/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/test_while_int.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:39:36,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:39:36,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:39:36,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 20:39:36,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:39:36,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:39:36,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:39:36,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:39:36,697 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:39:36,697 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:39:36,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:39:36,699 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:39:36,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:39:36,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:39:36,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:39:36,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:39:36,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:39:36,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:39:36,700 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:39:36,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:39:36,701 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:39:36,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:39:36,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:39:36,702 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:39:36,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:39:36,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:39:36,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:39:36,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:39:36,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:39:36,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:39:36,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:39:37,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:39:37,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:39:37,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:39:37,097 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:39:37,098 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:39:37,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.i [2021-02-21 20:39:37,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b02cc185/0c81d269cff84a40a2a7586e11bc9ce9/FLAG2f8ca3fa9 [2021-02-21 20:39:37,735 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:39:37,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.i [2021-02-21 20:39:37,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b02cc185/0c81d269cff84a40a2a7586e11bc9ce9/FLAG2f8ca3fa9 [2021-02-21 20:39:38,116 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b02cc185/0c81d269cff84a40a2a7586e11bc9ce9 [2021-02-21 20:39:38,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:39:38,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:39:38,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:39:38,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:39:38,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:39:38,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:39:38" (1/1) ... [2021-02-21 20:39:38,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62104f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:38, skipping insertion in model container [2021-02-21 20:39:38,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:39:38" (1/1) ... [2021-02-21 20:39:38,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:39:38,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:39:38,313 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/test_while_int.i[296,309] [2021-02-21 20:39:38,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:39:38,345 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:39:38,360 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/test_while_int.i[296,309] [2021-02-21 20:39:38,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:39:38,380 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:39:38,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:38 WrapperNode [2021-02-21 20:39:38,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:39:38,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:39:38,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:39:38,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:39:38,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:38" (1/1) ... [2021-02-21 20:39:38,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:38" (1/1) ... [2021-02-21 20:39:38,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:38" (1/1) ... [2021-02-21 20:39:38,406 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:38" (1/1) ... [2021-02-21 20:39:38,412 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:38" (1/1) ... [2021-02-21 20:39:38,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:38" (1/1) ... [2021-02-21 20:39:38,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:38" (1/1) ... [2021-02-21 20:39:38,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:39:38,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:39:38,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:39:38,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:39:38,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:38" (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 [2021-02-21 20:39:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:39:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:39:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:39:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-21 20:39:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure check_error [2021-02-21 20:39:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:39:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:39:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:39:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:39:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:39:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-21 20:39:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure check_error [2021-02-21 20:39:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:39:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:39:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:39:38,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:39:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:39:38,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:39:38,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:39:38,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:39:38,948 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 20:39:38,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:39:38 BoogieIcfgContainer [2021-02-21 20:39:38,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:39:38,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:39:38,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:39:38,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:39:38,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:39:38" (1/3) ... [2021-02-21 20:39:38,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c64bd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:39:38, skipping insertion in model container [2021-02-21 20:39:38,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:39:38" (2/3) ... [2021-02-21 20:39:38,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c64bd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:39:38, skipping insertion in model container [2021-02-21 20:39:38,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:39:38" (3/3) ... [2021-02-21 20:39:38,965 INFO L111 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2021-02-21 20:39:38,973 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:39:39,007 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:39:39,048 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:39:39,076 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:39:39,076 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:39:39,076 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:39:39,077 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:39:39,077 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:39:39,077 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:39:39,077 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:39:39,077 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:39:39,095 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-02-21 20:39:39,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 20:39:39,106 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:39:39,107 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] [2021-02-21 20:39:39,107 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:39:39,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:39:39,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1640950537, now seen corresponding path program 1 times [2021-02-21 20:39:39,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:39:39,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373279467] [2021-02-21 20:39:39,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:39:39,218 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:39:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:39:39,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:39,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:39:39,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:39,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:39:39,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:39,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:39:39,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:39,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:39:39,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:39,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:39:39,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:39,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:39:39,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:39,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:39:39,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:39:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:39:39,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:39,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:39:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:39:39,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373279467] [2021-02-21 20:39:39,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:39:39,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:39:39,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438459211] [2021-02-21 20:39:39,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:39:39,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:39:39,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:39:39,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:39:39,591 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 8 states. [2021-02-21 20:39:40,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:39:40,303 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-02-21 20:39:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:39:40,306 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2021-02-21 20:39:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:39:40,315 INFO L225 Difference]: With dead ends: 62 [2021-02-21 20:39:40,316 INFO L226 Difference]: Without dead ends: 37 [2021-02-21 20:39:40,319 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:39:40,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-21 20:39:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2021-02-21 20:39:40,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-02-21 20:39:40,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-02-21 20:39:40,372 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 22 [2021-02-21 20:39:40,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:39:40,372 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-02-21 20:39:40,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:39:40,373 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-02-21 20:39:40,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-21 20:39:40,374 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:39:40,374 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:39:40,375 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:39:40,375 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:39:40,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:39:40,376 INFO L82 PathProgramCache]: Analyzing trace with hash 394134961, now seen corresponding path program 1 times [2021-02-21 20:39:40,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:39:40,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646892300] [2021-02-21 20:39:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:39:42,535 WARN L141 QuantifierPusher]: treesize reduction 75, result has 40.5 percent of original size [2021-02-21 20:39:42,566 WARN L147 QuantifierPusher]: treesize reduction 75, result has 40.5 percent of original size 51 [2021-02-21 20:39:42,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,636 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-02-21 20:39:42,637 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 20:39:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:39:42,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:39:42,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:39:42,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:39:42,719 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-21 20:39:42,720 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-21 20:39:42,721 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-21 20:39:42,722 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-21 20:39:42,733 WARN L141 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-02-21 20:39:42,734 WARN L147 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size 7 [2021-02-21 20:39:42,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:39:42,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:39:42,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:39:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:39:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:39:42,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,815 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:39:42,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:39:42,823 WARN L141 QuantifierPusher]: treesize reduction 3, result has 92.9 percent of original size [2021-02-21 20:39:42,826 WARN L147 QuantifierPusher]: treesize reduction 3, result has 92.9 percent of original size 39 [2021-02-21 20:39:42,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:39:42,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-02-21 20:39:42,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-21 20:39:42,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:39:42,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 20:39:42,962 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:39:42,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:42,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:39:43,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:39:43,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:39:43,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:39:43,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:39:43,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:39:43,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:39:43,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:39:43,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:39:43,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 20:39:43,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:39:43,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:39:43,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-21 20:39:43,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:39:43,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:39:43,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-21 20:39:43,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:39:43,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 20:39:43,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-21 20:39:43,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:39:43,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:39:43,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646892300] [2021-02-21 20:39:43,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:39:43,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-21 20:39:43,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356115587] [2021-02-21 20:39:43,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 20:39:43,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:39:43,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 20:39:43,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-02-21 20:39:43,240 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 14 states. [2021-02-21 20:39:43,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:39:43,739 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-02-21 20:39:43,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-21 20:39:43,740 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2021-02-21 20:39:43,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:39:43,740 INFO L225 Difference]: With dead ends: 34 [2021-02-21 20:39:43,741 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 20:39:43,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2021-02-21 20:39:43,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 20:39:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 20:39:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 20:39:43,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 20:39:43,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-02-21 20:39:43,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:39:43,744 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 20:39:43,744 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 20:39:43,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 20:39:43,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 20:39:43,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:39:43,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 20:39:44,445 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 20:39:44,445 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 20:39:44,446 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 20:39:44,446 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-21 20:39:44,446 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-21 20:39:44,446 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:39:44,446 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-21 20:39:44,446 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 20:39:44,447 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-21 20:39:44,447 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|)) [2021-02-21 20:39:44,447 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-21 20:39:44,447 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-21 20:39:44,447 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:39:44,448 INFO L185 CegarLoopUtils]: At program point L20-3(lines 19 21) the Hoare annotation is: (or (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (not (= v_main_~i~0_BEFORE_CALL_1 3)) 1 0) |check_error_#in~b|)) (and (or (not (<= 2 v_main_~i~0_BEFORE_CALL_1)) (not (<= v_main_~i~0_BEFORE_CALL_1 2))) (not (= v_main_~i~0_BEFORE_CALL_1 1))))) (= |check_error_#in~b| check_error_~b)) [2021-02-21 20:39:44,448 INFO L192 CegarLoopUtils]: At program point check_errorENTRY(lines 19 21) the Hoare annotation is: true [2021-02-21 20:39:44,448 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (or (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (not (= v_main_~i~0_BEFORE_CALL_1 3)) 1 0) |check_error_#in~b|)) (and (or (not (<= 2 v_main_~i~0_BEFORE_CALL_1)) (not (<= v_main_~i~0_BEFORE_CALL_1 2))) (not (= v_main_~i~0_BEFORE_CALL_1 1))))) (= |check_error_#in~b| check_error_~b)) [2021-02-21 20:39:44,448 INFO L185 CegarLoopUtils]: At program point check_errorEXIT(lines 19 21) the Hoare annotation is: (or (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (not (= v_main_~i~0_BEFORE_CALL_1 3)) 1 0) |check_error_#in~b|)) (and (or (not (<= 2 v_main_~i~0_BEFORE_CALL_1)) (not (<= v_main_~i~0_BEFORE_CALL_1 2))) (not (= v_main_~i~0_BEFORE_CALL_1 1))))) (= |check_error_#in~b| check_error_~b)) [2021-02-21 20:39:44,448 INFO L185 CegarLoopUtils]: At program point L20-2(line 20) the Hoare annotation is: (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (not (= (ite (not (= v_main_~i~0_BEFORE_CALL_1 3)) 1 0) |check_error_#in~b|)) (and (or (not (<= 2 v_main_~i~0_BEFORE_CALL_1)) (not (<= v_main_~i~0_BEFORE_CALL_1 2))) (not (= v_main_~i~0_BEFORE_CALL_1 1))))) [2021-02-21 20:39:44,449 INFO L192 CegarLoopUtils]: At program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: true [2021-02-21 20:39:44,449 INFO L192 CegarLoopUtils]: At program point __blast_assertEXIT(lines 6 9) the Hoare annotation is: true [2021-02-21 20:39:44,449 INFO L192 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: true [2021-02-21 20:39:44,449 INFO L192 CegarLoopUtils]: At program point __blast_assertFINAL(lines 6 9) the Hoare annotation is: true [2021-02-21 20:39:44,449 INFO L192 CegarLoopUtils]: At program point __blast_assertENTRY(lines 6 9) the Hoare annotation is: true [2021-02-21 20:39:44,449 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:39:44,450 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:39:44,450 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 20:39:44,450 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 20:39:44,450 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (or (= main_~i~0 1) (and (<= 2 main_~i~0) (<= main_~i~0 2))) [2021-02-21 20:39:44,450 INFO L185 CegarLoopUtils]: At program point L31-1(lines 26 33) the Hoare annotation is: (or (= main_~i~0 0) (= main_~i~0 1) (and (<= 2 main_~i~0) (<= main_~i~0 2))) [2021-02-21 20:39:44,450 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2021-02-21 20:39:44,450 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (or (= main_~i~0 0) (= main_~i~0 1)) [2021-02-21 20:39:44,451 INFO L185 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: (let ((.cse0 (= |main_#t~post7| main_~i~0))) (or (and (= main_~i~0 0) .cse0) (and .cse0 (= main_~i~0 1)))) [2021-02-21 20:39:44,451 INFO L185 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: (and (= (+ |main_#t~post7| 1) main_~i~0) (or (= |main_#t~post7| 0) (and (<= |main_#t~post7| 1) (<= 1 |main_#t~post7|)))) [2021-02-21 20:39:44,451 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 35) the Hoare annotation is: true [2021-02-21 20:39:44,451 INFO L192 CegarLoopUtils]: At program point L26-2(lines 26 33) the Hoare annotation is: true [2021-02-21 20:39:44,451 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 35) the Hoare annotation is: true [2021-02-21 20:39:44,469 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 20:39:44,470 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 20:39:44,471 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 20:39:44,471 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 20:39:44,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:39:44 BoogieIcfgContainer [2021-02-21 20:39:44,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:39:44,475 INFO L168 Benchmark]: Toolchain (without parser) took 6351.60 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.4 MB in the beginning and 78.6 MB in the end (delta: 48.8 MB). Peak memory consumption was 94.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:39:44,476 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 124.9 MB in the end (delta: 120.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:39:44,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:39:44,478 INFO L168 Benchmark]: Boogie Preprocessor took 38.55 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:39:44,478 INFO L168 Benchmark]: RCFGBuilder took 531.57 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 102.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:39:44,479 INFO L168 Benchmark]: TraceAbstraction took 5516.71 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.4 MB in the beginning and 78.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 69.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:39:44,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 124.9 MB in the end (delta: 120.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 117.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.55 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 531.57 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 102.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5516.71 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.4 MB in the beginning and 78.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 69.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 26]: Loop Invariant Derived loop invariant: (i == 0 || i == 1) || (2 <= i && i <= 2) - ProcedureContractResult [Line: 19]: Procedure Contract for check_error [2021-02-21 20:39:44,493 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 20:39:44,493 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 20:39:44,493 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 20:39:44,493 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 20:39:44,494 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 20:39:44,494 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 20:39:44,494 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2021-02-21 20:39:44,495 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] Derived contract for procedure check_error: (forall v_main_~i~0_BEFORE_CALL_1 : int :: !((if !(v_main_~i~0_BEFORE_CALL_1 == 3) then 1 else 0) == \old(b)) || ((!(2 <= v_main_~i~0_BEFORE_CALL_1) || !(v_main_~i~0_BEFORE_CALL_1 <= 2)) && !(v_main_~i~0_BEFORE_CALL_1 == 1))) || \old(b) == b - ProcedureContractResult [Line: 6]: Procedure Contract for __blast_assert Derived contract for procedure __blast_assert: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 55 SDslu, 150 SDs, 0 SdLazy, 144 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=1, 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 33 LocationsWithAnnotation, 48 PreInvPairs, 67 NumberOfFragments, 234 HoareAnnotationTreeSize, 48 FomulaSimplifications, 331 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 33 FomulaSimplificationsInter, 1019 FormulaSimplificationTreeSizeReductionInter, 0.5s 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...