37,015 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 33 [2021-02-21 21:17:37,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:37,016 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-02-21 21:17:37,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:17:37,017 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-02-21 21:17:37,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-21 21:17:37,018 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:37,018 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] [2021-02-21 21:17:37,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:17:37,019 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:37,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1294708575, now seen corresponding path program 1 times [2021-02-21 21:17:37,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:37,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077521316] [2021-02-21 21:17:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:37,025 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:37,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:37,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:37,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:37,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:37,247 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 21:17:37,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077521316] [2021-02-21 21:17:37,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:37,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 21:17:37,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606946178] [2021-02-21 21:17:37,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 21:17:37,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:37,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 21:17:37,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 21:17:37,251 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 4 states. [2021-02-21 21:17:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:37,482 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-02-21 21:17:37,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:17:37,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2021-02-21 21:17:37,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:37,491 INFO L225 Difference]: With dead ends: 62 [2021-02-21 21:17:37,491 INFO L226 Difference]: Without dead ends: 51 [2021-02-21 21:17:37,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 21:17:37,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-21 21:17:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2021-02-21 21:17:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-21 21:17:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-02-21 21:17:37,528 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 35 [2021-02-21 21:17:37,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:37,529 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-02-21 21:17:37,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 21:17:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-02-21 21:17:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-21 21:17:37,533 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:37,533 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:37,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:17:37,534 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:37,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:37,535 INFO L82 PathProgramCache]: Analyzing trace with hash -426646307, now seen corresponding path program 1 times [2021-02-21 21:17:37,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:37,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1473281971] [2021-02-21 21:17:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:37,575 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:17:37,577 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:37,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:17:37,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:17:37,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 21:17:37,788 WARN L141 QuantifierPusher]: treesize reduction 11, result has 60.7 percent of original size [2021-02-21 21:17:37,789 WARN L147 QuantifierPusher]: treesize reduction 11, result has 60.7 percent of original size 17 [2021-02-21 21:17:37,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:37,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:37,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:37,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 21:17:37,912 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,913 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 21:17:37,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:37,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 21:17:37,930 WARN L141 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size [2021-02-21 21:17:37,931 WARN L147 QuantifierPusher]: treesize reduction 4, result has 73.3 percent of original size 11 [2021-02-21 21:17:37,941 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 21:17:37,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1473281971] [2021-02-21 21:17:37,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:37,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 21:17:37,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206758726] [2021-02-21 21:17:37,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 21:17:37,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:37,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 21:17:37,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 21:17:37,946 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 8 states. [2021-02-21 21:17:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:38,147 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2021-02-21 21:17:38,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 21:17:38,147 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2021-02-21 21:17:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:38,149 INFO L225 Difference]: With dead ends: 45 [2021-02-21 21:17:38,149 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:17:38,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-02-21 21:17:38,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:17:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:17:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:17:38,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:17:38,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2021-02-21 21:17:38,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:38,154 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:17:38,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 21:17:38,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:17:38,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:17:38,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:17:38,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:17:38,731 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 21:17:38,731 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 21:17:38,731 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 21:17:38,732 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-21 21:17:38,732 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-21 21:17:38,732 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:38,732 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-21 21:17:38,732 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:38,732 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-21 21:17:38,733 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-02-21 21:17:38,733 INFO L185 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|))) [2021-02-21 21:17:38,733 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (= (select |#valid| |~#x~0.base|) 1) [2021-02-21 21:17:38,734 INFO L185 CegarLoopUtils]: At program point L14-1(line 14) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-02-21 21:17:38,734 INFO L185 CegarLoopUtils]: At program point L13-1(line 13) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1)) [2021-02-21 21:17:38,735 INFO L185 CegarLoopUtils]: At program point L14-2(line 14) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-02-21 21:17:38,735 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|))) [2021-02-21 21:17:38,736 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~j~0 |old(~j~0)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#memory_int| |old(#memory_int)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#x~0.base| |old(~#x~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#x~0.offset| |old(~#x~0.offset)|) (= |~#y~0.offset| |old(~#y~0.offset)|) (= ~i~0 |old(~i~0)|) (= ~k~0 |old(~k~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#y~0.base| |old(~#y~0.base)|)) [2021-02-21 21:17:38,736 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-21 21:17:38,736 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-21 21:17:38,737 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-02-21 21:17:38,737 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:17:38,737 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#memory_int| |~#x~0.base|) ((as const (Array Int Int)) 0)) (= (select |#valid| |~#x~0.base|) 1) (not (= |~#x~0.base| |~#y~0.base|)) (= ~i~0 0)) [2021-02-21 21:17:38,737 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:17:38,737 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:17:38,737 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,738 INFO L185 CegarLoopUtils]: At program point L27-1(lines 27 28) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,738 INFO L185 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,738 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 16 31) the Hoare annotation is: true [2021-02-21 21:17:38,738 INFO L192 CegarLoopUtils]: At program point L27-3(line 27) the Hoare annotation is: true [2021-02-21 21:17:38,738 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,739 INFO L185 CegarLoopUtils]: At program point L21-1(line 21) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,739 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (not (= (select |#valid| |~#x~0.base|) 1)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)))) [2021-02-21 21:17:38,739 INFO L185 CegarLoopUtils]: At program point L21-2(line 21) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,740 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (not (= (select |#valid| |~#x~0.base|) 1)) (and (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= ~i~0 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2021-02-21 21:17:38,740 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (not (= (select |#valid| |~#x~0.base|) 1)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)))) [2021-02-21 21:17:38,740 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 16 31) the Hoare annotation is: true [2021-02-21 21:17:38,741 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 16 31) the Hoare annotation is: (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (not (= (select |#valid| |~#x~0.base|) 1)) (and (= ~k~0 |old(~k~0)|) (= |#memory_int| |old(#memory_int)|) (= ~i~0 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|)))) [2021-02-21 21:17:38,741 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,742 INFO L192 CegarLoopUtils]: At program point L26(lines 26 28) the Hoare annotation is: true [2021-02-21 21:17:38,742 INFO L185 CegarLoopUtils]: At program point L24(lines 16 31) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (= ~i~0 0) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,742 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,743 INFO L185 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,743 INFO L185 CegarLoopUtils]: At program point L22-2(line 22) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,744 INFO L185 CegarLoopUtils]: At program point L20-1(lines 20 23) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= |main_#t~mem8| 0) (= ~i~0 0)) (not (= (select |#valid| |~#x~0.base|) 1)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))))) [2021-02-21 21:17:38,744 INFO L185 CegarLoopUtils]: At program point L20-2(line 20) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (= ~i~0 0) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,745 INFO L185 CegarLoopUtils]: At program point L20-4(line 20) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,745 INFO L185 CegarLoopUtils]: At program point L20-5(lines 20 23) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (or (= |~#x~0.base| |~#y~0.base|) (not (= |old(~i~0)| 0)) (not (= (select |#valid| |~#x~0.base|) 1)) (not (= .cse0 (select |old(#memory_int)| |~#x~0.base|))) (and (= (select |#memory_int| |~#x~0.base|) .cse0) (= ~i~0 0)))) [2021-02-21 21:17:38,746 INFO L185 CegarLoopUtils]: At program point L20-6(lines 20 23) the Hoare annotation is: (or (not (= (select |#valid| |~#x~0.base|) 1)) (not (= |old(~i~0)| 0)) (= ~i~0 0) (not (= ((as const (Array Int Int)) 0) (select |old(#memory_int)| |~#x~0.base|))) (= |~#y~0.base| |~#x~0.base|)) [2021-02-21 21:17:38,746 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-21 21:17:38,746 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-02-21 21:17:38,747 INFO L192 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: true [2021-02-21 21:17:38,747 INFO L192 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: true [2021-02-21 21:17:38,747 INFO L192 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: true [2021-02-21 21:17:38,747 INFO L192 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-02-21 21:17:38,747 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: true [2021-02-21 21:17:38,759 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:558) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:256) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-21 21:17:38,768 INFO L168 Benchmark]: Toolchain (without parser) took 3566.15 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 127.2 MB in the beginning and 90.5 MB in the end (delta: 36.7 MB). Peak memory consumption was 79.9 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:38,768 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:17:38,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.27 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:38,775 INFO L168 Benchmark]: Boogie Preprocessor took 80.87 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:38,775 INFO L168 Benchmark]: RCFGBuilder took 579.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 130.5 MB in the end (delta: -15.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:38,777 INFO L168 Benchmark]: TraceAbstraction took 2596.90 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 130.1 MB in the beginning and 90.5 MB in the end (delta: 39.6 MB). Peak memory consumption was 83.3 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:38,789 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.27 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.87 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 579.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 130.5 MB in the end (delta: -15.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2596.90 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 130.1 MB in the beginning and 90.5 MB in the end (delta: 39.6 MB). Peak memory consumption was 83.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...