/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/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:05:24,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:05:24,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:05:24,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:05:24,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:05:24,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:05:24,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:05:24,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:05:24,766 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:05:24,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:05:24,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:05:24,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:05:24,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:05:24,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:05:24,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:05:24,768 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:05:24,769 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:05:24,769 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:05:24,769 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:05:24,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:05:24,770 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:05:24,770 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:05:24,770 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:05:24,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:05:24,771 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:05:24,771 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:05:24,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:05:24,771 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:05:25,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:05:25,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:05:25,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:05:25,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:05:25,318 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:05:25,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2021-02-23 23:05:25,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c96697ad/74295a5cb83444d29531ba696ce95ccd/FLAGefef49245 [2021-02-23 23:05:25,950 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:05:25,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c [2021-02-23 23:05:25,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c96697ad/74295a5cb83444d29531ba696ce95ccd/FLAGefef49245 [2021-02-23 23:05:26,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c96697ad/74295a5cb83444d29531ba696ce95ccd [2021-02-23 23:05:26,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:05:26,369 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:05:26,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:26,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:05:26,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:05:26,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:26" (1/1) ... [2021-02-23 23:05:26,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea3b298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:26, skipping insertion in model container [2021-02-23 23:05:26,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:26" (1/1) ... [2021-02-23 23:05:26,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:05:26,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:05:26,616 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c[704,717] [2021-02-23 23:05:26,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:26,633 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:05:26,667 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c[704,717] [2021-02-23 23:05:26,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:26,697 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:05:26,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:26 WrapperNode [2021-02-23 23:05:26,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:26,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:05:26,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:05:26,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:05:26,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:26" (1/1) ... [2021-02-23 23:05:26,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:26" (1/1) ... [2021-02-23 23:05:26,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:26" (1/1) ... [2021-02-23 23:05:26,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:26" (1/1) ... [2021-02-23 23:05:26,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:26" (1/1) ... [2021-02-23 23:05:26,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:26" (1/1) ... [2021-02-23 23:05:26,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:26" (1/1) ... [2021-02-23 23:05:26,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:05:26,774 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:05:26,774 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:05:26,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:05:26,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:05:26,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:05:26,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:05:26,902 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:05:26,902 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-02-23 23:05:26,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:05:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:05:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:05:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:05:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:05:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:05:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-23 23:05:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:05:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:05:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:05:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:05:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:05:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:05:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:05:27,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:05:27,448 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 23:05:27,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:27 BoogieIcfgContainer [2021-02-23 23:05:27,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:05:27,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:05:27,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:05:27,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:05:27,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:05:26" (1/3) ... [2021-02-23 23:05:27,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f0d340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:27, skipping insertion in model container [2021-02-23 23:05:27,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:26" (2/3) ... [2021-02-23 23:05:27,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f0d340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:27, skipping insertion in model container [2021-02-23 23:05:27,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:27" (3/3) ... [2021-02-23 23:05:27,466 INFO L111 eAbstractionObserver]: Analyzing ICFG test24-1.c [2021-02-23 23:05:27,475 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:05:27,482 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:05:27,504 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:05:27,545 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:05:27,545 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:05:27,546 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:05:27,546 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:05:27,546 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:05:27,546 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:05:27,546 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:05:27,547 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:05:27,572 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2021-02-23 23:05:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-23 23:05:27,584 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:27,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:27,585 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:27,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:27,595 INFO L82 PathProgramCache]: Analyzing trace with hash 48956364, now seen corresponding path program 1 times [2021-02-23 23:05:27,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:27,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243548985] [2021-02-23 23:05:27,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:27,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:27,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:27,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:27,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:28,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:28,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:28,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:28,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-02-23 23:05:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:28,118 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:28,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:28,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:28,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243548985] [2021-02-23 23:05:28,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:28,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 23:05:28,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406873224] [2021-02-23 23:05:28,145 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 23:05:28,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:28,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 23:05:28,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 23:05:28,162 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 3 states. [2021-02-23 23:05:28,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:28,304 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2021-02-23 23:05:28,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 23:05:28,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2021-02-23 23:05:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:28,316 INFO L225 Difference]: With dead ends: 79 [2021-02-23 23:05:28,317 INFO L226 Difference]: Without dead ends: 46 [2021-02-23 23:05:28,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 23:05:28,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-23 23:05:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-02-23 23:05:28,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-02-23 23:05:28,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-02-23 23:05:28,377 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 39 [2021-02-23 23:05:28,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:28,378 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-02-23 23:05:28,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 23:05:28,378 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-02-23 23:05:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-02-23 23:05:28,380 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:28,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 23:05:28,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:05:28,381 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:28,381 INFO L82 PathProgramCache]: Analyzing trace with hash 2070724129, now seen corresponding path program 1 times [2021-02-23 23:05:28,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:28,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649584374] [2021-02-23 23:05:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:28,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:28,523 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:28,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:28,534 WARN L141 QuantifierPusher]: treesize reduction 15, result has 31.8 percent of original size [2021-02-23 23:05:28,535 WARN L147 QuantifierPusher]: treesize reduction 15, result has 31.8 percent of original size 7 [2021-02-23 23:05:28,559 WARN L141 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size [2021-02-23 23:05:28,561 WARN L147 QuantifierPusher]: treesize reduction 15, result has 60.5 percent of original size 23 [2021-02-23 23:05:28,584 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:28,585 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:28,593 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:28,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 23:05:28,604 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:28,605 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:05:28,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:28,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:28,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:28,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:28,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:28,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 23:05:28,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:28,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:28,673 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:28,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649584374] [2021-02-23 23:05:28,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:28,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 23:05:28,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049554899] [2021-02-23 23:05:28,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 23:05:28,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:28,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 23:05:28,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:05:28,686 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 8 states. [2021-02-23 23:05:29,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:29,031 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2021-02-23 23:05:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 23:05:29,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2021-02-23 23:05:29,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:29,034 INFO L225 Difference]: With dead ends: 65 [2021-02-23 23:05:29,034 INFO L226 Difference]: Without dead ends: 51 [2021-02-23 23:05:29,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-02-23 23:05:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-23 23:05:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2021-02-23 23:05:29,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-23 23:05:29,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-02-23 23:05:29,050 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 41 [2021-02-23 23:05:29,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:29,050 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-02-23 23:05:29,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 23:05:29,051 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-02-23 23:05:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-23 23:05:29,052 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:29,053 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, 1, 1, 1] [2021-02-23 23:05:29,053 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:05:29,053 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:29,054 INFO L82 PathProgramCache]: Analyzing trace with hash -2025427239, now seen corresponding path program 1 times [2021-02-23 23:05:29,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:29,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679811919] [2021-02-23 23:05:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:29,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:29,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:29,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:05:29,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 23:05:29,279 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-23 23:05:29,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 23:05:29,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-02-23 23:05:29,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-02-23 23:05:29,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-23 23:05:29,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:05:29,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:29,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:29,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:29,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:29,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-02-23 23:05:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:29,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:29,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 23:05:29,649 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-23 23:05:29,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:29,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-23 23:05:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:05:29,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679811919] [2021-02-23 23:05:29,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-23 23:05:29,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-02-23 23:05:29,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487933495] [2021-02-23 23:05:29,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-23 23:05:29,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:29,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-23 23:05:29,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:05:29,725 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 16 states. [2021-02-23 23:05:30,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:30,470 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-02-23 23:05:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-23 23:05:30,471 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 47 [2021-02-23 23:05:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:30,476 INFO L225 Difference]: With dead ends: 48 [2021-02-23 23:05:30,476 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 23:05:30,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-02-23 23:05:30,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 23:05:30,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 23:05:30,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 23:05:30,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 23:05:30,480 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2021-02-23 23:05:30,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:30,480 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 23:05:30,481 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2021-02-23 23:05:30,481 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 23:05:30,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 23:05:30,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:05:30,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 23:05:31,197 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 23:05:31,197 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 23:05:31,197 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 23:05:31,198 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 23:05:31,198 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 23:05:31,198 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:31,198 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 23:05:31,198 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:31,198 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-23 23:05:31,199 INFO L185 CegarLoopUtils]: 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|)) [2021-02-23 23:05:31,199 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 23:05:31,199 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 23:05:31,199 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 23:05:31,199 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 23:05:31,200 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:31,200 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 23:05:31,200 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 23:05:31,200 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= 1 |main_#t~ret12|) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) [2021-02-23 23:05:31,200 INFO L185 CegarLoopUtils]: At program point L31-1(lines 31 33) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (<= 1 |main_#t~ret12|) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) [2021-02-23 23:05:31,200 INFO L185 CegarLoopUtils]: At program point L31-2(line 31) the Hoare annotation is: false [2021-02-23 23:05:31,201 INFO L192 CegarLoopUtils]: At program point L31-3(line 31) the Hoare annotation is: true [2021-02-23 23:05:31,201 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (and (= (+ (* main_~i~0 8) main_~ad2~0.offset) main_~pa~0.offset) (= |main_~#ad1~0.offset| 0) (= main_~pa~0.base main_~ad2~0.base) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) [2021-02-23 23:05:31,201 INFO L185 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= (+ (* main_~i~0 8) main_~ad2~0.offset) main_~pa~0.offset) (= |main_#t~mem9| .cse0) (= |main_~#ad1~0.offset| 0) (= main_~pa~0.base main_~ad2~0.base) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= main_~i~0 .cse0))) [2021-02-23 23:05:31,201 INFO L185 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_#t~mem9| .cse0) (= |main_~#ad1~0.offset| 0) (<= (+ main_~i~0 10) .cse0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2021-02-23 23:05:31,202 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 16 40) the Hoare annotation is: true [2021-02-23 23:05:31,202 INFO L185 CegarLoopUtils]: At program point L23(lines 23 34) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2021-02-23 23:05:31,202 INFO L192 CegarLoopUtils]: At program point L23-2(lines 23 34) the Hoare annotation is: true [2021-02-23 23:05:31,202 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2021-02-23 23:05:31,202 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2021-02-23 23:05:31,202 INFO L185 CegarLoopUtils]: At program point L32(lines 17 40) the Hoare annotation is: false [2021-02-23 23:05:31,202 INFO L185 CegarLoopUtils]: At program point L28-1(lines 28 30) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_#t~mem10| (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* |main_#t~mem10| 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= |main_#t~mem10| .cse0))) [2021-02-23 23:05:31,203 INFO L185 CegarLoopUtils]: At program point L28-2(line 28) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_#t~mem10| (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* |main_#t~mem10| 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= |main_#t~mem10| .cse0) (= main_~i~0 .cse0))) [2021-02-23 23:05:31,203 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2021-02-23 23:05:31,203 INFO L185 CegarLoopUtils]: At program point L28-4(line 28) the Hoare annotation is: (and (= |main_#t~mem10| (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* |main_#t~mem10| 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| 0) (<= (+ main_~i~0 1) |main_#t~mem10|) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= |main_#t~mem10| (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) [2021-02-23 23:05:31,203 INFO L185 CegarLoopUtils]: At program point L28-5(lines 28 30) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2021-02-23 23:05:31,204 INFO L185 CegarLoopUtils]: At program point L28-6(lines 28 30) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) [2021-02-23 23:05:31,204 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= (+ main_~i~0 1) .cse0) (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2021-02-23 23:05:31,204 INFO L185 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (<= (+ main_~i~0 1) .cse0) (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2021-02-23 23:05:31,204 INFO L185 CegarLoopUtils]: At program point L29-2(line 29) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (and (= |main_~#ad1~0.offset| 0) (<= (* 8 main_~i~0) (* 8 .cse0)) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base) (= (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* .cse0 8) |main_~#ad1~0.offset|)) .cse0))) [2021-02-23 23:05:31,205 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base)) [2021-02-23 23:05:31,205 INFO L185 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|))) (= |main_~#ad1~0.offset| main_~ad2~0.offset) (= |main_~#ad1~0.base| main_~ad2~0.base)) [2021-02-23 23:05:31,205 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2021-02-23 23:05:31,205 INFO L185 CegarLoopUtils]: At program point L21-1(line 21) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2021-02-23 23:05:31,205 INFO L185 CegarLoopUtils]: At program point L21-2(line 21) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2021-02-23 23:05:31,205 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 16 40) the Hoare annotation is: true [2021-02-23 23:05:31,206 INFO L185 CegarLoopUtils]: At program point L38(line 38) the Hoare annotation is: false [2021-02-23 23:05:31,206 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 38) the Hoare annotation is: false [2021-02-23 23:05:31,206 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 16 40) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-23 23:05:31,206 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (= |main_~#ad1~0.offset| 0) [2021-02-23 23:05:31,206 INFO L192 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: true [2021-02-23 23:05:31,206 INFO L192 CegarLoopUtils]: At program point L18-2(line 18) the Hoare annotation is: true [2021-02-23 23:05:31,207 INFO L185 CegarLoopUtils]: At program point L18-3(line 18) the Hoare annotation is: false [2021-02-23 23:05:31,207 INFO L185 CegarLoopUtils]: At program point L18-4(line 18) the Hoare annotation is: false [2021-02-23 23:05:31,207 INFO L185 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: false [2021-02-23 23:05:31,207 INFO L192 CegarLoopUtils]: At program point checkENTRY(lines 11 14) the Hoare annotation is: true [2021-02-23 23:05:31,207 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (= |check_#in~b| check_~b)) [2021-02-23 23:05:31,207 INFO L185 CegarLoopUtils]: At program point L13-1(line 13) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (= |check_#t~mem7| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* check_~b 8)))) (= |check_#in~b| check_~b)) [2021-02-23 23:05:31,208 INFO L185 CegarLoopUtils]: At program point L11(lines 11 14) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|)) [2021-02-23 23:05:31,208 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |check_#in~ad1.base|))) (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (or (not (= |check_#in~b| (select .cse0 (+ |check_#in~ad1.offset| (* |check_#in~b| 8))))) (<= 1 |check_#res|)) (= |check_#t~mem7| (select .cse0 (+ |check_#in~ad1.offset| (* check_~b 8)))) (= |check_#in~b| check_~b))) [2021-02-23 23:05:31,208 INFO L185 CegarLoopUtils]: At program point checkFINAL(lines 11 14) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (or (not (= |check_#in~b| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* |check_#in~b| 8))))) (<= 1 |check_#res|)) (= |check_#in~b| check_~b)) [2021-02-23 23:05:31,208 INFO L185 CegarLoopUtils]: At program point checkEXIT(lines 11 14) the Hoare annotation is: (and (= check_~ad1.offset |check_#in~ad1.offset|) (= check_~ad1.base |check_#in~ad1.base|) (or (not (= |check_#in~b| (select (select |#memory_int| |check_#in~ad1.base|) (+ |check_#in~ad1.offset| (* |check_#in~b| 8))))) (<= 1 |check_#res|)) (= |check_#in~b| check_~b)) [2021-02-23 23:05:31,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:05:31 BoogieIcfgContainer [2021-02-23 23:05:31,242 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:05:31,244 INFO L168 Benchmark]: Toolchain (without parser) took 4886.05 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 127.7 MB in the beginning and 155.9 MB in the end (delta: -28.2 MB). Peak memory consumption was 100.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:31,245 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:05:31,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.67 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:31,246 INFO L168 Benchmark]: Boogie Preprocessor took 71.74 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:31,249 INFO L168 Benchmark]: RCFGBuilder took 679.59 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 129.3 MB in the end (delta: -14.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:31,250 INFO L168 Benchmark]: TraceAbstraction took 3785.89 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 128.7 MB in the beginning and 155.9 MB in the end (delta: -27.2 MB). Peak memory consumption was 100.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:31,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 323.67 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 116.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 71.74 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 679.59 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 129.3 MB in the end (delta: -14.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3785.89 ms. Allocated memory was 151.0 MB in the beginning and 183.5 MB in the end (delta: 32.5 MB). Free memory was 128.7 MB in the beginning and 155.9 MB in the end (delta: -27.2 MB). Peak memory consumption was 100.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 38]: 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 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((ad1 == 0 && 8 * i <= 8 * unknown-#memory_int-unknown[pa][pa]) && ad1 == ad2) && ad1 == ad2) && unknown-#memory_int-unknown[ad1][unknown-#memory_int-unknown[pa][pa] * 8 + ad1] == unknown-#memory_int-unknown[pa][pa] - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 11]: Procedure Contract for check Derived contract for procedure check: ((ad1 == ad1 && ad1 == ad1) && (!(\old(b) == unknown-#memory_int-unknown[ad1][ad1 + \old(b) * 8]) || 1 <= \result)) && \old(b) == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 120 SDtfs, 71 SDslu, 322 SDs, 0 SdLazy, 426 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 58 LocationsWithAnnotation, 72 PreInvPairs, 86 NumberOfFragments, 706 HoareAnnotationTreeSize, 72 FomulaSimplifications, 59 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 58 FomulaSimplificationsInter, 347 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 32816 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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...