/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:44:21,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:44:21,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:44:21,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 18:44:21,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:44:21,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:44:21,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:44:21,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:44:21,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:44:21,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:44:21,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:44:21,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:44:21,473 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:44:21,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:44:21,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:44:21,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:44:21,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:44:21,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:44:21,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:44:21,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:44:21,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:44:21,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:44:21,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:44:21,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:44:21,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:44:21,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:44:21,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:44:21,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:44:21,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:44:21,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:44:21,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:44:21,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:44:21,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:44:21,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:44:21,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:44:21,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:44:21,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:44:21,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:44:21,948 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:44:21,978 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:44:21,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:44:21,983 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:44:21,984 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:44:21,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-10-23 18:44:22,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da4f6b39/11b75498510848b783772e7409a96a54/FLAG48fabb88c [2020-10-23 18:44:22,754 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:44:22,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2020-10-23 18:44:22,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da4f6b39/11b75498510848b783772e7409a96a54/FLAG48fabb88c [2020-10-23 18:44:23,070 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6da4f6b39/11b75498510848b783772e7409a96a54 [2020-10-23 18:44:23,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:44:23,083 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:44:23,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:23,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:44:23,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:44:23,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:23" (1/1) ... [2020-10-23 18:44:23,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dbd519a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:23, skipping insertion in model container [2020-10-23 18:44:23,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:23" (1/1) ... [2020-10-23 18:44:23,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:44:23,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:44:23,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:23,362 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:44:23,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:23,401 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:44:23,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:23 WrapperNode [2020-10-23 18:44:23,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:23,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:44:23,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:44:23,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:44:23,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:23" (1/1) ... [2020-10-23 18:44:23,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:23" (1/1) ... [2020-10-23 18:44:23,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:23" (1/1) ... [2020-10-23 18:44:23,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:23" (1/1) ... [2020-10-23 18:44:23,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:23" (1/1) ... [2020-10-23 18:44:23,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:23" (1/1) ... [2020-10-23 18:44:23,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:23" (1/1) ... [2020-10-23 18:44:23,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:44:23,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:44:23,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:44:23,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:44:23,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:23" (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 [2020-10-23 18:44:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:44:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:44:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:44:23,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:44:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:44:23,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:44:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:44:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:44:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:44:23,606 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:44:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:44:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:44:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:44:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:44:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:44:23,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:44:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:44:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:44:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:44:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:44:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:44:23,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:44:23,901 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:44:23,901 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:44:23,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:23 BoogieIcfgContainer [2020-10-23 18:44:23,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:44:23,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:44:23,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:44:23,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:44:23,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:44:23" (1/3) ... [2020-10-23 18:44:23,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532634f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:23, skipping insertion in model container [2020-10-23 18:44:23,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:23" (2/3) ... [2020-10-23 18:44:23,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532634f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:23, skipping insertion in model container [2020-10-23 18:44:23,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:23" (3/3) ... [2020-10-23 18:44:23,916 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2020-10-23 18:44:23,932 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:44:23,938 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:44:23,955 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:44:23,987 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:44:23,987 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:44:23,987 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:44:23,987 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:44:23,987 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:44:23,988 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:44:23,988 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:44:23,988 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:44:24,008 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-23 18:44:24,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-23 18:44:24,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:24,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:24,023 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:24,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:24,037 INFO L82 PathProgramCache]: Analyzing trace with hash -875364728, now seen corresponding path program 1 times [2020-10-23 18:44:24,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:24,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271256450] [2020-10-23 18:44:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:24,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271256450] [2020-10-23 18:44:24,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:24,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-23 18:44:24,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511974380] [2020-10-23 18:44:24,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-23 18:44:24,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:24,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-23 18:44:24,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:44:24,368 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-10-23 18:44:24,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:24,492 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2020-10-23 18:44:24,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:44:24,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-23 18:44:24,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:24,502 INFO L225 Difference]: With dead ends: 39 [2020-10-23 18:44:24,503 INFO L226 Difference]: Without dead ends: 15 [2020-10-23 18:44:24,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-23 18:44:24,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-23 18:44:24,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-23 18:44:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-23 18:44:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-23 18:44:24,548 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 14 [2020-10-23 18:44:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:24,549 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-23 18:44:24,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-23 18:44:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-23 18:44:24,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-23 18:44:24,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:24,550 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:24,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:44:24,551 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:24,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:24,552 INFO L82 PathProgramCache]: Analyzing trace with hash -130412156, now seen corresponding path program 1 times [2020-10-23 18:44:24,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:24,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272292726] [2020-10-23 18:44:24,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:24,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:24,664 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272292726] [2020-10-23 18:44:24,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:24,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:44:24,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967030625] [2020-10-23 18:44:24,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:44:24,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:24,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:44:24,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:44:24,668 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-10-23 18:44:24,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:24,766 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-10-23 18:44:24,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 18:44:24,767 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-23 18:44:24,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:24,768 INFO L225 Difference]: With dead ends: 23 [2020-10-23 18:44:24,768 INFO L226 Difference]: Without dead ends: 16 [2020-10-23 18:44:24,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:44:24,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-23 18:44:24,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-23 18:44:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-23 18:44:24,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-23 18:44:24,778 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 14 [2020-10-23 18:44:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:24,779 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-23 18:44:24,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:44:24,779 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-23 18:44:24,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-23 18:44:24,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:24,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:24,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:44:24,780 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:24,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:24,781 INFO L82 PathProgramCache]: Analyzing trace with hash -958125858, now seen corresponding path program 1 times [2020-10-23 18:44:24,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:24,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438715279] [2020-10-23 18:44:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:25,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:25,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:25,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438715279] [2020-10-23 18:44:25,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057252906] [2020-10-23 18:44:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:25,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-23 18:44:25,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:25,503 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:44:25,518 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:44:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:25,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:25,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2020-10-23 18:44:25,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146184065] [2020-10-23 18:44:25,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-23 18:44:25,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:25,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-23 18:44:25,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-23 18:44:25,594 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 14 states. [2020-10-23 18:44:26,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:26,082 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-23 18:44:26,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:44:26,083 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2020-10-23 18:44:26,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:26,084 INFO L225 Difference]: With dead ends: 24 [2020-10-23 18:44:26,084 INFO L226 Difference]: Without dead ends: 17 [2020-10-23 18:44:26,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-23 18:44:26,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-23 18:44:26,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-23 18:44:26,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-23 18:44:26,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-10-23 18:44:26,093 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-10-23 18:44:26,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:26,094 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-10-23 18:44:26,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-23 18:44:26,094 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-10-23 18:44:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-23 18:44:26,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:26,095 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:26,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 18:44:26,311 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:26,312 INFO L82 PathProgramCache]: Analyzing trace with hash -847446844, now seen corresponding path program 2 times [2020-10-23 18:44:26,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:26,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857960878] [2020-10-23 18:44:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:26,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857960878] [2020-10-23 18:44:26,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876659125] [2020-10-23 18:44:26,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:26,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:44:26,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:44:26,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-23 18:44:26,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:44:26,808 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:44:26,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:26,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:44:26,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2020-10-23 18:44:26,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6294316] [2020-10-23 18:44:26,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-23 18:44:26,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:26,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-23 18:44:26,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-23 18:44:26,897 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 15 states. [2020-10-23 18:44:27,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:27,534 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2020-10-23 18:44:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-23 18:44:27,535 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-10-23 18:44:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:27,536 INFO L225 Difference]: With dead ends: 19 [2020-10-23 18:44:27,536 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:44:27,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2020-10-23 18:44:27,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:44:27,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:44:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:44:27,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:44:27,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-23 18:44:27,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:27,538 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:44:27,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-23 18:44:27,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:44:27,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:44:27,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:44:27,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:44:27,977 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 24 [2020-10-23 18:44:28,074 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-10-23 18:44:28,074 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-23 18:44:28,074 INFO L274 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-10-23 18:44:28,074 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-10-23 18:44:28,075 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-10-23 18:44:28,075 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:28,075 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-23 18:44:28,075 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:28,075 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:44:28,075 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:44:28,076 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:44:28,076 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:44:28,076 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-23 18:44:28,076 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:28,076 INFO L274 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:28,076 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-23 18:44:28,076 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 24 37) the Hoare annotation is: true [2020-10-23 18:44:28,076 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-10-23 18:44:28,077 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 34) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= main_~lo~0 main_~hi~0) (<= main_~hi~0 .cse0) (<= .cse0 main_~hi~0))) [2020-10-23 18:44:28,077 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 34) the Hoare annotation is: (or (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= main_~lo~0 main_~hi~0) (<= main_~hi~0 .cse0) (<= main_~hi~0 main_~lo~0) (<= .cse0 main_~hi~0))) (let ((.cse2 (+ main_~hi~0 1))) (let ((.cse1 (div .cse2 2))) (and (<= .cse1 1) (<= .cse1 (+ main_~mid~0 1)) (= main_~lo~0 1) (= (mod .cse2 2) 0) (< 0 .cse1))))) [2020-10-23 18:44:28,077 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 24 37) no Hoare annotation was computed. [2020-10-23 18:44:28,077 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 24 37) no Hoare annotation was computed. [2020-10-23 18:44:28,077 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-10-23 18:44:28,078 INFO L274 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-10-23 18:44:28,078 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-23 18:44:28,078 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-10-23 18:44:28,078 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-23 18:44:28,078 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-23 18:44:28,078 INFO L274 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-10-23 18:44:28,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:44:28 BoogieIcfgContainer [2020-10-23 18:44:28,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:44:28,099 INFO L168 Benchmark]: Toolchain (without parser) took 5020.95 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 137.0 MB in the beginning and 111.4 MB in the end (delta: 25.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:28,100 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 156.2 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:44:28,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.23 ms. Allocated memory is still 156.2 MB. Free memory was 136.2 MB in the beginning and 126.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:28,102 INFO L168 Benchmark]: Boogie Preprocessor took 82.53 ms. Allocated memory is still 156.2 MB. Free memory was 126.9 MB in the beginning and 140.7 MB in the end (delta: -13.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:28,103 INFO L168 Benchmark]: RCFGBuilder took 417.61 ms. Allocated memory is still 156.2 MB. Free memory was 140.7 MB in the beginning and 127.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:28,105 INFO L168 Benchmark]: TraceAbstraction took 4191.00 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 126.8 MB in the beginning and 111.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:28,109 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 156.2 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 316.23 ms. Allocated memory is still 156.2 MB. Free memory was 136.2 MB in the beginning and 126.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.53 ms. Allocated memory is still 156.2 MB. Free memory was 126.9 MB in the beginning and 140.7 MB in the end (delta: -13.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. * RCFGBuilder took 417.61 ms. Allocated memory is still 156.2 MB. Free memory was 140.7 MB in the beginning and 127.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4191.00 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 126.8 MB in the beginning and 111.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 48.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 30]: Loop Invariant Derived loop invariant: (lo <= hi && hi <= 2 * mid + lo) && 2 * mid + lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 47 SDslu, 84 SDs, 0 SdLazy, 140 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 20 PreInvPairs, 26 NumberOfFragments, 108 HoareAnnotationTreeSize, 20 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 377 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 6048 SizeOfPredicates, 6 NumberOfNonLiveVariables, 187 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...