/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/loop-invariants/eq2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 06:50:13,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 06:50:13,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 06:50:13,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 06:50:13,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 06:50:13,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 06:50:13,752 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 06:50:13,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 06:50:13,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 06:50:13,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 06:50:13,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 06:50:13,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 06:50:13,761 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 06:50:13,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 06:50:13,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 06:50:13,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 06:50:13,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 06:50:13,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 06:50:13,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 06:50:13,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 06:50:13,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 06:50:13,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 06:50:13,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 06:50:13,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 06:50:13,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 06:50:13,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 06:50:13,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 06:50:13,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 06:50:13,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 06:50:13,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 06:50:13,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 06:50:13,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 06:50:13,839 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 06:50:13,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 06:50:13,839 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 06:50:13,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 06:50:13,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 06:50:13,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 06:50:13,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 06:50:13,841 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 06:50:13,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 06:50:13,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 06:50:13,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 06:50:13,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 06:50:13,842 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 06:50:13,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 06:50:13,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 06:50:13,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 06:50:13,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 06:50:13,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 06:50:13,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 06:50:13,844 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 06:50:14,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 06:50:14,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 06:50:14,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 06:50:14,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 06:50:14,309 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 06:50:14,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq2.c [2020-11-07 06:50:14,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1a89393/c261fb6a7a5549948b926a244ab0fe6b/FLAG2ae0a6647 [2020-11-07 06:50:15,114 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 06:50:15,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq2.c [2020-11-07 06:50:15,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1a89393/c261fb6a7a5549948b926a244ab0fe6b/FLAG2ae0a6647 [2020-11-07 06:50:15,474 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1a89393/c261fb6a7a5549948b926a244ab0fe6b [2020-11-07 06:50:15,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 06:50:15,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 06:50:15,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 06:50:15,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 06:50:15,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 06:50:15,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:50:15" (1/1) ... [2020-11-07 06:50:15,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a06dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:50:15, skipping insertion in model container [2020-11-07 06:50:15,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:50:15" (1/1) ... [2020-11-07 06:50:15,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 06:50:15,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 06:50:15,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:50:15,728 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 06:50:15,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 06:50:15,762 INFO L208 MainTranslator]: Completed translation [2020-11-07 06:50:15,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:50:15 WrapperNode [2020-11-07 06:50:15,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 06:50:15,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 06:50:15,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 06:50:15,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 06:50:15,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:50:15" (1/1) ... [2020-11-07 06:50:15,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:50:15" (1/1) ... [2020-11-07 06:50:15,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:50:15" (1/1) ... [2020-11-07 06:50:15,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:50:15" (1/1) ... [2020-11-07 06:50:15,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:50:15" (1/1) ... [2020-11-07 06:50:15,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:50:15" (1/1) ... [2020-11-07 06:50:15,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:50:15" (1/1) ... [2020-11-07 06:50:15,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 06:50:15,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 06:50:15,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 06:50:15,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 06:50:15,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:50:15" (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 [2020-11-07 06:50:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 06:50:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 06:50:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 06:50:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 06:50:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 06:50:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 06:50:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 06:50:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 06:50:15,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 06:50:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 06:50:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 06:50:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 06:50:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 06:50:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 06:50:15,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 06:50:15,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 06:50:15,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 06:50:15,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 06:50:16,194 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 06:50:16,195 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 06:50:16,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:50:16 BoogieIcfgContainer [2020-11-07 06:50:16,197 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 06:50:16,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 06:50:16,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 06:50:16,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 06:50:16,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:50:15" (1/3) ... [2020-11-07 06:50:16,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67acb30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:50:16, skipping insertion in model container [2020-11-07 06:50:16,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:50:15" (2/3) ... [2020-11-07 06:50:16,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67acb30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:50:16, skipping insertion in model container [2020-11-07 06:50:16,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:50:16" (3/3) ... [2020-11-07 06:50:16,211 INFO L111 eAbstractionObserver]: Analyzing ICFG eq2.c [2020-11-07 06:50:16,254 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 06:50:16,262 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 06:50:16,298 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 06:50:16,353 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 06:50:16,353 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 06:50:16,354 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 06:50:16,354 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 06:50:16,354 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 06:50:16,355 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 06:50:16,355 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 06:50:16,355 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 06:50:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-11-07 06:50:16,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-07 06:50:16,387 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:50:16,388 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] [2020-11-07 06:50:16,389 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:50:16,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:50:16,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1510263874, now seen corresponding path program 1 times [2020-11-07 06:50:16,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:50:16,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010646343] [2020-11-07 06:50:16,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:50:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:16,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:50:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:50:16,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010646343] [2020-11-07 06:50:16,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:50:16,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 06:50:16,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682183545] [2020-11-07 06:50:16,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 06:50:16,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:50:16,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 06:50:16,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 06:50:16,944 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2020-11-07 06:50:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:50:17,089 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-11-07 06:50:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 06:50:17,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-11-07 06:50:17,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:50:17,102 INFO L225 Difference]: With dead ends: 61 [2020-11-07 06:50:17,102 INFO L226 Difference]: Without dead ends: 38 [2020-11-07 06:50:17,106 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 [2020-11-07 06:50:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-07 06:50:17,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-11-07 06:50:17,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-07 06:50:17,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2020-11-07 06:50:17,162 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 29 [2020-11-07 06:50:17,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:50:17,163 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2020-11-07 06:50:17,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 06:50:17,163 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2020-11-07 06:50:17,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-07 06:50:17,164 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:50:17,165 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] [2020-11-07 06:50:17,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 06:50:17,165 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:50:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:50:17,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1383064033, now seen corresponding path program 1 times [2020-11-07 06:50:17,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:50:17,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721665630] [2020-11-07 06:50:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:50:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:17,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:50:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:17,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:50:17,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721665630] [2020-11-07 06:50:17,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 06:50:17,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 06:50:17,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399266753] [2020-11-07 06:50:17,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 06:50:17,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:50:17,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 06:50:17,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-07 06:50:17,599 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 8 states. [2020-11-07 06:50:18,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:50:18,027 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-11-07 06:50:18,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 06:50:18,028 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-07 06:50:18,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:50:18,030 INFO L225 Difference]: With dead ends: 49 [2020-11-07 06:50:18,030 INFO L226 Difference]: Without dead ends: 42 [2020-11-07 06:50:18,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-07 06:50:18,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-07 06:50:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-11-07 06:50:18,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-07 06:50:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-11-07 06:50:18,047 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 30 [2020-11-07 06:50:18,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:50:18,047 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-11-07 06:50:18,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 06:50:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-11-07 06:50:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-07 06:50:18,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 06:50:18,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 06:50:18,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 06:50:18,050 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 06:50:18,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 06:50:18,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1766203427, now seen corresponding path program 1 times [2020-11-07 06:50:18,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 06:50:18,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227886131] [2020-11-07 06:50:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 06:50:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:18,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 06:50:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 06:50:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 06:50:18,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227886131] [2020-11-07 06:50:18,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-07 06:50:18,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-07 06:50:18,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528933699] [2020-11-07 06:50:18,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 06:50:18,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 06:50:18,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 06:50:18,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-11-07 06:50:18,420 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 12 states. [2020-11-07 06:50:19,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 06:50:19,198 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-11-07 06:50:19,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 06:50:19,198 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 38 [2020-11-07 06:50:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 06:50:19,199 INFO L225 Difference]: With dead ends: 42 [2020-11-07 06:50:19,199 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 06:50:19,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2020-11-07 06:50:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 06:50:19,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 06:50:19,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 06:50:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 06:50:19,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-11-07 06:50:19,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 06:50:19,202 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 06:50:19,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 06:50:19,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 06:50:19,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 06:50:19,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 06:50:19,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 06:50:19,502 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2020-11-07 06:50:19,766 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2020-11-07 06:50:20,139 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,139 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,140 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,140 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,140 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,140 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,140 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:50:20,141 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,141 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 06:50:20,141 INFO L269 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,141 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,141 INFO L269 CegarLoopResult]: At program point L3-6(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,141 INFO L269 CegarLoopResult]: At program point L3-7(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,142 INFO L269 CegarLoopResult]: At program point L3-8(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,142 INFO L269 CegarLoopResult]: At program point L3-9(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,142 INFO L269 CegarLoopResult]: At program point L3-10(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,142 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-07 06:50:20,143 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,143 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 06:50:20,143 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:50:20,143 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 06:50:20,143 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 06:50:20,143 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 06:50:20,143 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 06:50:20,144 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 11 22) the Hoare annotation is: true [2020-11-07 06:50:20,144 INFO L262 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (<= main_~y~0 main_~z~0) (<= main_~z~0 main_~y~0) (= main_~x~0 main_~w~0)) [2020-11-07 06:50:20,144 INFO L262 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (and (<= main_~y~0 main_~z~0) (<= main_~z~0 |main_#t~post9|) (<= |main_#t~post9| main_~z~0) (<= main_~z~0 main_~y~0) (= main_~x~0 main_~w~0)) [2020-11-07 06:50:20,144 INFO L262 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 1))) (and (<= main_~y~0 .cse0) (<= .cse0 main_~y~0) (= main_~x~0 main_~w~0))) [2020-11-07 06:50:20,145 INFO L262 CegarLoopResult]: At program point L17-2(line 17) the Hoare annotation is: (let ((.cse0 (+ main_~z~0 1))) (and (<= .cse0 main_~y~0) (<= main_~y~0 .cse0) (<= main_~z~0 |main_#t~post9|) (<= |main_#t~post9| main_~z~0) (= main_~x~0 main_~w~0))) [2020-11-07 06:50:20,145 INFO L269 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-11-07 06:50:20,145 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 11 22) the Hoare annotation is: true [2020-11-07 06:50:20,145 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 11 22) the Hoare annotation is: true [2020-11-07 06:50:20,145 INFO L269 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-11-07 06:50:20,145 INFO L262 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 (+ main_~z~0 1))) (and (<= .cse0 main_~y~0) (<= main_~y~0 .cse0) (= main_~x~0 main_~w~0))) [2020-11-07 06:50:20,146 INFO L262 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (let ((.cse0 (+ main_~z~0 1)) (.cse1 (+ |main_#t~post10| 1))) (and (<= .cse0 main_~y~0) (<= main_~y~0 .cse0) (= main_~x~0 main_~w~0) (<= .cse1 main_~y~0) (<= main_~y~0 .cse1))) [2020-11-07 06:50:20,146 INFO L262 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (let ((.cse0 (+ |main_#t~post10| 1))) (and (<= main_~y~0 main_~z~0) (<= main_~z~0 main_~y~0) (= main_~x~0 main_~w~0) (<= .cse0 main_~y~0) (<= main_~y~0 .cse0))) [2020-11-07 06:50:20,146 INFO L262 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (let ((.cse3 (= main_~x~0 main_~w~0))) (or (let ((.cse5 (div main_~z~0 4294967296)) (.cse4 (div main_~y~0 4294967296))) (let ((.cse0 (+ main_~x~0 1)) (.cse2 (+ main_~z~0 (* 4294967296 .cse4))) (.cse1 (* 4294967296 .cse5))) (and (<= main_~y~0 .cse0) (<= (+ main_~y~0 .cse1) .cse2) (<= .cse0 main_~y~0) (< .cse2 (+ main_~y~0 .cse1 1)) .cse3 (< .cse4 (+ .cse5 1))))) (and (<= main_~y~0 main_~z~0) (<= main_~z~0 main_~y~0) .cse3))) [2020-11-07 06:50:20,147 INFO L262 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (= main_~x~0 main_~w~0) [2020-11-07 06:50:20,147 INFO L262 CegarLoopResult]: At program point L16-3(line 16) the Hoare annotation is: (and (<= main_~y~0 main_~z~0) (<= main_~z~0 main_~y~0) (= main_~x~0 main_~w~0)) [2020-11-07 06:50:20,147 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 06:50:20,147 INFO L262 CegarLoopResult]: At program point L16-4(lines 16 19) the Hoare annotation is: (and (<= main_~y~0 main_~z~0) (<= main_~z~0 main_~y~0) (= main_~x~0 main_~w~0)) [2020-11-07 06:50:20,147 INFO L262 CegarLoopResult]: At program point L16-5(lines 16 19) the Hoare annotation is: (let ((.cse3 (= main_~x~0 main_~w~0))) (or (let ((.cse5 (div main_~z~0 4294967296)) (.cse4 (div main_~y~0 4294967296))) (let ((.cse0 (+ main_~x~0 1)) (.cse2 (+ main_~z~0 (* 4294967296 .cse4))) (.cse1 (* 4294967296 .cse5))) (and (<= main_~y~0 .cse0) (<= (+ main_~y~0 .cse1) .cse2) (<= .cse0 main_~y~0) (< .cse2 (+ main_~y~0 .cse1 1)) .cse3 (< .cse4 (+ .cse5 1))))) (and (<= main_~y~0 main_~z~0) (<= main_~z~0 main_~y~0) .cse3))) [2020-11-07 06:50:20,148 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-11-07 06:50:20,148 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2020-11-07 06:50:20,148 INFO L262 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:50:20,148 INFO L262 CegarLoopResult]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 06:50:20,148 INFO L262 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 06:50:20,148 INFO L269 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-11-07 06:50:20,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:50:20 BoogieIcfgContainer [2020-11-07 06:50:20,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 06:50:20,172 INFO L168 Benchmark]: Toolchain (without parser) took 4691.51 ms. Allocated memory was 152.0 MB in the beginning and 196.1 MB in the end (delta: 44.0 MB). Free memory was 128.2 MB in the beginning and 95.0 MB in the end (delta: 33.3 MB). Peak memory consumption was 105.9 MB. Max. memory is 8.0 GB. [2020-11-07 06:50:20,173 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 152.0 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 06:50:20,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.23 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 118.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 06:50:20,175 INFO L168 Benchmark]: Boogie Preprocessor took 38.80 ms. Allocated memory is still 152.0 MB. Free memory was 118.3 MB in the beginning and 116.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 06:50:20,176 INFO L168 Benchmark]: RCFGBuilder took 392.88 ms. Allocated memory is still 152.0 MB. Free memory was 116.7 MB in the beginning and 102.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-07 06:50:20,177 INFO L168 Benchmark]: TraceAbstraction took 3970.16 ms. Allocated memory was 152.0 MB in the beginning and 196.1 MB in the end (delta: 44.0 MB). Free memory was 101.8 MB in the beginning and 95.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 79.7 MB. Max. memory is 8.0 GB. [2020-11-07 06:50:20,181 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 152.0 MB. Free memory is still 126.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.23 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 118.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.80 ms. Allocated memory is still 152.0 MB. Free memory was 118.3 MB in the beginning and 116.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 392.88 ms. Allocated memory is still 152.0 MB. Free memory was 116.7 MB in the beginning and 102.3 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3970.16 ms. Allocated memory was 152.0 MB in the beginning and 196.1 MB in the end (delta: 44.0 MB). Free memory was 101.8 MB in the beginning and 95.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 79.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 16]: Loop Invariant Derived loop invariant: (y <= z && z <= y) && x == w - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 106 SDtfs, 120 SDslu, 279 SDs, 0 SdLazy, 231 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 48 LocationsWithAnnotation, 68 PreInvPairs, 84 NumberOfFragments, 348 HoareAnnotationTreeSize, 68 FomulaSimplifications, 964 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 48 FomulaSimplificationsInter, 742 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 18400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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...