/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/test29-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:05:35,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:05:35,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:05:35,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:05:35,714 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 23:05:35,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:05:35,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:05:35,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:05:35,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:05:35,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:05:35,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:05:35,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:05:35,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:05:35,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:05:35,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:05:35,747 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:05:35,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:05:35,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:05:35,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:05:35,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:05:35,750 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:05:35,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:05:35,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:05:35,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:05:35,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:05:35,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:05:35,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:05:35,751 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:05:36,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:05:36,214 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:05:36,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:05:36,219 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:05:36,220 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:05:36,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c [2021-02-23 23:05:36,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb5e7e6fc/ba789f53762c46acb7ee633e598f1eac/FLAG81134444c [2021-02-23 23:05:36,996 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:05:36,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c [2021-02-23 23:05:37,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb5e7e6fc/ba789f53762c46acb7ee633e598f1eac/FLAG81134444c [2021-02-23 23:05:37,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb5e7e6fc/ba789f53762c46acb7ee633e598f1eac [2021-02-23 23:05:37,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:05:37,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:05:37,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:37,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:05:37,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:05:37,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:37" (1/1) ... [2021-02-23 23:05:37,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798eb749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:37, skipping insertion in model container [2021-02-23 23:05:37,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:05:37" (1/1) ... [2021-02-23 23:05:37,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:05:37,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:05:37,548 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/test29-2.c[580,593] [2021-02-23 23:05:37,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:37,565 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:05:37,585 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/test29-2.c[580,593] [2021-02-23 23:05:37,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:05:37,605 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:05:37,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:37 WrapperNode [2021-02-23 23:05:37,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:05:37,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:05:37,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:05:37,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:05:37,623 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:37" (1/1) ... [2021-02-23 23:05:37,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:37" (1/1) ... [2021-02-23 23:05:37,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:37" (1/1) ... [2021-02-23 23:05:37,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:37" (1/1) ... [2021-02-23 23:05:37,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:37" (1/1) ... [2021-02-23 23:05:37,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:37" (1/1) ... [2021-02-23 23:05:37,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:37" (1/1) ... [2021-02-23 23:05:37,649 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:05:37,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:05:37,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:05:37,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:05:37,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:37" (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 23:05:37,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:05:37,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:05:37,785 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:05:37,786 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:05:37,786 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:05:37,787 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:05:37,787 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:05:37,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:05:37,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 23:05:37,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:05:37,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:05:37,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:05:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:05:37,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:05:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:05:37,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:05:38,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:05:38,271 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 23:05:38,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:38 BoogieIcfgContainer [2021-02-23 23:05:38,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:05:38,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:05:38,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:05:38,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:05:38,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:05:37" (1/3) ... [2021-02-23 23:05:38,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4233684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:38, skipping insertion in model container [2021-02-23 23:05:38,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:05:37" (2/3) ... [2021-02-23 23:05:38,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4233684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:05:38, skipping insertion in model container [2021-02-23 23:05:38,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:05:38" (3/3) ... [2021-02-23 23:05:38,288 INFO L111 eAbstractionObserver]: Analyzing ICFG test29-2.c [2021-02-23 23:05:38,306 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:05:38,318 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:05:38,344 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:05:38,385 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:05:38,385 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:05:38,385 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:05:38,386 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:05:38,386 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:05:38,386 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:05:38,386 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:05:38,386 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:05:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-23 23:05:38,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-23 23:05:38,436 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:38,437 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] [2021-02-23 23:05:38,438 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:38,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:38,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1684913090, now seen corresponding path program 1 times [2021-02-23 23:05:38,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:38,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694633084] [2021-02-23 23:05:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:38,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:38,741 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:38,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,772 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:38,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:38,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:38,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:38,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:38,898 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 23:05:38,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694633084] [2021-02-23 23:05:38,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:38,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 23:05:38,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272783791] [2021-02-23 23:05:38,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 23:05:38,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:38,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 23:05:38,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 23:05:38,932 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 5 states. [2021-02-23 23:05:39,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:39,260 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2021-02-23 23:05:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 23:05:39,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-02-23 23:05:39,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:39,288 INFO L225 Difference]: With dead ends: 89 [2021-02-23 23:05:39,288 INFO L226 Difference]: Without dead ends: 46 [2021-02-23 23:05:39,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:05:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-02-23 23:05:39,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 37. [2021-02-23 23:05:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-02-23 23:05:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-02-23 23:05:39,368 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 29 [2021-02-23 23:05:39,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:39,369 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-02-23 23:05:39,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 23:05:39,369 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-02-23 23:05:39,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-23 23:05:39,373 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:39,373 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] [2021-02-23 23:05:39,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:05:39,374 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:39,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:39,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1911061662, now seen corresponding path program 1 times [2021-02-23 23:05:39,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:39,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884414227] [2021-02-23 23:05:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:39,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:39,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:05:39,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:39,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:39,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:39,504 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 23:05:39,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884414227] [2021-02-23 23:05:39,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:39,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 23:05:39,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668590282] [2021-02-23 23:05:39,507 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 23:05:39,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:39,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 23:05:39,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:05:39,509 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 4 states. [2021-02-23 23:05:39,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:39,620 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2021-02-23 23:05:39,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 23:05:39,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2021-02-23 23:05:39,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:39,623 INFO L225 Difference]: With dead ends: 42 [2021-02-23 23:05:39,623 INFO L226 Difference]: Without dead ends: 37 [2021-02-23 23:05:39,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 23:05:39,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-23 23:05:39,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-02-23 23:05:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-02-23 23:05:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-02-23 23:05:39,633 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 29 [2021-02-23 23:05:39,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:39,633 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-02-23 23:05:39,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 23:05:39,633 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-02-23 23:05:39,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-23 23:05:39,634 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:39,635 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] [2021-02-23 23:05:39,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:05:39,635 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:39,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:39,636 INFO L82 PathProgramCache]: Analyzing trace with hash -2041206465, now seen corresponding path program 1 times [2021-02-23 23:05:39,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:39,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578410025] [2021-02-23 23:05:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:39,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:39,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 23:05:39,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,705 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:05:39,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:05:39,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 23:05:39,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,743 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:05:39,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:05:39,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:39,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:39,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:39,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:39,843 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 23:05:39,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578410025] [2021-02-23 23:05:39,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:39,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 23:05:39,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913553680] [2021-02-23 23:05:39,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 23:05:39,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:39,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 23:05:39,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-02-23 23:05:39,849 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 9 states. [2021-02-23 23:05:40,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:40,097 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-02-23 23:05:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 23:05:40,097 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2021-02-23 23:05:40,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:40,099 INFO L225 Difference]: With dead ends: 46 [2021-02-23 23:05:40,099 INFO L226 Difference]: Without dead ends: 32 [2021-02-23 23:05:40,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-02-23 23:05:40,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-23 23:05:40,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-02-23 23:05:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-23 23:05:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2021-02-23 23:05:40,109 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 31 [2021-02-23 23:05:40,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:40,109 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2021-02-23 23:05:40,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 23:05:40,109 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2021-02-23 23:05:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-23 23:05:40,110 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:05:40,110 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] [2021-02-23 23:05:40,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 23:05:40,111 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:05:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:05:40,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1860060673, now seen corresponding path program 1 times [2021-02-23 23:05:40,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:05:40,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755283136] [2021-02-23 23:05:40,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:05:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:40,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:40,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,198 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:40,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:40,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 23:05:40,239 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 23:05:40,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:05:40,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 23:05:40,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:40,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:05:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:05:40,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:05:40,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:05:40,320 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 23:05:40,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1755283136] [2021-02-23 23:05:40,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:05:40,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 23:05:40,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303059302] [2021-02-23 23:05:40,322 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 23:05:40,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:05:40,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 23:05:40,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-23 23:05:40,323 INFO L87 Difference]: Start difference. First operand 32 states and 31 transitions. Second operand 9 states. [2021-02-23 23:05:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:05:40,459 INFO L93 Difference]: Finished difference Result 32 states and 31 transitions. [2021-02-23 23:05:40,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 23:05:40,459 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2021-02-23 23:05:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:05:40,460 INFO L225 Difference]: With dead ends: 32 [2021-02-23 23:05:40,460 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 23:05:40,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-02-23 23:05:40,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 23:05:40,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 23:05:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 23:05:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 23:05:40,462 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-02-23 23:05:40,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:05:40,462 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 23:05:40,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 23:05:40,462 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 23:05:40,463 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 23:05:40,463 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 23:05:40,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 23:05:40,811 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 23:05:40,811 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 23:05:40,812 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 23:05:40,812 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 23:05:40,812 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 23:05:40,812 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:40,812 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 23:05:40,813 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:40,813 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-23 23:05:40,813 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 23:05:40,813 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 23:05:40,814 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 23:05:40,815 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 23:05:40,817 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 23:05:40,817 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:05:40,818 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 23:05:40,818 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 23:05:40,818 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-23 23:05:40,818 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 13 31) the Hoare annotation is: true [2021-02-23 23:05:40,825 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 .cse1 (= |main_~#d1~0.base| main_~pd~0.base) (not |main_#t~short10|)) (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (= (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|) 0) .cse1))) [2021-02-23 23:05:40,825 INFO L185 CegarLoopUtils]: At program point L23-1(line 23) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (= (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|) 0) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-23 23:05:40,826 INFO L185 CegarLoopUtils]: At program point L23-2(line 23) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (= |main_#t~mem9| 0) (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (= (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|) 0) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-23 23:05:40,826 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (= |main_~#d1~0.offset| main_~pd~0.offset) (not (= |main_~#d1~0.base| |main_~#d2~0.base|)) (= |main_~#d1~0.base| main_~pd~0.base)) [2021-02-23 23:05:40,826 INFO L185 CegarLoopUtils]: At program point L23-4(lines 23 25) the Hoare annotation is: (not |main_#t~short10|) [2021-02-23 23:05:40,826 INFO L185 CegarLoopUtils]: At program point L23-5(line 23) the Hoare annotation is: false [2021-02-23 23:05:40,826 INFO L185 CegarLoopUtils]: At program point L23-6(line 23) the Hoare annotation is: false [2021-02-23 23:05:40,826 INFO L192 CegarLoopUtils]: At program point L23-7(line 23) the Hoare annotation is: true [2021-02-23 23:05:40,827 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (= (select |#valid| |main_~#d1~0.base|) 1) [2021-02-23 23:05:40,827 INFO L192 CegarLoopUtils]: At program point L23-8(line 23) the Hoare annotation is: true [2021-02-23 23:05:40,827 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-23 23:05:40,828 INFO L192 CegarLoopUtils]: At program point L15-2(line 15) the Hoare annotation is: true [2021-02-23 23:05:40,828 INFO L192 CegarLoopUtils]: At program point L15-3(line 15) the Hoare annotation is: true [2021-02-23 23:05:40,829 INFO L192 CegarLoopUtils]: At program point L15-4(line 15) the Hoare annotation is: true [2021-02-23 23:05:40,829 INFO L192 CegarLoopUtils]: At program point L15-5(line 15) the Hoare annotation is: true [2021-02-23 23:05:40,829 INFO L185 CegarLoopUtils]: At program point L15-6(line 15) the Hoare annotation is: false [2021-02-23 23:05:40,829 INFO L185 CegarLoopUtils]: At program point L15-7(line 15) the Hoare annotation is: false [2021-02-23 23:05:40,829 INFO L185 CegarLoopUtils]: At program point L15-8(line 15) the Hoare annotation is: false [2021-02-23 23:05:40,829 INFO L185 CegarLoopUtils]: At program point L15-9(line 15) the Hoare annotation is: false [2021-02-23 23:05:40,829 INFO L185 CegarLoopUtils]: At program point L24(lines 14 31) the Hoare annotation is: false [2021-02-23 23:05:40,830 INFO L185 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-23 23:05:40,830 INFO L185 CegarLoopUtils]: At program point L16-1(line 16) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-23 23:05:40,830 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: false [2021-02-23 23:05:40,831 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-23 23:05:40,832 INFO L185 CegarLoopUtils]: At program point L21-1(lines 18 22) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (= (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|) 0) .cse1) (and .cse0 .cse1 (= |main_~#d1~0.base| main_~pd~0.base)))) [2021-02-23 23:05:40,832 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-23 23:05:40,832 INFO L185 CegarLoopUtils]: At program point L17-1(line 17) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-23 23:05:40,832 INFO L185 CegarLoopUtils]: At program point L17-3(line 17) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2021-02-23 23:05:40,832 INFO L185 CegarLoopUtils]: At program point L17-4(line 17) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (= |main_#t~ite8.base| |main_~#d2~0.base|) (= |main_~#d2~0.offset| |main_#t~ite8.offset|) .cse1) (and (= |main_~#d1~0.offset| |main_#t~ite8.offset|) .cse0 (= |main_~#d1~0.base| |main_#t~ite8.base|) .cse1))) [2021-02-23 23:05:40,832 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 13 31) the Hoare annotation is: true [2021-02-23 23:05:40,833 INFO L185 CegarLoopUtils]: At program point L17-5(line 17) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (= |main_#t~ite8.base| |main_~#d2~0.base|) (= |main_~#d2~0.offset| |main_#t~ite8.offset|) .cse1) (and (= |main_~#d1~0.offset| |main_#t~ite8.offset|) .cse0 (= |main_~#d1~0.offset| main_~pd~0.offset) (= |main_~#d1~0.base| |main_#t~ite8.base|) .cse1 (= |main_~#d1~0.base| main_~pd~0.base)))) [2021-02-23 23:05:40,833 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) the Hoare annotation is: false [2021-02-23 23:05:40,833 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: false [2021-02-23 23:05:40,833 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 13 31) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-23 23:05:40,834 INFO L185 CegarLoopUtils]: At program point L18(lines 18 22) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (= |main_~#d1~0.offset| main_~pd~0.offset) .cse1 (= |main_~#d1~0.base| main_~pd~0.base)) (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) .cse1))) [2021-02-23 23:05:40,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:05:40 BoogieIcfgContainer [2021-02-23 23:05:40,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:05:40,856 INFO L168 Benchmark]: Toolchain (without parser) took 3503.94 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.8 MB in the beginning and 119.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 81.3 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:40,857 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:05:40,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:40,859 INFO L168 Benchmark]: Boogie Preprocessor took 42.49 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:40,862 INFO L168 Benchmark]: RCFGBuilder took 623.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 131.2 MB in the end (delta: -15.9 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:40,866 INFO L168 Benchmark]: TraceAbstraction took 2573.03 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 131.2 MB in the beginning and 119.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 83.7 MB. Max. memory is 8.0 GB. [2021-02-23 23:05:40,874 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 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 246.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 116.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.49 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 623.72 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 131.2 MB in the end (delta: -15.9 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2573.03 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 131.2 MB in the beginning and 119.9 MB in the end (delta: 11.3 MB). Peak memory consumption was 83.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 29]: 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: 14]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 79 SDslu, 293 SDs, 0 SdLazy, 248 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 51 LocationsWithAnnotation, 51 PreInvPairs, 79 NumberOfFragments, 405 HoareAnnotationTreeSize, 51 FomulaSimplifications, 29 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 51 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 10350 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...