/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:52:31,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:52:31,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:52:31,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:52:32,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:52:32,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:52:32,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:52:32,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:52:32,104 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:52:32,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:52:32,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:52:32,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:52:32,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:52:32,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:52:32,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:52:32,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:52:32,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:52:32,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:52:32,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:52:32,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:52:32,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:52:32,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:52:32,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:52:32,112 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:52:32,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:52:32,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:52:32,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:52:32,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:52:32,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:52:32,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:52:32,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:52:32,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:52:32,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:52:32,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:52:32,585 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:52:32,586 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:52:32,587 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test09.c [2020-11-07 00:52:32,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32be60446/674c40d577124c40bfebb6cbd3b10d57/FLAG4ea9be16a [2020-11-07 00:52:33,308 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:52:33,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test09.c [2020-11-07 00:52:33,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32be60446/674c40d577124c40bfebb6cbd3b10d57/FLAG4ea9be16a [2020-11-07 00:52:33,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32be60446/674c40d577124c40bfebb6cbd3b10d57 [2020-11-07 00:52:33,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:52:33,698 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:52:33,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:52:33,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:52:33,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:52:33,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:33" (1/1) ... [2020-11-07 00:52:33,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a1ea5f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:33, skipping insertion in model container [2020-11-07 00:52:33,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:33" (1/1) ... [2020-11-07 00:52:33,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:52:33,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:52:33,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:52:33,903 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:52:33,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:52:33,940 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:52:33,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:33 WrapperNode [2020-11-07 00:52:33,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:52:33,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:52:33,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:52:33,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:52:33,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:33" (1/1) ... [2020-11-07 00:52:33,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:33" (1/1) ... [2020-11-07 00:52:33,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:33" (1/1) ... [2020-11-07 00:52:33,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:33" (1/1) ... [2020-11-07 00:52:33,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:33" (1/1) ... [2020-11-07 00:52:33,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:33" (1/1) ... [2020-11-07 00:52:33,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:33" (1/1) ... [2020-11-07 00:52:33,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:52:33,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:52:33,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:52:33,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:52:33,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:52:34,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:52:34,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:52:34,065 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:52:34,065 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-11-07 00:52:34,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:52:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:52:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:52:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:52:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:52:34,066 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-11-07 00:52:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:52:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:52:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:52:34,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:52:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:52:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:52:34,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:52:34,470 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:52:34,471 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 00:52:34,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:34 BoogieIcfgContainer [2020-11-07 00:52:34,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:52:34,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:52:34,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:52:34,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:52:34,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:33" (1/3) ... [2020-11-07 00:52:34,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bb0617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:34, skipping insertion in model container [2020-11-07 00:52:34,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:33" (2/3) ... [2020-11-07 00:52:34,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bb0617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:34, skipping insertion in model container [2020-11-07 00:52:34,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:34" (3/3) ... [2020-11-07 00:52:34,515 INFO L111 eAbstractionObserver]: Analyzing ICFG test09.c [2020-11-07 00:52:34,535 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:52:34,540 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:52:34,556 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:52:34,600 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:52:34,600 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:52:34,602 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:52:34,602 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:52:34,602 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:52:34,602 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:52:34,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:52:34,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:52:34,629 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-11-07 00:52:34,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-07 00:52:34,645 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:52:34,647 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, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:52:34,647 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:52:34,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:52:34,658 INFO L82 PathProgramCache]: Analyzing trace with hash -933799014, now seen corresponding path program 1 times [2020-11-07 00:52:34,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:52:34,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356345135] [2020-11-07 00:52:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:52:34,770 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:52:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:35,362 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2020-11-07 00:52:35,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:52:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:35,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 00:52:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:52:35,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356345135] [2020-11-07 00:52:35,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:52:35,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-11-07 00:52:35,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649324058] [2020-11-07 00:52:35,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 00:52:35,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:52:35,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 00:52:35,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-11-07 00:52:35,850 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 15 states. [2020-11-07 00:52:36,469 WARN L194 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-11-07 00:52:36,676 WARN L194 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-07 00:52:36,894 WARN L194 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-11-07 00:52:37,240 WARN L194 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2020-11-07 00:52:37,552 WARN L194 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2020-11-07 00:52:37,797 WARN L194 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-11-07 00:52:38,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:52:38,046 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-11-07 00:52:38,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 00:52:38,049 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-11-07 00:52:38,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:52:38,059 INFO L225 Difference]: With dead ends: 79 [2020-11-07 00:52:38,059 INFO L226 Difference]: Without dead ends: 50 [2020-11-07 00:52:38,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2020-11-07 00:52:38,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-07 00:52:38,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-11-07 00:52:38,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-07 00:52:38,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 49 transitions. [2020-11-07 00:52:38,113 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 49 transitions. Word has length 48 [2020-11-07 00:52:38,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:52:38,113 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 49 transitions. [2020-11-07 00:52:38,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 00:52:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 49 transitions. [2020-11-07 00:52:38,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 00:52:38,116 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:52:38,116 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:52:38,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:52:38,116 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:52:38,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:52:38,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1785220583, now seen corresponding path program 1 times [2020-11-07 00:52:38,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:52:38,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565012717] [2020-11-07 00:52:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:52:38,122 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:52:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:38,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:52:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:38,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 00:52:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:52:38,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:52:38,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565012717] [2020-11-07 00:52:38,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:52:38,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 00:52:38,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157049437] [2020-11-07 00:52:38,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 00:52:38,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:52:38,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 00:52:38,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-07 00:52:38,297 INFO L87 Difference]: Start difference. First operand 50 states and 49 transitions. Second operand 7 states. [2020-11-07 00:52:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:52:38,538 INFO L93 Difference]: Finished difference Result 50 states and 49 transitions. [2020-11-07 00:52:38,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-07 00:52:38,538 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2020-11-07 00:52:38,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:52:38,539 INFO L225 Difference]: With dead ends: 50 [2020-11-07 00:52:38,540 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 00:52:38,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-07 00:52:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 00:52:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 00:52:38,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 00:52:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 00:52:38,542 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2020-11-07 00:52:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:52:38,543 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 00:52:38,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 00:52:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 00:52:38,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 00:52:38,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:52:38,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 00:52:38,991 WARN L194 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-11-07 00:52:39,224 WARN L194 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-11-07 00:52:39,626 WARN L194 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-11-07 00:52:40,230 WARN L194 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 41 [2020-11-07 00:52:40,449 WARN L194 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2020-11-07 00:52:40,656 WARN L194 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2020-11-07 00:52:40,853 WARN L194 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-11-07 00:52:41,031 WARN L194 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-11-07 00:52:41,212 WARN L194 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-11-07 00:52:41,302 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 00:52:41,302 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 00:52:41,302 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 00:52:41,303 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 00:52:41,303 INFO L262 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-11-07 00:52:41,303 INFO L262 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-11-07 00:52:41,303 INFO L262 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-11-07 00:52:41,304 INFO L262 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-11-07 00:52:41,304 INFO L262 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-11-07 00:52:41,304 INFO L262 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-11-07 00:52:41,304 INFO L262 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 00:52:41,304 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= ~p2~0.offset |old(~p2~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= ~p1~0.offset |old(~p1~0.offset)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~p2~0.base |old(~p2~0.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~p1~0.base |old(~p1~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-11-07 00:52:41,305 INFO L262 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 00:52:41,305 INFO L262 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-11-07 00:52:41,305 INFO L262 CegarLoopResult]: At program point L6-1(line 6) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-11-07 00:52:41,305 INFO L262 CegarLoopResult]: At program point L6-2(line 6) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 00:52:41,306 INFO L262 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-11-07 00:52:41,306 INFO L262 CegarLoopResult]: At program point L6-3(line 6) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 00:52:41,306 INFO L262 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: (and (= ~p1~0.offset |old(~p1~0.offset)|) (= ~p1~0.base |old(~p1~0.base)|)) [2020-11-07 00:52:41,306 INFO L262 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 00:52:41,306 INFO L262 CegarLoopResult]: At program point fFINAL(lines 9 17) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= ~p2~0.offset |~#b~0.offset|)) (and (<= 1 f_~v~0) (<= f_~v~0 1) (= ~p2~0.base ~p1~0.base) (= ~p2~0.offset ~p1~0.offset)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#b~0.base| ~p2~0.base)) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1))) [2020-11-07 00:52:41,307 INFO L262 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (or (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#a~0.offset| |old(~p1~0.offset)|)) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1)) (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1)) (not (= ~p2~0.base |~#b~0.base|))) [2020-11-07 00:52:41,307 INFO L262 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= ~p2~0.offset |~#b~0.offset|)) (and (<= 1 f_~v~0) (<= f_~v~0 1) (= ~p2~0.base ~p1~0.base) (= ~p2~0.offset ~p1~0.offset)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#b~0.base| ~p2~0.base)) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1))) [2020-11-07 00:52:41,307 INFO L262 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= ~p2~0.offset |~#b~0.offset|)) (and (<= 1 f_~v~0) (<= f_~v~0 1) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#b~0.base| ~p2~0.base)) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1))) [2020-11-07 00:52:41,307 INFO L262 CegarLoopResult]: At program point L11(lines 11 16) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= ~p2~0.offset |~#b~0.offset|)) (and (<= 1 f_~v~0) (<= f_~v~0 1) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#b~0.base| ~p2~0.base)) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1))) [2020-11-07 00:52:41,308 INFO L262 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= ~p2~0.offset |~#b~0.offset|)) (and (= |f_#t~mem7| (select (select |#memory_int| |old(~p1~0.base)|) |old(~p1~0.offset)|)) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#b~0.base| ~p2~0.base)) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1))) [2020-11-07 00:52:41,308 INFO L262 CegarLoopResult]: At program point L10-1(line 10) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#b~0.base| ~p2~0.base)) (and (= |f_#t~mem7| (select (select |#memory_int| |old(~p1~0.base)|) |old(~p1~0.offset)|)) (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) |f_#t~mem8|) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base)) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1))) [2020-11-07 00:52:41,308 INFO L262 CegarLoopResult]: At program point L10-2(line 10) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= ~p2~0.offset |~#b~0.offset|)) (and (= |f_#t~mem7| (select (select |#memory_int| |old(~p1~0.base)|) |old(~p1~0.offset)|)) (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) |f_#t~mem8|) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (= |f_#t~mem9| |f_#t~mem7|)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#b~0.base| ~p2~0.base)) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1))) [2020-11-07 00:52:41,308 INFO L262 CegarLoopResult]: At program point fEXIT(lines 9 17) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= ~p2~0.offset |~#b~0.offset|)) (and (<= 1 f_~v~0) (<= f_~v~0 1) (= ~p2~0.base ~p1~0.base) (= ~p2~0.offset ~p1~0.offset)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#b~0.base| ~p2~0.base)) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1))) [2020-11-07 00:52:41,309 INFO L262 CegarLoopResult]: At program point L10-3(line 10) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= ~p2~0.offset |~#b~0.offset|)) (and (<= 1 f_~v~0) (= |f_#t~mem7| (select (select |#memory_int| |old(~p1~0.base)|) |old(~p1~0.offset)|)) (<= f_~v~0 1) (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) |f_#t~mem8|) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (= |f_#t~mem9| |f_#t~mem7|)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#b~0.base| ~p2~0.base)) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1))) [2020-11-07 00:52:41,309 INFO L262 CegarLoopResult]: At program point L10-4(line 10) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= ~p2~0.offset |~#b~0.offset|)) (and (<= 1 f_~v~0) (<= f_~v~0 1) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#b~0.base| ~p2~0.base)) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1))) [2020-11-07 00:52:41,309 INFO L262 CegarLoopResult]: At program point fENTRY(lines 9 17) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= ~p2~0.offset |~#b~0.offset|)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#b~0.base| ~p2~0.base)) (and (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base)) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1))) [2020-11-07 00:52:41,309 INFO L262 CegarLoopResult]: At program point L10-5(line 10) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= ~p2~0.offset |~#b~0.offset|)) (and (<= 1 f_~v~0) (<= f_~v~0 1) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (not (= |~#b~0.base| ~p2~0.base)) (= |~#b~0.base| |~#a~0.base|) (not (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1))) [2020-11-07 00:52:41,309 INFO L262 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 00:52:41,310 INFO L262 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 00:52:41,310 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 00:52:41,310 INFO L262 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (and (= (select |#valid| |~#a~0.base|) 1) (not (= |~#b~0.base| |~#a~0.base|))) [2020-11-07 00:52:41,310 INFO L262 CegarLoopResult]: At program point L33(lines 33 35) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (= |~#b~0.base| |~#a~0.base|) (and (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1000) (= ~p2~0.base ~p1~0.base) (= |main_#t~mem13| 1000) (= ~p2~0.offset ~p1~0.offset))) [2020-11-07 00:52:41,310 INFO L262 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1))) [2020-11-07 00:52:41,310 INFO L262 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.base ~p1~0.base) (= ~p2~0.offset ~p1~0.offset)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,310 INFO L269 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: true [2020-11-07 00:52:41,310 INFO L262 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1000) (= ~p2~0.base ~p1~0.base) (= ~p2~0.offset ~p1~0.offset)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,311 INFO L262 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.offset |~#b~0.offset|) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1) (= ~p1~0.offset |~#a~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,311 INFO L262 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.base ~p1~0.base) (= ~p2~0.offset ~p1~0.offset)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,311 INFO L262 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.offset |~#b~0.offset|) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1) (= ~p1~0.offset |~#a~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,311 INFO L262 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.base ~p1~0.base) (= ~p2~0.offset ~p1~0.offset)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,311 INFO L262 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.offset |~#b~0.offset|) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1) (= ~p1~0.offset |~#a~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,311 INFO L262 CegarLoopResult]: At program point L29-3(line 29) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.base ~p1~0.base) (= ~p2~0.offset ~p1~0.offset)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,311 INFO L262 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.offset |~#b~0.offset|) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1) (= ~p1~0.offset |~#a~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,312 INFO L262 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.offset |~#b~0.offset|) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1) (= ~p1~0.offset |~#a~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,312 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 19 41) the Hoare annotation is: true [2020-11-07 00:52:41,312 INFO L262 CegarLoopResult]: At program point L27-3(line 27) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.offset |~#b~0.offset|) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1) (= ~p1~0.offset |~#a~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,312 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 19 41) the Hoare annotation is: true [2020-11-07 00:52:41,312 INFO L262 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1))) [2020-11-07 00:52:41,312 INFO L262 CegarLoopResult]: At program point L34(lines 19 41) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1))) [2020-11-07 00:52:41,312 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 19 41) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.base |old(~p2~0.base)|) (= |old(~p2~0.offset)| ~p2~0.offset) (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,313 INFO L262 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.offset |~#b~0.offset|) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= ~p1~0.offset |~#a~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,313 INFO L262 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= ~p2~0.offset |~#b~0.offset|) (= |~#a~0.base| ~p1~0.base) (= |~#b~0.base| ~p2~0.base) (= (select (select (store |#memory_int| |~#a~0.base| (store (select |#memory_int| |~#a~0.base|) |~#a~0.offset| 5)) ~p2~0.base) ~p2~0.offset) 1) (= ~p1~0.offset |~#a~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,313 INFO L262 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (or (not (= (select |#valid| |~#a~0.base|) 1)) (and (= |~#a~0.base| ~p1~0.base) (= ~p1~0.offset |~#a~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2020-11-07 00:52:41,313 INFO L262 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= (select |#valid| |~#a~0.base|) 1))) [2020-11-07 00:52:41,313 INFO L269 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-11-07 00:52:41,334 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 00:52:41,337 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 00:52:41,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:52:41 BoogieIcfgContainer [2020-11-07 00:52:41,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:52:41,347 INFO L168 Benchmark]: Toolchain (without parser) took 7652.15 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 128.0 MB in the beginning and 177.5 MB in the end (delta: -49.6 MB). Peak memory consumption was 121.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:41,348 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:52:41,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.46 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 117.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:41,352 INFO L168 Benchmark]: Boogie Preprocessor took 36.40 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:41,353 INFO L168 Benchmark]: RCFGBuilder took 494.13 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 99.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:41,355 INFO L168 Benchmark]: TraceAbstraction took 6862.76 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 98.8 MB in the beginning and 177.5 MB in the end (delta: -78.7 MB). Peak memory consumption was 92.8 MB. Max. memory is 8.0 GB. [2020-11-07 00:52:41,364 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 125.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 241.46 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 117.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.40 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 494.13 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 99.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6862.76 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 98.8 MB in the beginning and 177.5 MB in the end (delta: -78.7 MB). Peak memory consumption was 92.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: a == b || !(\valid[a] == 1) - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for f [2020-11-07 00:52:41,381 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 00:52:41,382 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 00:52:41,385 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-07 00:52:41,386 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure f: ((((((!(\valid[a] == 1) || !(\old(p1) == a)) || !(p2 == b)) || (((1 <= v && v <= 1) && p2 == p1) && p2 == p1)) || !(\old(p1) == a)) || !(b == p2)) || b == a) || !(unknown-#memory_int-unknown[a := unknown-#memory_int-unknown[a][a := 5]][p2][p2] == 1) - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 153 SDslu, 272 SDs, 0 SdLazy, 340 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 61 LocationsWithAnnotation, 65 PreInvPairs, 79 NumberOfFragments, 1457 HoareAnnotationTreeSize, 65 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 61 FomulaSimplificationsInter, 1342 FormulaSimplificationTreeSizeReductionInter, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...