/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/trex01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:24:51,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:24:51,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:24:51,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:24:51,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:24:51,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:24:51,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:24:51,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:24:51,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:24:51,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:24:51,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:24:51,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:24:51,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:24:51,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:24:51,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:24:51,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:24:51,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:24:51,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:24:51,803 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:24:51,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:24:51,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:24:51,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:24:51,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:24:51,834 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:24:51,834 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:24:51,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:24:51,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:24:51,835 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:24:51,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:24:51,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:24:51,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:24:51,836 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:24:51,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:24:51,837 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:24:51,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:24:51,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:24:51,838 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:24:51,838 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:24:51,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:24:51,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:24:51,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:24:51,839 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:24:51,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:24:51,839 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:24:52,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:24:52,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:24:52,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:24:52,316 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:24:52,318 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:24:52,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex01-2.i [2020-10-24 02:24:52,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ee1735f/c3763a309310400490d2bc5cf9d54b98/FLAG0be9ab751 [2020-10-24 02:24:53,147 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:24:53,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex01-2.i [2020-10-24 02:24:53,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ee1735f/c3763a309310400490d2bc5cf9d54b98/FLAG0be9ab751 [2020-10-24 02:24:53,466 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07ee1735f/c3763a309310400490d2bc5cf9d54b98 [2020-10-24 02:24:53,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:24:53,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:24:53,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:24:53,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:24:53,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:24:53,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:53" (1/1) ... [2020-10-24 02:24:53,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79e98f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:53, skipping insertion in model container [2020-10-24 02:24:53,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:53" (1/1) ... [2020-10-24 02:24:53,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:24:53,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:24:53,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:24:53,785 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:24:53,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:24:53,822 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:24:53,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:53 WrapperNode [2020-10-24 02:24:53,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:24:53,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:24:53,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:24:53,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:24:53,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:53" (1/1) ... [2020-10-24 02:24:53,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:53" (1/1) ... [2020-10-24 02:24:53,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:53" (1/1) ... [2020-10-24 02:24:53,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:53" (1/1) ... [2020-10-24 02:24:53,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:53" (1/1) ... [2020-10-24 02:24:53,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:53" (1/1) ... [2020-10-24 02:24:53,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:53" (1/1) ... [2020-10-24 02:24:53,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:24:53,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:24:53,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:24:53,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:24:53,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:53" (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 [2020-10-24 02:24:53,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:24:53,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:24:53,950 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:24:53,950 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:24:53,950 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:24:53,950 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-24 02:24:53,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:24:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:24:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:24:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 02:24:53,951 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 02:24:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:24:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:24:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:24:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:24:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-24 02:24:53,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:24:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-24 02:24:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:24:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:24:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:24:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:24:53,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:24:53,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:24:53,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:24:54,292 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:24:54,292 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-24 02:24:54,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:54 BoogieIcfgContainer [2020-10-24 02:24:54,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:24:54,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:24:54,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:24:54,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:24:54,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:24:53" (1/3) ... [2020-10-24 02:24:54,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5665b41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:54, skipping insertion in model container [2020-10-24 02:24:54,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:53" (2/3) ... [2020-10-24 02:24:54,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5665b41f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:54, skipping insertion in model container [2020-10-24 02:24:54,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:54" (3/3) ... [2020-10-24 02:24:54,304 INFO L111 eAbstractionObserver]: Analyzing ICFG trex01-2.i [2020-10-24 02:24:54,317 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:24:54,322 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:24:54,337 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:24:54,363 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:24:54,363 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:24:54,363 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:24:54,363 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:24:54,364 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:24:54,364 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:24:54,364 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:24:54,364 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:24:54,383 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-10-24 02:24:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-24 02:24:54,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:24:54,395 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] [2020-10-24 02:24:54,396 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:24:54,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:24:54,403 INFO L82 PathProgramCache]: Analyzing trace with hash 290264473, now seen corresponding path program 1 times [2020-10-24 02:24:54,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:24:54,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680531881] [2020-10-24 02:24:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:24:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:54,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:24:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:24:54,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680531881] [2020-10-24 02:24:54,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:24:54,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:24:54,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856448132] [2020-10-24 02:24:54,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:24:54,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:24:54,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:24:54,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:24:54,976 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 6 states. [2020-10-24 02:24:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:24:55,462 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2020-10-24 02:24:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 02:24:55,464 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-24 02:24:55,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:24:55,472 INFO L225 Difference]: With dead ends: 97 [2020-10-24 02:24:55,473 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:24:55,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-24 02:24:55,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:24:55,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:24:55,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:24:55,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:24:55,513 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-10-24 02:24:55,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:24:55,515 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:24:55,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:24:55,515 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:24:55,515 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:24:55,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:24:55,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:24:56,088 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-24 02:24:56,088 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-24 02:24:56,088 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:24:56,088 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:24:56,088 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:24:56,089 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-24 02:24:56,089 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:24:56,089 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 02:24:56,089 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-24 02:24:56,089 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-24 02:24:56,089 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:24:56,090 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:24:56,090 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-24 02:24:56,090 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:24:56,090 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:24:56,090 INFO L270 CegarLoopResult]: At program point L31(lines 25 47) the Hoare annotation is: (<= 1 f_~z~0) [2020-10-24 02:24:56,091 INFO L270 CegarLoopResult]: At program point L27(lines 27 29) the Hoare annotation is: (<= 1 f_~z~0) [2020-10-24 02:24:56,091 INFO L277 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: true [2020-10-24 02:24:56,091 INFO L277 CegarLoopResult]: At program point fEXIT(lines 25 47) the Hoare annotation is: true [2020-10-24 02:24:56,091 INFO L277 CegarLoopResult]: At program point fENTRY(lines 25 47) the Hoare annotation is: true [2020-10-24 02:24:56,091 INFO L277 CegarLoopResult]: At program point L36-2(lines 25 47) the Hoare annotation is: true [2020-10-24 02:24:56,091 INFO L277 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: true [2020-10-24 02:24:56,092 INFO L277 CegarLoopResult]: At program point L41-1(line 41) the Hoare annotation is: true [2020-10-24 02:24:56,092 INFO L277 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-10-24 02:24:56,092 INFO L277 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: true [2020-10-24 02:24:56,092 INFO L277 CegarLoopResult]: At program point L42(line 42) the Hoare annotation is: true [2020-10-24 02:24:56,092 INFO L277 CegarLoopResult]: At program point L38(lines 38 45) the Hoare annotation is: true [2020-10-24 02:24:56,092 INFO L277 CegarLoopResult]: At program point L38-2(lines 36 46) the Hoare annotation is: true [2020-10-24 02:24:56,093 INFO L270 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: (<= 1 f_~z~0) [2020-10-24 02:24:56,093 INFO L270 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: (<= 1 f_~z~0) [2020-10-24 02:24:56,093 INFO L270 CegarLoopResult]: At program point L30-3(line 30) the Hoare annotation is: (<= 1 f_~z~0) [2020-10-24 02:24:56,093 INFO L277 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-10-24 02:24:56,093 INFO L270 CegarLoopResult]: At program point L30-4(line 30) the Hoare annotation is: (<= 1 f_~z~0) [2020-10-24 02:24:56,094 INFO L277 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-10-24 02:24:56,094 INFO L277 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: true [2020-10-24 02:24:56,094 INFO L277 CegarLoopResult]: At program point L26-3(line 26) the Hoare annotation is: true [2020-10-24 02:24:56,094 INFO L277 CegarLoopResult]: At program point L26-4(line 26) the Hoare annotation is: true [2020-10-24 02:24:56,094 INFO L277 CegarLoopResult]: At program point L26-5(line 26) the Hoare annotation is: true [2020-10-24 02:24:56,094 INFO L277 CegarLoopResult]: At program point L26-6(line 26) the Hoare annotation is: true [2020-10-24 02:24:56,095 INFO L277 CegarLoopResult]: At program point L26-7(line 26) the Hoare annotation is: true [2020-10-24 02:24:56,095 INFO L277 CegarLoopResult]: At program point L26-8(line 26) the Hoare annotation is: true [2020-10-24 02:24:56,095 INFO L277 CegarLoopResult]: At program point L26-9(line 26) the Hoare annotation is: true [2020-10-24 02:24:56,095 INFO L277 CegarLoopResult]: At program point L39(lines 39 40) the Hoare annotation is: true [2020-10-24 02:24:56,095 INFO L270 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (<= 1 f_~z~0) [2020-10-24 02:24:56,095 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:24:56,096 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:24:56,096 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 02:24:56,096 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 02:24:56,096 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-24 02:24:56,096 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-24 02:24:56,096 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:24:56,096 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:24:56,097 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:24:56,097 INFO L277 CegarLoopResult]: At program point L49(line 49) the Hoare annotation is: true [2020-10-24 02:24:56,097 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 48 56) the Hoare annotation is: true [2020-10-24 02:24:56,097 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 48 56) the Hoare annotation is: true [2020-10-24 02:24:56,097 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 48 56) the Hoare annotation is: true [2020-10-24 02:24:56,097 INFO L277 CegarLoopResult]: At program point L53(line 53) the Hoare annotation is: true [2020-10-24 02:24:56,098 INFO L277 CegarLoopResult]: At program point L53-1(lines 50 54) the Hoare annotation is: true [2020-10-24 02:24:56,098 INFO L277 CegarLoopResult]: At program point L51(line 51) the Hoare annotation is: true [2020-10-24 02:24:56,098 INFO L277 CegarLoopResult]: At program point L50(lines 50 54) the Hoare annotation is: true [2020-10-24 02:24:56,098 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:24:56,098 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-24 02:24:56,099 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:24:56,099 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:24:56,099 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:24:56,099 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:24:56,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:24:56 BoogieIcfgContainer [2020-10-24 02:24:56,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:24:56,122 INFO L168 Benchmark]: Toolchain (without parser) took 2648.02 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 126.4 MB in the beginning and 168.8 MB in the end (delta: -42.3 MB). Peak memory consumption was 76.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:56,123 INFO L168 Benchmark]: CDTParser took 0.21 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. [2020-10-24 02:24:56,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.16 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:56,125 INFO L168 Benchmark]: Boogie Preprocessor took 36.79 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:56,126 INFO L168 Benchmark]: RCFGBuilder took 432.68 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 133.0 MB in the end (delta: -18.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:56,127 INFO L168 Benchmark]: TraceAbstraction took 1822.54 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 132.5 MB in the beginning and 168.8 MB in the end (delta: -36.2 MB). Peak memory consumption was 81.8 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:56,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 336.16 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 115.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.79 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 432.68 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 133.0 MB in the end (delta: -18.6 MB). Peak memory consumption was 21.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1822.54 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 132.5 MB in the beginning and 168.8 MB in the end (delta: -36.2 MB). Peak memory consumption was 81.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 <= z - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 25]: Procedure Contract for f Derived contract for procedure f: 1 - ProcedureContractResult [Line: 48]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 77 SDslu, 51 SDs, 0 SdLazy, 135 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 62 LocationsWithAnnotation, 97 PreInvPairs, 156 NumberOfFragments, 125 HoareAnnotationTreeSize, 97 FomulaSimplifications, 638 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 62 FomulaSimplificationsInter, 1014 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 2277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...